async_openai_wasm/types/chat.rs
1use std::collections::HashMap;
2
3use derive_builder::Builder;
4use serde::{Deserialize, Serialize};
5
6use crate::client::OpenAIEventStream;
7use crate::error::OpenAIError;
8
9#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
10#[serde(untagged)]
11pub enum Prompt {
12 String(String),
13 StringArray(Vec<String>),
14 // Minimum value is 0, maximum value is 50256 (inclusive).
15 IntegerArray(Vec<u16>),
16 ArrayOfIntegerArray(Vec<Vec<u16>>),
17}
18
19#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
20#[serde(untagged)]
21pub enum Stop {
22 String(String), // nullable: true
23 StringArray(Vec<String>), // minItems: 1; maxItems: 4
24}
25
26#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
27pub struct Logprobs {
28 pub tokens: Vec<String>,
29 pub token_logprobs: Vec<Option<f32>>, // Option is to account for null value in the list
30 pub top_logprobs: Vec<serde_json::Value>,
31 pub text_offset: Vec<u32>,
32}
33
34#[derive(Debug, Serialize, Deserialize, Clone, Copy, PartialEq)]
35#[serde(rename_all = "snake_case")]
36pub enum CompletionFinishReason {
37 Stop,
38 Length,
39 ContentFilter,
40}
41
42#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
43pub struct Choice {
44 pub text: String,
45 pub index: u32,
46 pub logprobs: Option<Logprobs>,
47 pub finish_reason: Option<CompletionFinishReason>,
48}
49
50#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
51pub enum ChatCompletionFunctionCall {
52 /// The model does not call a function, and responds to the end-user.
53 #[serde(rename = "none")]
54 None,
55 /// The model can pick between an end-user or calling a function.
56 #[serde(rename = "auto")]
57 Auto,
58
59 // In spec this is ChatCompletionFunctionCallOption
60 // based on feedback from @m1guelpf in https://github.com/64bit/async-openai/pull/118
61 // it is diverged from the spec
62 /// Forces the model to call the specified function.
63 #[serde(untagged)]
64 Function { name: String },
65}
66
67#[derive(Debug, Serialize, Deserialize, Clone, Copy, Default, PartialEq)]
68#[serde(rename_all = "lowercase")]
69pub enum Role {
70 System,
71 #[default]
72 User,
73 Assistant,
74 Tool,
75 Function,
76}
77
78/// The name and arguments of a function that should be called, as generated by the model.
79#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
80pub struct FunctionCall {
81 /// The name of the function to call.
82 pub name: String,
83 /// The arguments to call the function with, as generated by the model in JSON format. Note that the model does not always generate valid JSON, and may hallucinate parameters not defined by your function schema. Validate the arguments in your code before calling your function.
84 pub arguments: String,
85}
86
87/// Usage statistics for the completion request.
88#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
89pub struct CompletionUsage {
90 /// Number of tokens in the prompt.
91 pub prompt_tokens: u32,
92 /// Number of tokens in the generated completion.
93 pub completion_tokens: u32,
94 /// Total number of tokens used in the request (prompt + completion).
95 pub total_tokens: u32,
96 /// Breakdown of tokens used in the prompt.
97 pub prompt_tokens_details: Option<PromptTokensDetails>,
98 /// Breakdown of tokens used in a completion.
99 pub completion_tokens_details: Option<CompletionTokensDetails>,
100}
101
102/// Breakdown of tokens used in a completion.
103#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
104pub struct PromptTokensDetails {
105 /// Audio input tokens present in the prompt.
106 pub audio_tokens: Option<u32>,
107 /// Cached tokens present in the prompt.
108 pub cached_tokens: Option<u32>,
109}
110
111/// Breakdown of tokens used in a completion.
112#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
113pub struct CompletionTokensDetails {
114 pub accepted_prediction_tokens: Option<u32>,
115 /// Audio input tokens generated by the model.
116 pub audio_tokens: Option<u32>,
117 /// Tokens generated by the model for reasoning.
118 pub reasoning_tokens: Option<u32>,
119 /// When using Predicted Outputs, the number of tokens in the
120 /// prediction that did not appear in the completion. However, like
121 /// reasoning tokens, these tokens are still counted in the total
122 /// completion tokens for purposes of billing, output, and context
123 /// window limits.
124 pub rejected_prediction_tokens: Option<u32>,
125}
126
127#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
128#[builder(name = "ChatCompletionRequestDeveloperMessageArgs")]
129#[builder(pattern = "mutable")]
130#[builder(setter(into, strip_option), default)]
131#[builder(derive(Debug))]
132#[builder(build_fn(error = "OpenAIError"))]
133pub struct ChatCompletionRequestDeveloperMessage {
134 /// The contents of the developer message.
135 pub content: ChatCompletionRequestDeveloperMessageContent,
136
137 /// An optional name for the participant. Provides the model information to differentiate between participants of the same role.
138 #[serde(skip_serializing_if = "Option::is_none")]
139 pub name: Option<String>,
140}
141
142#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
143#[serde(untagged)]
144pub enum ChatCompletionRequestDeveloperMessageContent {
145 Text(String),
146 Array(Vec<ChatCompletionRequestMessageContentPartText>),
147}
148
149#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
150#[builder(name = "ChatCompletionRequestSystemMessageArgs")]
151#[builder(pattern = "mutable")]
152#[builder(setter(into, strip_option), default)]
153#[builder(derive(Debug))]
154#[builder(build_fn(error = "OpenAIError"))]
155pub struct ChatCompletionRequestSystemMessage {
156 /// The contents of the system message.
157 pub content: ChatCompletionRequestSystemMessageContent,
158 /// An optional name for the participant. Provides the model information to differentiate between participants of the same role.
