profile

Structs

Capability metadata for a specific model — context window, output limits, feature support, and optional cost information.

Use [ModelCapabilities::lookup] to resolve capabilities from the built-in registry, or construct manually for custom/self-hosted models.

Fields

Field	Type	Description
`context_window`	`u32`	Maximum input tokens the model can accept (context window size).
`max_output_tokens`	`u32`	Maximum tokens the model can generate in a single response.
`supports_tools`	`bool`	Whether the model supports function/tool calling.
`supports_vision`	`bool`	Whether the model supports vision (image) inputs.
`supports_streaming`	`bool`	Whether the model supports streaming responses.
`cost_per_1k_input`	`Option<f64>`	Cost per 1K input tokens (USD), if known. Used for budget tracking.
`cost_per_1k_output`	`Option<f64>`	Cost per 1K output tokens (USD), if known.

Methods

fn lookup(model_id: &str) -> Self

Look up capabilities for a model by its ID string.

Matches known model prefixes (e.g. “gpt-4o” matches “gpt-4o-2024-08-06”). Returns UNKNOWN_DEFAULT if no match is found.

fn available_for_history(&self, reserved_output: Option<u32>, system_tokens: u32, tools_tokens: u32) -> u32

Compute available budget for conversation history after reserving space for output, system prompt, and tool schemas.

Fields

Field	Type	Description
`model_id`	`String`
`family`	`ModelFamily`
`profile`	`ModelProfile`
`capabilities`	`Option<ModelCapabilities>`	Optional explicit capabilities override. When `None`, capabilities
`extensions`	`BTreeMap<String, serde_json::Value>`

Methods

fn resolve_capabilities(&self) -> ModelCapabilities

Resolve capabilities — explicit override takes priority, then static registry lookup, then conservative defaults for unknown models.

Variants

Variants