QQeravio
עברית
Canonical AI event

LangChain v1.5.13 fixes OpenAI API replay for responses with multiple reasoning items.

The OpenAI Responses API replay now preserves reasoning item order in v0 and fixes content blocks in v1.

1 Sept 20261 verified claims1 sources4 observations
What happened

The official source reports this update: @langchain/openai@1.5.13. Patch Changes #11590 ffebdc2 Thanks @thushanth-bengre-langchain ! - Fix OpenAI Responses API replay under Zero Data Retention when a response contains more than one reasoning item, for both v0 and v1. In v0, the default replay path now reuses response_metadata.output directly, preserving every reasoning item's id / encrypted_content in original order. In v1, AIMessage.contentBlocks ( outputVersion: "v1" ) is fixed the same way. additional_kwargs.reasoning is unchanged.

Why it matters

This official update documents a development concerning @langchain/openai@1.5.13. Its practical significance depends on the scope and evidence stated by the source.

What to watch next

Read the official source update and verify its stated scope, evidence and timing before acting on it.

Connected knowledge

Entities affected by this event

Langchainjssubject
Continue this topic
agents-softwareLangChain 1.0.53 now requires LangSmith 0.11.0 or higher.16 Oct 2026agents-softwareThe MCPClientError now includes the SSE attempt's SDK error as its cause.6 Oct 2026agents-softwareThe LangChain library now retries failed tool calls in createAgent.27 Sept 2026agents-softwareOpenRouter 0.4.15 updates OpenAI dependency to 1.6.027 Sept 2026agents-softwareThe Anthropic library now accepts SystemMessages at any position in the message list.22 Sept 2026agents-softwareGoogle's Langchain Adds Gemini Function-Calling Support1 Sept 2026
Evidence trail

Sources behind the event

LangChain.js official releases@langchain/openai@1.5.13LangChain.js official releases@langchain/openai@1.5.12LangChain.js official releases@langchain/openai@1.5.12-rc.0LangChain.js official releases@langchain/openai@1.5.11
Editorial presentation

Read the public story

Open story