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I live-blogged the keynote here, adding a little bit of extra commentary and links along the way: https://simonwillison.net/2025/Oct/6/openai-devday-live-blog/

• naiv 1y ago
  "Sam says today Codex is out of preview and into GA. But which one! Codex CLI or Codex Cloud or both?" The cloud version as "Starting October 20, Codex cloud tasks will also begin counting towards your Codex usage"
• Awesomedonut 1y ago
  Reading through this was so cool! What was being in-person at the keynote like, overall?