_model_prefers_responses_api() — langchain Function Reference

Architecture documentation for the _model_prefers_responses_api() function in base.py from the langchain codebase.

Function python LangChainCore LanguageModelBase called by 1

Entity Profile

LangChainCore→ LanguageModelBase→ _model_prefers_responses_api() — langchain Function Reference

Dependency Diagram

graph TD
  f223b022_8c85_fb5d_4df0_fb72e4ffb985["_model_prefers_responses_api()"]
  2b046911_ea21_8e2e_ba0d_9d03da8d7bda["base.py"]
  f223b022_8c85_fb5d_4df0_fb72e4ffb985 -->|defined in| 2b046911_ea21_8e2e_ba0d_9d03da8d7bda
  e9866be0_b078_31ff_4159_1d040978b7e3["_use_responses_api()"]
  e9866be0_b078_31ff_4159_1d040978b7e3 -->|calls| f223b022_8c85_fb5d_4df0_fb72e4ffb985
  style f223b022_8c85_fb5d_4df0_fb72e4ffb985 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/partners/openai/langchain_openai/chat_models/base.py lines 502–505

def _model_prefers_responses_api(model_name: str | None) -> bool:
    if not model_name:
        return False
    return "gpt-5.2-pro" in model_name or "codex" in model_name