159 #[serde(skip_serializing_if = "Option::is_none")]
160 pub name: Option<String>,
161}
162
163#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
164#[builder(name = "ChatCompletionRequestMessageContentPartTextArgs")]
165#[builder(pattern = "mutable")]
166#[builder(setter(into, strip_option), default)]
167#[builder(derive(Debug))]
168#[builder(build_fn(error = "OpenAIError"))]
169pub struct ChatCompletionRequestMessageContentPartText {
170 pub text: String,
171}
172
173#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
174pub struct ChatCompletionRequestMessageContentPartRefusal {
175 /// The refusal message generated by the model.
176 pub refusal: String,
177}
178
179#[derive(Debug, Serialize, Deserialize, Default, Clone, PartialEq)]
180#[serde(rename_all = "lowercase")]
181pub enum ImageDetail {
182 #[default]
183 Auto,
184 Low,
185 High,
186}
187
188#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
189#[builder(name = "ImageUrlArgs")]
190#[builder(pattern = "mutable")]
191#[builder(setter(into, strip_option), default)]
192#[builder(derive(Debug))]
193#[builder(build_fn(error = "OpenAIError"))]
194pub struct ImageUrl {
195 /// Either a URL of the image or the base64 encoded image data.
196 pub url: String,
197 /// Specifies the detail level of the image. Learn more in the [Vision guide](https://platform.openai.com/docs/guides/vision/low-or-high-fidelity-image-understanding).
198 pub detail: Option<ImageDetail>,
199}
200
201#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
202#[builder(name = "ChatCompletionRequestMessageContentPartImageArgs")]
203#[builder(pattern = "mutable")]
204#[builder(setter(into, strip_option), default)]
205#[builder(derive(Debug))]
206#[builder(build_fn(error = "OpenAIError"))]
207pub struct ChatCompletionRequestMessageContentPartImage {
208 pub image_url: ImageUrl,
209}
210
211#[derive(Debug, Serialize, Deserialize, Default, Clone, PartialEq)]
212#[serde(rename_all = "lowercase")]
213pub enum InputAudioFormat {
214 Wav,
215 #[default]
216 Mp3,
217}
218
219#[derive(Debug, Serialize, Deserialize, Default, Clone, PartialEq)]
220pub struct InputAudio {
221 /// Base64 encoded audio data.
222 pub data: String,
223 /// The format of the encoded audio data. Currently supports "wav" and "mp3".
224 pub format: InputAudioFormat,
225}
226
227/// Learn about [audio inputs](https://platform.openai.com/docs/guides/audio).
228#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
229#[builder(name = "ChatCompletionRequestMessageContentPartAudioArgs")]
230#[builder(pattern = "mutable")]
231#[builder(setter(into, strip_option), default)]
232#[builder(derive(Debug))]
233#[builder(build_fn(error = "OpenAIError"))]
234pub struct ChatCompletionRequestMessageContentPartAudio {
235 pub input_audio: InputAudio,
236}
237
238#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
239#[serde(tag = "type")]
240#[serde(rename_all = "snake_case")]
241pub enum ChatCompletionRequestUserMessageContentPart {
242 Text(ChatCompletionRequestMessageContentPartText),
243 ImageUrl(ChatCompletionRequestMessageContentPartImage),
244 InputAudio(ChatCompletionRequestMessageContentPartAudio),
245}
246
247#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
248#[serde(tag = "type")]
249#[serde(rename_all = "snake_case")]
250pub enum ChatCompletionRequestSystemMessageContentPart {
251 Text(ChatCompletionRequestMessageContentPartText),
252}
253
254#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
255#[serde(tag = "type")]
256#[serde(rename_all = "snake_case")]
257pub enum ChatCompletionRequestAssistantMessageContentPart {
258 Text(ChatCompletionRequestMessageContentPartText),
259 Refusal(ChatCompletionRequestMessageContentPartRefusal),
260}
261
262#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
263#[serde(tag = "type")]
264#[serde(rename_all = "snake_case")]
265pub enum ChatCompletionRequestToolMessageContentPart {
266 Text(ChatCompletionRequestMessageContentPartText),
267}
268
269#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
270#[serde(untagged)]
271pub enum ChatCompletionRequestSystemMessageContent {
272 /// The text contents of the system message.
273 Text(String),
274 /// An array of content parts with a defined type. For system messages, only type `text` is supported.
275 Array(Vec<ChatCompletionRequestSystemMessageContentPart>),
276}
277
278#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
279#[serde(untagged)]
280pub enum ChatCompletionRequestUserMessageContent {
281 /// The text contents of the message.
282 Text(String),
283 /// An array of content parts with a defined type. Supported options differ based on the [model](https://platform.openai.com/docs/models) being used to generate the response. Can contain text, image, or audio inputs.
284 Array(Vec<ChatCompletionRequestUserMessageContentPart>),
285}
286
287#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
288#[serde(untagged)]
289pub enum ChatCompletionRequestAssistantMessageContent {
290 /// The text contents of the message.
291 Text(String),
292 /// An array of content parts with a defined type. Can be one or more of type `text`, or exactly one of type `refusal`.
293 Array(Vec<ChatCompletionRequestAssistantMessageContentPart>),
294}
295
296#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
297#[serde(untagged)]
298pub enum ChatCompletionRequestToolMessageContent {
299 /// The text contents of the tool message.
300 Text(String),
301 /// An array of content parts with a defined type. For tool messages, only type `text` is supported.
302 Array(Vec<ChatCompletionRequestToolMessageContentPart>),
303}
304
305#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
306#[builder(name = "ChatCompletionRequestUserMessageArgs")]
307#[builder(pattern = "mutable")]
308#[builder(setter(into, strip_option), default)]
309#[builder(derive(Debug))]
310#[builder(build_fn(error = "OpenAIError"))]
311pub struct ChatCompletionRequestUserMessage {
312 /// The contents of the user message.
313 pub content: ChatCompletionRequestUserMessageContent,
314 /// An optional name for the participant. Provides the model information to differentiate between participants of the same role.
