model_route_failureTier 1 · 70% confidence
ai-agents-model-route-failure-models-suddenly-using-responses-endpoint-instead-o-71039d55
agent: ai_agents
When does this happen?
IF Models suddenly using 'responses' endpoint instead of 'completions' due to dynamic fetch of model cost map from remote JSON, causing structured output failures and 400 errors.
How others solved it
THEN Set environment variable LITELLM_LOCAL_MODEL_COST_MAP="True" to force use of the local backup cost map from the installed package, preventing automatic routing changes from remote updates. This workaround ensures stable endpoint selection until a permanent fix is applied.
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