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feat(model-catalog): read successor_model, the provider's recommended replacement for a deprecating row (#49791)

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* feat(model-catalog): read successor_model, the provider's recommended replacement for a deprecating row

* test(cost-map): allow successor_model in the cost map row schema

---------

Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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Kerry Lu 2026-11-03 11:51:44 -08:00 • committed by GitHub
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4
litellm-rust/crates/model-catalog/src/wire/attributes.rs
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@ -93,6 +93,8 @@ attributes! {
search_free_requests: SearchFreeRequests,
/// URL of the provider pricing/model page this entry was taken from.
source: String,
/// Model the provider recommends migrating to before `deprecation_date`, as a catalog key when one exists.
successor_model: String,
/// Audio container formats the model can return.
supported_audio_formats: Vec<AudioFormat>,
/// OpenAI-style API routes this model can be called through, e.g. /v1/chat/completions.
@ -303,6 +305,8 @@ mod tests {
#[case::known_mode("mode", json!("chat"), true)]
#[case::unknown_mode("mode", json!("chatt"), false)]
#[case::negative_dbu("input_dbu_cost_per_token", json!(-1), false)]
#[case::successor_model("successor_model", json!("gpt-6-luna"), true)]
#[case::successor_model_not_a_name("successor_model", json!(["gpt-6-luna"]), false)]
#[case::thinking_on_by_default("thinking_on_by_default", json!(true), true)]
#[case::thinking_on_by_default_not_a_flag("thinking_on_by_default", json!("yes"), false)]
#[case::reasoning_contexts("reasoning_contexts", json!(["reasoning", "non_reasoning"]), true)]

1
tests/unit/test_utils.py
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@ -1026,6 +1026,7 @@ _COST_MAP_ROW_SCHEMA: Final = {
"cache_read_input_image_token_cost": {"type": "number"},
"audio_transcription_config": {"type": "string"},
"deprecation_date": {"type": "string"},
"successor_model": {"type": "string"},
"input_cost_per_audio_per_second": {"type": "number"},
"input_cost_per_audio_per_second_above_128k_tokens": {"type": "number"},
"google_maps_grounding_cost_per_query": {"type": "number"},