315 #[serde(skip_serializing_if = "Option::is_none")]
316 pub name: Option<String>,
317}
318
319#[derive(Debug, Serialize, Deserialize, Default, Clone, PartialEq)]
320pub struct ChatCompletionRequestAssistantMessageAudio {
321 /// Unique identifier for a previous audio response from the model.
322 pub id: String,
323}
324
325#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
326#[builder(name = "ChatCompletionRequestAssistantMessageArgs")]
327#[builder(pattern = "mutable")]
328#[builder(setter(into, strip_option), default)]
329#[builder(derive(Debug))]
330#[builder(build_fn(error = "OpenAIError"))]
331pub struct ChatCompletionRequestAssistantMessage {
332 /// The contents of the assistant message. Required unless `tool_calls` or `function_call` is specified.
333 #[serde(skip_serializing_if = "Option::is_none")]
334 pub content: Option<ChatCompletionRequestAssistantMessageContent>,
335 /// The refusal message by the assistant.
336 #[serde(skip_serializing_if = "Option::is_none")]
337 pub refusal: Option<String>,
338 /// An optional name for the participant. Provides the model information to differentiate between participants of the same role.
339 #[serde(skip_serializing_if = "Option::is_none")]
340 pub name: Option<String>,
341 /// Data about a previous audio response from the model.
342 /// [Learn more](https://platform.openai.com/docs/guides/audio).
343 #[serde(skip_serializing_if = "Option::is_none")]
344 pub audio: Option<ChatCompletionRequestAssistantMessageAudio>,
345 #[serde(skip_serializing_if = "Option::is_none")]
346 pub tool_calls: Option<Vec<ChatCompletionMessageToolCall>>,
347 /// Deprecated and replaced by `tool_calls`. The name and arguments of a function that should be called, as generated by the model.
348 #[deprecated]
349 #[serde(skip_serializing_if = "Option::is_none")]
350 pub function_call: Option<FunctionCall>,
351}
352
353/// Tool message
354#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
355#[builder(name = "ChatCompletionRequestToolMessageArgs")]
356#[builder(pattern = "mutable")]
357#[builder(setter(into, strip_option), default)]
358#[builder(derive(Debug))]
359#[builder(build_fn(error = "OpenAIError"))]
360pub struct ChatCompletionRequestToolMessage {
361 /// The contents of the tool message.
362 pub content: ChatCompletionRequestToolMessageContent,
363 pub tool_call_id: String,
364}
365
366#[derive(Debug, Serialize, Deserialize, Default, Clone, Builder, PartialEq)]
367#[builder(name = "ChatCompletionRequestFunctionMessageArgs")]
368#[builder(pattern = "mutable")]
369#[builder(setter(into, strip_option), default)]
370#[builder(derive(Debug))]
371#[builder(build_fn(error = "OpenAIError"))]
372pub struct ChatCompletionRequestFunctionMessage {
373 /// The return value from the function call, to return to the model.
374 pub content: Option<String>,
375 /// The name of the function to call.
376 pub name: String,
377}
378
379#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
380#[serde(tag = "role")]
381#[serde(rename_all = "lowercase")]
382pub enum ChatCompletionRequestMessage {
383 Developer(ChatCompletionRequestDeveloperMessage),
384 System(ChatCompletionRequestSystemMessage),
385 User(ChatCompletionRequestUserMessage),
386 Assistant(ChatCompletionRequestAssistantMessage),
387 Tool(ChatCompletionRequestToolMessage),
388 Function(ChatCompletionRequestFunctionMessage),
389}
390
391#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
392pub struct ChatCompletionMessageToolCall {
393 /// The ID of the tool call.
394 pub id: String,
395 /// The type of the tool. Currently, only `function` is supported.
396 pub r#type: ChatCompletionToolType,
397 /// The function that the model called.
398 pub function: FunctionCall,
399}
400
401#[derive(Debug, Serialize, Deserialize, Default, Clone, PartialEq)]
402pub struct ChatCompletionResponseMessageAudio {
403 /// Unique identifier for this audio response.
404 pub id: String,
405 /// The Unix timestamp (in seconds) for when this audio response will no longer be accessible on the server for use in multi-turn conversations.
406 pub expires_at: u32,
407 /// Base64 encoded audio bytes generated by the model, in the format specified in the request.
408 pub data: String,
409 /// Transcript of the audio generated by the model.
410 pub transcript: String,
411}
412
413/// A chat completion message generated by the model.
414#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
415pub struct ChatCompletionResponseMessage {
416 /// The contents of the message.
417 pub content: Option<String>,
418 /// The refusal message generated by the model.
419 pub refusal: Option<String>,
420 /// The tool calls generated by the model, such as function calls.
421 pub tool_calls: Option<Vec<ChatCompletionMessageToolCall>>,
422
423 /// The role of the author of this message.
424 pub role: Role,
425
426 /// Deprecated and replaced by `tool_calls`.
427 /// The name and arguments of a function that should be called, as generated by the model.
428 #[deprecated]
429 pub function_call: Option<FunctionCall>,
430
431 /// If the audio output modality is requested, this object contains data about the audio response from the model. [Learn more](https://platform.openai.com/docs/guides/audio).
432 pub audio: Option<ChatCompletionResponseMessageAudio>,
433
434 /// Catching anything else that a provider wants to provide, for example, a `reasoning` field
435 #[serde(skip_serializing_if = "Option::is_none")]
436 #[serde(flatten)]
437 pub return_catchall: Option<serde_json::Value>,
438}
439
440#[derive(Clone, Serialize, Default, Debug, Deserialize, Builder, PartialEq)]
441#[builder(name = "ChatCompletionFunctionsArgs")]
442#[builder(pattern = "mutable")]
443#[builder(setter(into, strip_option), default)]
444#[builder(derive(Debug))]
445#[builder(build_fn(error = "OpenAIError"))]
446#[deprecated]
447pub struct ChatCompletionFunctions {
448 /// The name of the function to be called. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64.
449 pub name: String,
450 /// A description of what the function does, used by the model to choose when and how to call the function.
