I'm at OpenAI's DevDay event in San Francisco today - as I have | Tech Twitter

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I'm at OpenAI's DevDay event in San Francisco today - as I have | Tech Twitter

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I'm at OpenAI's DevDay event in San Francisco today - as I have for the past three DevDay events, I'm running a live blog where I'll be posting updates during the keynote, which starts in five minutes https://simonwillison.net/2026/Sep/29/op…

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