openrouter_reasoning/
openrouter_reasoning.rs

1use openai_api_rs::v1::api::OpenAIClient;
2use openai_api_rs::v1::chat_completion::chat_completion::ChatCompletionRequest;
3use openai_api_rs::v1::chat_completion::{self, Reasoning, ReasoningEffort, ReasoningMode};
4use std::env;
5
6#[tokio::main]
7async fn main() -> Result<(), Box<dyn std::error::Error>> {
8    let api_key = env::var("OPENROUTER_API_KEY").unwrap().to_string();
9    let mut client = OpenAIClient::builder()
10        .with_endpoint("https://openrouter.ai/api/v1")
11        .with_api_key(api_key)
12        .build()?;
13
14    // Example 1: Using reasoning with effort
15    let mut req = ChatCompletionRequest::new(
16        "x-ai/grok-3-mini".to_string(), // Grok model that supports reasoning
17        vec![chat_completion::ChatCompletionMessage {
18            role: chat_completion::MessageRole::user,
19            content: chat_completion::Content::Text(String::from(
20                "Explain quantum computing in simple terms.",
21            )),
22            name: None,
23            tool_calls: None,
24            tool_call_id: None,
25        }],
26    );
27
28    // Set reasoning with high effort
29    req.reasoning = Some(Reasoning {
30        mode: Some(ReasoningMode::Effort {
31            effort: ReasoningEffort::High,
32        }),
33        exclude: Some(false), // Include reasoning in response
34        enabled: None,
35    });
36
37    let result = client.chat_completion(req).await?;
38    println!("Content: {:?}", result.choices[0].message.content);
39
40    // Example 2: Using reasoning with max_tokens
41    let mut req2 = ChatCompletionRequest::new(
42        "anthropic/claude-4-sonnet".to_string(), // Claude model that supports max_tokens
43        vec![chat_completion::ChatCompletionMessage {
44            role: chat_completion::MessageRole::user,
45            content: chat_completion::Content::Text(String::from(
46                "What's the most efficient sorting algorithm?",
47            )),
48            name: None,
49            tool_calls: None,
50            tool_call_id: None,
51        }],
52    );
53
54    // Set reasoning with max_tokens
55    req2.reasoning = Some(Reasoning {
56        mode: Some(ReasoningMode::MaxTokens { max_tokens: 2000 }),
57        exclude: None,
58        enabled: None,
59    });
60
61    let result2 = client.chat_completion(req2).await?;
62    println!("Content: {:?}", result2.choices[0].message.content);
63
64    Ok(())
65}
66
67// OPENROUTER_API_KEY=xxxx cargo run --package openai-api-rs --example openrouter_reasoning
openrouter_reasoning/openrouter_reasoning.rs

openrouter_reasoning/
openrouter_reasoning.rs