451 #[serde(skip_serializing_if = "Option::is_none")]
452 pub description: Option<String>,
453 /// The parameters the functions accepts, described as a JSON Schema object. See the [guide](https://platform.openai.com/docs/guides/text-generation/function-calling) for examples, and the [JSON Schema reference](https://json-schema.org/understanding-json-schema/) for documentation about the format.
454 ///
455 /// Omitting `parameters` defines a function with an empty parameter list.
456 pub parameters: serde_json::Value,
457}
458
459#[derive(Clone, Serialize, Default, Debug, Deserialize, Builder, PartialEq)]
460#[builder(name = "FunctionObjectArgs")]
461#[builder(pattern = "mutable")]
462#[builder(setter(into, strip_option), default)]
463#[builder(derive(Debug))]
464#[builder(build_fn(error = "OpenAIError"))]
465pub struct FunctionObject {
466 /// The name of the function to be called. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64.
467 pub name: String,
468 /// A description of what the function does, used by the model to choose when and how to call the function.
469 #[serde(skip_serializing_if = "Option::is_none")]
470 pub description: Option<String>,
471 /// The parameters the functions accepts, described as a JSON Schema object. See the [guide](https://platform.openai.com/docs/guides/text-generation/function-calling) for examples, and the [JSON Schema reference](https://json-schema.org/understanding-json-schema/) for documentation about the format.
472 ///
473 /// Omitting `parameters` defines a function with an empty parameter list.
474 #[serde(skip_serializing_if = "Option::is_none")]
475 pub parameters: Option<serde_json::Value>,
476
477 /// Whether to enable strict schema adherence when generating the function call. If set to true, the model will follow the exact schema defined in the `parameters` field. Only a subset of JSON Schema is supported when `strict` is `true`. Learn more about Structured Outputs in the [function calling guide](https://platform.openai.com/docs/guides/function-calling).
478 #[serde(skip_serializing_if = "Option::is_none")]
479 pub strict: Option<bool>,
480}
481
482#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
483#[serde(tag = "type", rename_all = "snake_case")]
484pub enum ResponseFormat {
485 /// The type of response format being defined: `text`
486 Text,
487 /// The type of response format being defined: `json_object`
488 JsonObject,
489 /// The type of response format being defined: `json_schema`
490 JsonSchema {
491 json_schema: ResponseFormatJsonSchema,
492 },
493}
494
495#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
496pub struct ResponseFormatJsonSchema {
497 /// A description of what the response format is for, used by the model to determine how to respond in the format.
498 #[serde(skip_serializing_if = "Option::is_none")]
499 pub description: Option<String>,
500 /// The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64.
501 pub name: String,
502 /// The schema for the response format, described as a JSON Schema object.
503 #[serde(skip_serializing_if = "Option::is_none")]
504 pub schema: Option<serde_json::Value>,
505 /// Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](https://platform.openai.com/docs/guides/structured-outputs).
506 #[serde(skip_serializing_if = "Option::is_none")]
507 pub strict: Option<bool>,
508}
509
510#[derive(Clone, Serialize, Default, Debug, Deserialize, PartialEq)]
511#[serde(rename_all = "lowercase")]
512pub enum ChatCompletionToolType {
513 #[default]
514 Function,
515}
516
517#[derive(Clone, Serialize, Default, Debug, Builder, Deserialize, PartialEq)]
518#[builder(name = "ChatCompletionToolArgs")]
519#[builder(pattern = "mutable")]
520#[builder(setter(into, strip_option), default)]
521#[builder(derive(Debug))]
522#[builder(build_fn(error = "OpenAIError"))]
523pub struct ChatCompletionTool {
524 #[builder(default = "ChatCompletionToolType::Function")]
525 pub r#type: ChatCompletionToolType,
526 pub function: FunctionObject,
527}
528
529#[derive(Clone, Serialize, Default, Debug, Deserialize, PartialEq)]
530pub struct FunctionName {
531 /// The name of the function to call.
532 pub name: String,
533}
534
535/// Specifies a tool the model should use. Use to force the model to call a specific function.
536#[derive(Clone, Serialize, Default, Debug, Deserialize, PartialEq)]
537pub struct ChatCompletionNamedToolChoice {
538 /// The type of the tool. Currently, only `function` is supported.
539 pub r#type: ChatCompletionToolType,
540
541 pub function: FunctionName,
542}
543
544/// Controls which (if any) tool is called by the model.
545/// `none` means the model will not call any tool and instead generates a message.
546/// `auto` means the model can pick between generating a message or calling one or more tools.
547/// `required` means the model must call one or more tools.
548/// Specifying a particular tool via `{"type": "function", "function": {"name": "my_function"}}` forces the model to call that tool.
549///
550/// `none` is the default when no tools are present. `auto` is the default if tools are present.present.
551#[derive(Clone, Serialize, Default, Debug, Deserialize, PartialEq)]
552#[serde(rename_all = "lowercase")]
553pub enum ChatCompletionToolChoiceOption {
554 #[default]
555 None,
556 Auto,
557 Required,
558 #[serde(untagged)]
559 Named(ChatCompletionNamedToolChoice),
560}
561
562#[derive(Clone, Serialize, Debug, Deserialize, PartialEq, Default)]
563#[serde(rename_all = "lowercase")]
564/// The amount of context window space to use for the search.
565pub enum WebSearchContextSize {
566 Low,
567 #[default]
568 Medium,
569 High,
570}
571
572#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
573#[serde(rename_all = "lowercase")]
574pub enum WebSearchUserLocationType {
575 Approximate,
576}
577
578/// Approximate location parameters for the search.
579#[derive(Clone, Serialize, Debug, Default, Deserialize, PartialEq)]
580pub struct WebSearchLocation {
581 /// The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`.
582 pub country: Option<String>,
583 /// Free text input for the region of the user, e.g. `California`.
584 pub region: Option<String>,
585 /// Free text input for the city of the user, e.g. `San Francisco`.
