Struct ModelSpec 

pub struct ModelSpec {
    pub id: String,
    pub provider_id: String,
    pub upstream_model: String,
    pub context_window: Option<u32>,
    pub max_output_tokens: Option<u32>,
    pub modalities: Modalities,
    pub knowledge_cutoff: Option<String>,
    pub input_token_price_per_million_usd: Option<f64>,
    pub output_token_price_per_million_usd: Option<f64>,
}

Serializable model offering: addressing (id, provider, upstream model), intrinsic capabilities (context window, max output tokens, modalities, knowledge cutoff), and per-million-token pricing.

Fields

id: String

Stable id used by AgentSpec.model_id. Unique within a registry.

provider_id: String

Provider this offering routes through.

upstream_model: String

Model name sent to the upstream API.

context_window: Option<u32>

Maximum context window in tokens, when published by the provider.

max_output_tokens: Option<u32>

Hard ceiling on a single response’s output tokens, when published.

modalities: Modalities

Input/output modalities supported by the model.

Semantics: an empty Modalities (or default()) means the model’s modality set is unspecified, so runtime stays permissive. Explicit empty arrays carry the same meaning as omission. When input is non-empty, runtime rejects requests containing unsupported input modalities before calling the provider. To advertise a text-only model, set input: vec![Modality::Text] explicitly.

knowledge_cutoff: Option<String>

ISO date string (e.g. “2026-01”) for the model’s training cutoff.

Deserialization rejects any value that is not a well-formed YYYY-MM or YYYY-MM-DD date. This field is runtime-trusted — it is injected verbatim into the agent’s system context — so an unvalidated string from config, a tenant, or an external registry would be a prompt-injection surface. Validating at the deserialization boundary closes it for every source.

input_token_price_per_million_usd: Option<f64>

Optional input-token price in USD per million tokens. When paired with output_token_price_per_million_usd, eval runs populate ReplayReport.cost_usd so cost surfaces in regression diffs.

output_token_price_per_million_usd: Option<f64>

Optional output-token price in USD per million tokens.

Implementations

impl ModelSpec

pub fn new( id: impl Into<String>, provider_id: impl Into<String>, upstream_model: impl Into<String>, ) -> ModelSpec

Convenience constructor for tests and bootstrap code. Capability and pricing fields default to None / empty.

pub fn compute_cost_usd( &self, input_tokens: u32, output_tokens: u32, ) -> Option<f64>

USD cost from per-million pricing. Returns None unless both input and output prices are set — partial pricing would silently under-report cost.

Trait Implementations

impl Clone for ModelSpec

fn clone(&self) -> ModelSpec

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ConfigRecordMerge for ModelSpec

type Patch = NoConfigPatch

fn merge_patch( self, _patch: NoConfigPatch, ) -> Result<ModelSpec, ConfigRecordError>

impl Debug for ModelSpec

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ModelSpec

fn deserialize<__D>( __deserializer: __D, ) -> Result<ModelSpec, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for ModelSpec

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for ModelSpec

fn eq(&self, other: &ModelSpec) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ModelSpec

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ModelSpec