Updated Apr 28
Sep 30, 2026
ChatGPT Space replaces Library for eligible users, while Projects stay separate
OpenAI's DevDay launch gives teams a shared home for pages and files. The current help guide draws important lines around Projects, mobile editing, inherited access and automatic page updates.
OpenAIChatGPTSpace
Sep 30, 2026
ChatGPT plugins can now react to MCP events, with signed webhooks and clear limits
OpenAI's DevDay MCP Events launch lets a plugin start a ChatGPT workflow when its server reports a relevant change. The current integration uses verified, signed webhooks and leaves several mechanisms in the broader draft specification unsupported.
OpenAIChatGPTMCP
Sep 30, 2026
ChatGPT Sites can host plugins, but each visitor uses their own connection
OpenAI’s DevDay update brings supported plugins into Sites for workspaces. Builders still need to account for admin controls, visitor consent and limits on background access.
OpenAIChatGPTSites
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US Orders Anthropic to Shut Down Fable 5 and Mythos 5 Worldwide
The US government ordered Anthropic to block all foreign nationals from accessing its most powerful AI models, forcing the company to disable Claude Fable 5 and Mythos 5 globally. The unprecedented directive, reportedly triggered by concerns raised by Amazon CEO Andy Jassy, marks the most aggressive US export control action ever taken against a commercial AI model.
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Jun 12, 2026
OpenAI Buys Cloud Startup Ona So Codex Can Run Tasks While Your Laptop Is Closed
OpenAI is acquiring German cloud startup Ona to give Codex persistent cloud environments where AI agents can run multi-step coding tasks across hours or days — even when your laptop is shut. Codex now has over 5 million weekly active users.
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Jun 12, 2026
GPT-5.5 Beats Claude Fable 5 on Brutal New Agents' Last Exam Benchmark
OpenAI's GPT-5.5 beat Anthropic's brand-new Claude Fable 5 on the Agents' Last Exam benchmark, a grueling new test from UC Berkeley that measures whether AI can execute real, economically valuable professional workflows — and both models still fail most of the time.
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