586 pub city: Option<String>,
587 /// The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
588 pub timezone: Option<String>,
589}
590
591#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
592pub struct WebSearchUserLocation {
593 // The type of location approximation. Always `approximate`.
594 pub r#type: WebSearchUserLocationType,
595
596 pub approximate: WebSearchLocation,
597}
598
599/// Options for the web search tool.
600#[derive(Clone, Serialize, Debug, Default, Deserialize, PartialEq)]
601pub struct WebSearchOptions {
602 /// High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default.
603 pub search_context_size: Option<WebSearchContextSize>,
604
605 /// Approximate location parameters for the search.
606 pub user_location: Option<WebSearchUserLocation>,
607}
608
609#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
610#[serde(rename_all = "lowercase")]
611pub enum ServiceTier {
612 Auto,
613 Default,
614}
615
616#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
617#[serde(rename_all = "lowercase")]
618pub enum ServiceTierResponse {
619 Scale,
620 Default,
621}
622
623#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
624#[serde(rename_all = "lowercase")]
625pub enum ReasoningEffort {
626 Low,
627 Medium,
628 High,
629}
630
631/// Output types that you would like the model to generate for this request.
632///
633/// Most models are capable of generating text, which is the default: `["text"]`
634///
635/// The `gpt-4o-audio-preview` model can also be used to [generate
636/// audio](https://platform.openai.com/docs/guides/audio). To request that this model generate both text and audio responses, you can use: `["text", "audio"]`
637#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
638#[serde(rename_all = "lowercase")]
639pub enum ChatCompletionModalities {
640 Text,
641 Audio,
642}
643
644/// The content that should be matched when generating a model response. If generated tokens would match this content, the entire model response can be returned much more quickly.
645#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
646#[serde(untagged)]
647pub enum PredictionContentContent {
648 /// The content used for a Predicted Output. This is often the text of a file you are regenerating with minor changes.
649 Text(String),
650 /// An array of content parts with a defined type. Supported options differ based on the [model](https://platform.openai.com/docs/models) being used to generate the response. Can contain text inputs.
651 Array(Vec<ChatCompletionRequestMessageContentPartText>),
652}
653
654/// Static predicted output content, such as the content of a text file that is being regenerated.
655#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
656#[serde(tag = "type", rename_all = "lowercase", content = "content")]
657pub enum PredictionContent {
658 /// The type of the predicted content you want to provide. This type is
659 /// currently always `content`.
660 Content(PredictionContentContent),
661}
662
663#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
664#[serde(rename_all = "lowercase")]
665pub enum ChatCompletionAudioVoice {
666 Alloy,
667 Ash,
668 Ballad,
669 Coral,
670 Echo,
671 Sage,
672 Shimmer,
673 Verse,
674}
675
676#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
677#[serde(rename_all = "lowercase")]
678pub enum ChatCompletionAudioFormat {
679 Wav,
680 Mp3,
681 Flac,
682 Opus,
683 Pcm16,
684}
685
686#[derive(Clone, Serialize, Debug, Deserialize, PartialEq)]
687pub struct ChatCompletionAudio {
688 /// The voice the model uses to respond. Supported voices are `ash`, `ballad`, `coral`, `sage`, and `verse` (also supported but not recommended are `alloy`, `echo`, and `shimmer`; these voices are less expressive).
689 pub voice: ChatCompletionAudioVoice,
690 /// Specifies the output audio format. Must be one of `wav`, `mp3`, `flac`, `opus`, or `pcm16`.
691 pub format: ChatCompletionAudioFormat,
692}
693
694#[derive(Clone, Serialize, Default, Debug, Builder, Deserialize, PartialEq)]
695#[builder(name = "CreateChatCompletionRequestArgs")]
696#[builder(pattern = "mutable")]
697#[builder(setter(into, strip_option), default)]
698#[builder(derive(Debug))]
699#[builder(build_fn(error = "OpenAIError"))]
700pub struct CreateChatCompletionRequest {
701 /// A list of messages comprising the conversation so far. Depending on the [model](https://platform.openai.com/docs/models) you use, different message types (modalities) are supported, like [text](https://platform.openai.com/docs/guides/text-generation), [images](https://platform.openai.com/docs/guides/vision), and [audio](https://platform.openai.com/docs/guides/audio).
702 pub messages: Vec<ChatCompletionRequestMessage>, // min: 1
703
704 /// ID of the model to use.
705 /// See the [model endpoint compatibility](https://platform.openai.com/docs/models#model-endpoint-compatibility) table for details on which models work with the Chat API.
706 pub model: String,
707
708 /// Whether or not to store the output of this chat completion request
709 ///
710 /// for use in our [model distillation](https://platform.openai.com/docs/guides/distillation) or [evals](https://platform.openai.com/docs/guides/evals) products.
711 #[serde(skip_serializing_if = "Option::is_none")]
712 pub store: Option<bool>, // nullable: true, default: false
713
714 /// **o1 models only**
715 ///
716 /// Constrains effort on reasoning for
717 /// [reasoning models](https://platform.openai.com/docs/guides/reasoning).
718 ///
719 /// Currently supported values are `low`, `medium`, and `high`. Reducing
720 ///
721 /// reasoning effort can result in faster responses and fewer tokens
722 /// used on reasoning in a response.
723 #[serde(skip_serializing_if = "Option::is_none")]
724 pub reasoning_effort: Option<ReasoningEffort>,
725
726 /// Developer-defined tags and values used for filtering completions in the [dashboard](https://platform.openai.com/chat-completions).
727 #[serde(skip_serializing_if = "Option::is_none")]
728 pub metadata: Option<serde_json::Value>, // nullable: true
729
730 /// Number between -2.0 and 2.0. Positive values penalize new tokens based on their existing frequency in the text so far, decreasing the model's likelihood to repeat the same line verbatim.
