Updated Apr 27
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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Jun 10, 2026
Anthropic Releases Claude Fable 5, First Public Mythos-Class AI Model
Anthropic has released Claude Fable 5, the first Mythos-class AI model available to the general public. The model tops coding benchmarks with 80.3% on SWE-Bench Pro and can perform codebase-wide migrations in a single day — but comes with new safety guardrails that route sensitive queries to a weaker model.
claude-fable-5anthropicmythos-class-ai
Jun 9, 2026
Trump Signs AI Security Order Requiring 30-Day Review of Frontier Models
President Trump signed an executive order mandating a voluntary 30-day pre-release cybersecurity review for frontier AI models, a direct response to Anthropic's Mythos model. The order creates a Treasury-led clearinghouse for vulnerability scanning and marks a shift from the administration's deregulatory stance toward federal AI oversight.
trump-ai-executive-orderai-safety-regulationfrontier-model-review
May 27, 2026
Anthropic's Mythos AI Finds 10,000 High-Severity Flaws in Critical Software
Anthropic's Claude Mythos Preview has discovered more than 10,000 high- or critical-severity vulnerabilities across systemically important software in its first month — but the real bottleneck is now human capacity to triage and patch the flood of findings.
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