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title: OpenAI DevDay 2026 live blog | daily.dev
description: A live-updating blog from Fort Mason, San Francisco covering OpenAI's DevDay 2026 keynote and sessions as they happen, following the same format as the prior...
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og:title: OpenAI DevDay 2026 live blog | daily.dev
og:description: A live-updating blog from Fort Mason, San Francisco covering OpenAI's DevDay 2026 keynote and sessions as they happen, following the same format as the prior...
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> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# OpenAI DevDay 2026 live blog

**[Simon Willison](https://daily.dev/sources/simonwillison)** · 1 min read · 0 upvotes · 0 comments

## Summary

A live-updating blog from Fort Mason, San Francisco covering OpenAI's DevDay 2026 keynote and sessions as they happen, following the same format as the prior year's coverage. The author also notes using Claude Code for web (after Codex Cloud issues) to vibe-code a photo-adding system for the live blog itself.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://simonwillison.net/2026/Sep/29/openai-devday-2026-live-blog>

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---

Tags: [#ai-agents](https://daily.dev/tags/ai-agents), [#openai](https://daily.dev/tags/openai)

[View this post on daily.dev](https://daily.dev/posts/openai-devday-2026-live-blog-u2frtiicn)

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