731 #[serde(skip_serializing_if = "Option::is_none")]
732 pub frequency_penalty: Option<f32>, // min: -2.0, max: 2.0, default: 0
733
734 /// Modify the likelihood of specified tokens appearing in the completion.
735 ///
736 /// Accepts a json object that maps tokens (specified by their token ID in the tokenizer) to an associated bias value from -100 to 100.
737 /// Mathematically, the bias is added to the logits generated by the model prior to sampling.
738 /// The exact effect will vary per model, but values between -1 and 1 should decrease or increase likelihood of selection;
739 /// values like -100 or 100 should result in a ban or exclusive selection of the relevant token.
740 #[serde(skip_serializing_if = "Option::is_none")]
741 pub logit_bias: Option<HashMap<String, serde_json::Value>>, // default: null
742
743 /// Whether to return log probabilities of the output tokens or not. If true, returns the log probabilities of each output token returned in the `content` of `message`.
744 #[serde(skip_serializing_if = "Option::is_none")]
745 pub logprobs: Option<bool>,
746
747 /// An integer between 0 and 20 specifying the number of most likely tokens to return at each token position, each with an associated log probability. `logprobs` must be set to `true` if this parameter is used.
748 #[serde(skip_serializing_if = "Option::is_none")]
749 pub top_logprobs: Option<u8>,
750
751 /// The maximum number of [tokens](https://platform.openai.com/tokenizer) that can be generated in the chat completion.
752 ///
753 /// This value can be used to control [costs](https://openai.com/api/pricing/) for text generated via API.
754 /// This value is now deprecated in favor of `max_completion_tokens`, and is
755 /// not compatible with [o1 series models](https://platform.openai.com/docs/guides/reasoning).
756 #[deprecated]
757 #[serde(skip_serializing_if = "Option::is_none")]
758 pub max_tokens: Option<u32>,
759
760 /// An upper bound for the number of tokens that can be generated for a completion, including visible output tokens and [reasoning tokens](https://platform.openai.com/docs/guides/reasoning).
761 #[serde(skip_serializing_if = "Option::is_none")]
762 pub max_completion_tokens: Option<u32>,
763
764 /// How many chat completion choices to generate for each input message. Note that you will be charged based on the number of generated tokens across all of the choices. Keep `n` as `1` to minimize costs.
765 #[serde(skip_serializing_if = "Option::is_none")]
766 pub n: Option<u8>, // min:1, max: 128, default: 1
767
768 #[serde(skip_serializing_if = "Option::is_none")]
769 pub modalities: Option<Vec<ChatCompletionModalities>>,
770
771 /// Configuration for a [Predicted Output](https://platform.openai.com/docs/guides/predicted-outputs),which can greatly improve response times when large parts of the model response are known ahead of time. This is most common when you are regenerating a file with only minor changes to most of the content.
772 #[serde(skip_serializing_if = "Option::is_none")]
773 pub prediction: Option<PredictionContent>,
774
775 /// Parameters for audio output. Required when audio output is requested with `modalities: ["audio"]`. [Learn more](https://platform.openai.com/docs/guides/audio).
776 #[serde(skip_serializing_if = "Option::is_none")]
777 pub audio: Option<ChatCompletionAudio>,
778
779 /// Number between -2.0 and 2.0. Positive values penalize new tokens based on whether they appear in the text so far, increasing the model's likelihood to talk about new topics.
780 #[serde(skip_serializing_if = "Option::is_none")]
781 pub presence_penalty: Option<f32>, // min: -2.0, max: 2.0, default 0
782
783 /// An object specifying the format that the model must output. Compatible with [GPT-4o](https://platform.openai.com/docs/models/gpt-4o), [GPT-4o mini](https://platform.openai.com/docs/models/gpt-4o-mini), [GPT-4 Turbo](https://platform.openai.com/docs/models/gpt-4-and-gpt-4-turbo) and all GPT-3.5 Turbo models newer than `gpt-3.5-turbo-1106`.
784 ///
785 /// Setting to `{ "type": "json_schema", "json_schema": {...} }` enables Structured Outputs which guarantees the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](https://platform.openai.com/docs/guides/structured-outputs).
786 ///
787 /// Setting to `{ "type": "json_object" }` enables JSON mode, which guarantees the message the model generates is valid JSON.
788 ///
789 /// **Important:** when using JSON mode, you **must** also instruct the model to produce JSON yourself via a system or user message. Without this, the model may generate an unending stream of whitespace until the generation reaches the token limit, resulting in a long-running and seemingly "stuck" request. Also note that the message content may be partially cut off if `finish_reason="length"`, which indicates the generation exceeded `max_tokens` or the conversation exceeded the max context length.
790 #[serde(skip_serializing_if = "Option::is_none")]
791 pub response_format: Option<ResponseFormat>,
792
793 /// This feature is in Beta.
794 /// If specified, our system will make a best effort to sample deterministically, such that repeated requests
795 /// with the same `seed` and parameters should return the same result.
796 /// Determinism is not guaranteed, and you should refer to the `system_fingerprint` response parameter to monitor changes in the backend.
797 #[serde(skip_serializing_if = "Option::is_none")]
798 pub seed: Option<i64>,
799
800 /// Specifies the latency tier to use for processing the request. This parameter is relevant for customers subscribed to the scale tier service:
801 /// - If set to 'auto', the system will utilize scale tier credits until they are exhausted.
802 /// - If set to 'default', the request will be processed using the default service tier with a lower uptime SLA and no latency guarentee.
803 /// - When not set, the default behavior is 'auto'.
804 ///
805 /// When this parameter is set, the response body will include the `service_tier` utilized.
806 #[serde(skip_serializing_if = "Option::is_none")]
807 pub service_tier: Option<ServiceTier>,
808
809 /// Up to 4 sequences where the API will stop generating further tokens.
810 #[serde(skip_serializing_if = "Option::is_none")]
811 pub stop: Option<Stop>,
812
813 /// If set, partial message deltas will be sent, like in ChatGPT.
