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OpenAI Release notes and new features

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OpenAI releases

November 2026 digest

5 releases

You can now update the tools in an existing session in the Agents API public beta

You can now update the tools in an existing session in the Agents API public beta. Updates replace the full tool list. Function tools and MCP servers change on the next model call; built-in tools change by the next turn. Context compaction now runs in the background by default. Set compaction.async to false for blocking compaction.

Beta
About and activity

OpenAI is an American artificial intelligence (AI) public benefit corporation (PBC) headquartered in San Francisco, California. It develops proprietary generative AI models, particularly its generative pre-trained transformer (GPT) series of large language models.

Official release-notes pages 10
Release-notes pageFeed
Codex changelog
learn.chatgpt.com
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github.com
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Agents SDK (JS) releases
github.com
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Agents SDK (Python) releases
github.com
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API changelog (developers)
developers.openai.com
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ChatGPT , Release Notes
help.openai.com
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ChatGPT Enterprise and Edu release notes
help.openai.com
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Node SDK releases
github.com
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Python SDK releases
github.com
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Release Notes
openai.com
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