77 lines
3.0 KiB
Rust
77 lines
3.0 KiB
Rust
use crate::model_family::ModelFamily;
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/// Metadata about a model, particularly OpenAI models.
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/// We may want to consider including details like the pricing for
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/// input tokens, output tokens, etc., though users will need to be able to
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/// override this in config.toml, as this information can get out of date.
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/// Though this would help present more accurate pricing information in the UI.
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#[derive(Debug)]
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pub(crate) struct ModelInfo {
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/// Size of the context window in tokens.
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pub(crate) context_window: u64,
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/// Maximum number of output tokens that can be generated for the model.
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pub(crate) max_output_tokens: u64,
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/// Token threshold where we should automatically compact conversation history.
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pub(crate) auto_compact_token_limit: Option<i64>,
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}
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impl ModelInfo {
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const fn new(context_window: u64, max_output_tokens: u64) -> Self {
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Self {
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context_window,
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max_output_tokens,
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auto_compact_token_limit: None,
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}
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}
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}
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pub(crate) fn get_model_info(model_family: &ModelFamily) -> Option<ModelInfo> {
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let slug = model_family.slug.as_str();
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match slug {
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// OSS models have a 128k shared token pool.
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// Arbitrarily splitting it: 3/4 input context, 1/4 output.
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// https://openai.com/index/gpt-oss-model-card/
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"gpt-oss-20b" => Some(ModelInfo::new(96_000, 32_000)),
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"gpt-oss-120b" => Some(ModelInfo::new(96_000, 32_000)),
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// https://platform.openai.com/docs/models/o3
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"o3" => Some(ModelInfo::new(200_000, 100_000)),
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// https://platform.openai.com/docs/models/o4-mini
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"o4-mini" => Some(ModelInfo::new(200_000, 100_000)),
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// https://platform.openai.com/docs/models/codex-mini-latest
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"codex-mini-latest" => Some(ModelInfo::new(200_000, 100_000)),
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// As of Jun 25, 2025, gpt-4.1 defaults to gpt-4.1-2025-04-14.
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// https://platform.openai.com/docs/models/gpt-4.1
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"gpt-4.1" | "gpt-4.1-2025-04-14" => Some(ModelInfo::new(1_047_576, 32_768)),
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// As of Jun 25, 2025, gpt-4o defaults to gpt-4o-2024-08-06.
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// https://platform.openai.com/docs/models/gpt-4o
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"gpt-4o" | "gpt-4o-2024-08-06" => Some(ModelInfo::new(128_000, 16_384)),
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// https://platform.openai.com/docs/models/gpt-4o?snapshot=gpt-4o-2024-05-13
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"gpt-4o-2024-05-13" => Some(ModelInfo::new(128_000, 4_096)),
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// https://platform.openai.com/docs/models/gpt-4o?snapshot=gpt-4o-2024-11-20
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"gpt-4o-2024-11-20" => Some(ModelInfo::new(128_000, 16_384)),
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// https://platform.openai.com/docs/models/gpt-3.5-turbo
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"gpt-3.5-turbo" => Some(ModelInfo::new(16_385, 4_096)),
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_ if slug.starts_with("gpt-5-codex") => Some(ModelInfo {
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context_window: 272_000,
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max_output_tokens: 128_000,
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auto_compact_token_limit: Some(220_000),
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}),
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_ if slug.starts_with("gpt-5") => Some(ModelInfo::new(272_000, 128_000)),
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_ if slug.starts_with("codex-") => Some(ModelInfo::new(272_000, 128_000)),
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_ => None,
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}
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}
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