814 /// Tokens will be sent as data-only [server-sent events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events#Event_stream_format)
815 /// as they become available, with the stream terminated by a `data: [DONE]` message. [Example Python code](https://cookbook.openai.com/examples/how_to_stream_completions).
816 #[serde(skip_serializing_if = "Option::is_none")]
817 pub stream: Option<bool>,
818
819 #[serde(skip_serializing_if = "Option::is_none")]
820 pub stream_options: Option<ChatCompletionStreamOptions>,
821
822 /// What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random,
823 /// while lower values like 0.2 will make it more focused and deterministic.
824 ///
825 /// We generally recommend altering this or `top_p` but not both.
826 #[serde(skip_serializing_if = "Option::is_none")]
827 pub temperature: Option<f32>, // min: 0, max: 2, default: 1,
828
829 /// An alternative to sampling with temperature, called nucleus sampling,
830 /// where the model considers the results of the tokens with top_p probability mass.
831 /// So 0.1 means only the tokens comprising the top 10% probability mass are considered.
832 ///
833 /// We generally recommend altering this or `temperature` but not both.
834 #[serde(skip_serializing_if = "Option::is_none")]
835 pub top_p: Option<f32>, // min: 0, max: 1, default: 1
836
837 /// A list of tools the model may call. Currently, only functions are supported as a tool.
838 /// Use this to provide a list of functions the model may generate JSON inputs for. A max of 128 functions are supported.
839 #[serde(skip_serializing_if = "Option::is_none")]
840 pub tools: Option<Vec<ChatCompletionTool>>,
841
842 #[serde(skip_serializing_if = "Option::is_none")]
843 pub tool_choice: Option<ChatCompletionToolChoiceOption>,
844
845 /// Whether to enable [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling) during tool use.
846 #[serde(skip_serializing_if = "Option::is_none")]
847 pub parallel_tool_calls: Option<bool>,
848
849 /// A unique identifier representing your end-user, which can help OpenAI to monitor and detect abuse. [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#end-user-ids).
850 #[serde(skip_serializing_if = "Option::is_none")]
851 pub user: Option<String>,
852
853 /// This tool searches the web for relevant results to use in a response.
854 /// Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search?api-mode=chat).
855 pub web_search_options: Option<WebSearchOptions>,
856
857 /// Deprecated in favor of `tool_choice`.
858 ///
859 /// Controls which (if any) function is called by the model.
860 /// `none` means the model will not call a function and instead generates a message.
861 /// `auto` means the model can pick between generating a message or calling a function.
862 /// Specifying a particular function via `{"name": "my_function"}` forces the model to call that function.
863 ///
864 /// `none` is the default when no functions are present. `auto` is the default if functions are present.
865 #[deprecated]
866 #[serde(skip_serializing_if = "Option::is_none")]
867 pub function_call: Option<ChatCompletionFunctionCall>,
868
869 /// Deprecated in favor of `tools`.
870 ///
871 /// A list of functions the model may generate JSON inputs for.
872 #[deprecated]
873 #[serde(skip_serializing_if = "Option::is_none")]
874 pub functions: Option<Vec<ChatCompletionFunctions>>,
875
876 #[serde(skip_serializing_if = "Option::is_none")]
877 #[serde(flatten)]
878 pub extra_params: Option<serde_json::Value>,
879}
880
881/// Options for streaming response. Only set this when you set `stream: true`.
882#[derive(Debug, Serialize, Deserialize, Clone, Copy, PartialEq)]
883pub struct ChatCompletionStreamOptions {
884 /// If set, an additional chunk will be streamed before the `data: [DONE]` message. The `usage` field on this chunk shows the token usage statistics for the entire request, and the `choices` field will always be an empty array. All other chunks will also include a `usage` field, but with a null value.
885 pub include_usage: bool,
886}
887
888#[derive(Debug, Serialize, Deserialize, Clone, Copy, PartialEq)]
889#[serde(rename_all = "snake_case")]
890pub enum FinishReason {
891 Stop,
892 Length,
893 ToolCalls,
894 ContentFilter,
895 FunctionCall,
896}
897
898#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
899pub struct TopLogprobs {
900 /// The token.
901 pub token: String,
902 /// The log probability of this token.
903 pub logprob: f32,
904 /// A list of integers representing the UTF-8 bytes representation of the token. Useful in instances where characters are represented by multiple tokens and their byte representations must be combined to generate the correct text representation. Can be `null` if there is no bytes representation for the token.
905 pub bytes: Option<Vec<u8>>,
906}
907
908#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
909pub struct ChatCompletionTokenLogprob {
910 /// The token.
911 pub token: String,
912 /// The log probability of this token, if it is within the top 20 most likely tokens. Otherwise, the value `-9999.0` is used to signify that the token is very unlikely.
913 pub logprob: f32,
914 /// A list of integers representing the UTF-8 bytes representation of the token. Useful in instances where characters are represented by multiple tokens and their byte representations must be combined to generate the correct text representation. Can be `null` if there is no bytes representation for the token.
915 pub bytes: Option<Vec<u8>>,
916 /// List of the most likely tokens and their log probability, at this token position. In rare cases, there may be fewer than the number of requested `top_logprobs` returned.
917 pub top_logprobs: Vec<TopLogprobs>,
918}
919
920#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
921pub struct ChatChoiceLogprobs {
922 /// A list of message content tokens with log probability information.
923 pub content: Option<Vec<ChatCompletionTokenLogprob>>,
924 pub refusal: Option<Vec<ChatCompletionTokenLogprob>>,
925}
926
927#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
928pub struct ChatChoice {
929 /// The index of the choice in the list of choices.
930 pub index: u32,
931 pub message: ChatCompletionResponseMessage,
932 /// The reason the model stopped generating tokens. This will be `stop` if the model hit a natural stop point or a provided stop sequence,
933 /// `length` if the maximum number of tokens specified in the request was reached,
934 /// `content_filter` if content was omitted due to a flag from our content filters,
935 /// `tool_calls` if the model called a tool, or `function_call` (deprecated) if the model called a function.
