langchain-openai==1.6.4

What moved

Changes since langchain-openai==1.6.3 release(openai): 1.6.4 ( #40775 ) chore(model-profiles): refresh openai model profile data ( #40774 )

Why it matters

Filed as a launch filing from LangChain, 2026-09-22.

On the record

• Filed from the LangChain official RSS on 2026-09-22.
• Primary source host: github.com.
• Changes since langchain-openai==1.6.3 release(openai): 1.6.4 ( #40775 ) chore(model-profiles): refresh openai model profile data ( #40774 )