Document explicit prompt caching support in ChatOpenAI#4829
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| ### Explicit caching with breakpoints (Responses API) | ||
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| <Note> | ||
| Requires `langchain-openai>=1.3.5` and `openai>=2.45.0`. Only supported when using the [Responses API](/oss/python/integrations/chat/openai#responses-api). |
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| Requires `langchain-openai>=1.3.5` and `openai>=2.45.0`. Only supported when using the [Responses API](/oss/python/integrations/chat/openai#responses-api). | |
| Requires `langchain-openai>=1.3.5`. Only supported when using the [Responses API](/oss/python/integrations/chat/openai#responses-api). |
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this is done transitively
| ### Explicit caching with breakpoints (Responses API) | ||
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| <Note> | ||
| Requires `langchain-openai>=1.3.5` and `openai>=2.45.0`. Only supported when using the [Responses API](/oss/python/integrations/chat/openai#responses-api). |
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Only supported when using the Responses API.
need to verify this claim
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| ```python | ||
| from langchain_openai import ChatOpenAI | ||
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| llm = ChatOpenAI(model="gpt-4.1", use_responses_api=True) |
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| llm = ChatOpenAI(model="gpt-4.1", use_responses_api=True) | |
| llm = ChatOpenAI(model="gpt-5.6-sol", use_responses_api=True) |
need to verify model string
don't think 4.1 supports
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| ```python | ||
| llm = ChatOpenAI( | ||
| model="gpt-4.1", |
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Mintlify preview branch generated: Site preview: https://langchain-5e9cc07a-preview-docsop-1783847326-6a62893.mintlify.app Important Preview links may take a few minutes to start working while the deployment finishes. Changed documentation pages (preview deep links): |
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Fixes DOC-1363
Summary
prompt_cache_breakpointfield on text, image, and file content blocksprompt_cache_optionsmodel parametercache_creationininput_token_detailsusage metadata, including priority/flex service-tier variantsThese features were added in langchain-ai/langchain#38762 (
langchain-openai>=1.3.5,openai>=2.45.0).Links
Verification
Cross-references checked:
make check-cross-refspassed ✅. Vale not available in sandbox (brew dependency), but the content is prose-only additions with no structural changes.Reviewers
Requested review from: Mason Daugherty (@mdrxy) (integrations owner)