936 pub finish_reason: Option<FinishReason>,
937 /// Log probability information for the choice.
938 pub logprobs: Option<ChatChoiceLogprobs>,
939}
940
941/// Represents a chat completion response returned by model, based on the provided input.
942#[derive(Debug, Deserialize, Clone, PartialEq, Serialize)]
943pub struct CreateChatCompletionResponse {
944 /// A unique identifier for the chat completion.
945 pub id: String,
946 /// A list of chat completion choices. Can be more than one if `n` is greater than 1.
947 pub choices: Vec<ChatChoice>,
948 /// The Unix timestamp (in seconds) of when the chat completion was created.
949 pub created: u32,
950 /// The model used for the chat completion.
951 pub model: String,
952 /// The service tier used for processing the request. This field is only included if the `service_tier` parameter is specified in the request.
953 pub service_tier: Option<ServiceTierResponse>,
954 /// This fingerprint represents the backend configuration that the model runs with.
955 ///
956 /// Can be used in conjunction with the `seed` request parameter to understand when backend changes have been made that might impact determinism.
957 pub system_fingerprint: Option<String>,
958
959 /// The object type, which is always `chat.completion`.
960 pub object: String,
961 pub usage: Option<CompletionUsage>,
962
963 /// Catching anything else that a provider wants to provide
964 #[serde(skip_serializing_if = "Option::is_none")]
965 #[serde(flatten)]
966 pub return_catchall: Option<serde_json::Value>,
967}
968
969/// Parsed server side events stream until an \[DONE\] is received from server.
970pub type ChatCompletionResponseStream = OpenAIEventStream<CreateChatCompletionStreamResponse>;
971
972#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
973pub struct FunctionCallStream {
974 /// The name of the function to call.
975 pub name: Option<String>,
976 /// The arguments to call the function with, as generated by the model in JSON format.
977 /// Note that the model does not always generate valid JSON, and may hallucinate
978 /// parameters not defined by your function schema. Validate the arguments in your
979 /// code before calling your function.
980 pub arguments: Option<String>,
981}
982
983#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
984pub struct ChatCompletionMessageToolCallChunk {
985 pub index: u32,
986 /// The ID of the tool call.
987 pub id: Option<String>,
988 /// The type of the tool. Currently, only `function` is supported.
989 pub r#type: Option<ChatCompletionToolType>,
990 pub function: Option<FunctionCallStream>,
991}
992
993/// A chat completion delta generated by streamed model responses.
994#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
995pub struct ChatCompletionStreamResponseDelta {
996 /// The contents of the chunk message.
997 pub content: Option<String>,
998 /// Deprecated and replaced by `tool_calls`. The name and arguments of a function that should be called, as generated by the model.
999 #[deprecated]
1000 pub function_call: Option<FunctionCallStream>,
1001
1002 pub tool_calls: Option<Vec<ChatCompletionMessageToolCallChunk>>,
1003 /// The role of the author of this message.
1004 pub role: Option<Role>,
1005 /// The refusal message generated by the model.
1006 pub refusal: Option<String>,
1007
1008 /// Catching anything else that a provider wants to provide, for example, a `reasoning` field
1009 #[serde(skip_serializing_if = "Option::is_none")]
1010 #[serde(flatten)]
1011 pub return_catchall: Option<serde_json::Value>,
1012}
1013
1014#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
1015pub struct ChatChoiceStream {
1016 /// The index of the choice in the list of choices.
1017 pub index: u32,
1018 pub delta: ChatCompletionStreamResponseDelta,
1019 /// The reason the model stopped generating tokens. This will be
1020 /// `stop` if the model hit a natural stop point or a provided
1021 /// stop sequence,
1022 ///
1023 /// `length` if the maximum number of tokens specified in the
1024 /// request was reached,
1025 /// `content_filter` if content was omitted due to a flag from our
1026 /// content filters,
1027 /// `tool_calls` if the model called a tool, or `function_call`
1028 /// (deprecated) if the model called a function.
1029 pub finish_reason: Option<FinishReason>,
1030 /// Log probability information for the choice.
1031 pub logprobs: Option<ChatChoiceLogprobs>,
1032}
1033
1034#[derive(Debug, Deserialize, Clone, PartialEq, Serialize)]
1035/// Represents a streamed chunk of a chat completion response returned by model, based on the provided input.
1036pub struct CreateChatCompletionStreamResponse {
1037 /// A unique identifier for the chat completion. Each chunk has the same ID.
1038 pub id: String,
1039 /// A list of chat completion choices. Can contain more than one elements if `n` is greater than 1. Can also be empty for the last chunk if you set `stream_options: {"include_usage": true}`.
1040 pub choices: Vec<ChatChoiceStream>,
1041
1042 /// The Unix timestamp (in seconds) of when the chat completion was created. Each chunk has the same timestamp.
1043 pub created: u32,
1044 /// The model to generate the completion.
1045 pub model: String,
1046 /// The service tier used for processing the request. This field is only included if the `service_tier` parameter is specified in the request.
1047 pub service_tier: Option<ServiceTierResponse>,
1048 /// This fingerprint represents the backend configuration that the model runs with.
1049 /// Can be used in conjunction with the `seed` request parameter to understand when backend changes have been made that might impact determinism.
1050 pub system_fingerprint: Option<String>,
1051 /// The object type, which is always `chat.completion.chunk`.
1052 pub object: String,
1053
1054 /// An optional field that will only be present when you set `stream_options: {"include_usage": true}` in your request.
1055 /// When present, it contains a null value except for the last chunk which contains the token usage statistics for the entire request.
1056 pub usage: Option<CompletionUsage>,
1057
1058 /// Catching anything else that a provider wants to provide
1059 #[serde(skip_serializing_if = "Option::is_none")]
1060 #[serde(flatten)]
1061 pub return_catchall: Option<serde_json::Value>,
1062}