# We’re introducing Claude Fable 5\.1 and Claude Mythos 5\.1

[Reference page](https://posts.design/we-re-introducing-claude-fable-5-1-and-2026-09-01) · [Markdown](https://posts.design/we-re-introducing-claude-fable-5-1-and-2026-09-01.md) · [Original source](https://x.com/claudeai/status/2094848572143407483)

- Kind: post
- Media: video
- Posting account: Claude · @claudeai
- Account: [claudeai](https://x.com/claudeai)
- Represented brand: Claude
- Subjects: AI, Developer Tools
- Source published: 2026\-09\-01T18:03:14\.000Z
- Captured: 2026\-09\-01
- Added to posts.design: 2026\-09\-01T18:54:53\.973Z
- Recorded views: 21060637 · captured 2026\-10\-11T23:23:12\.092Z · refresh\-observed\-public

![We’re introducing Claude Fable 5\.1 and Claude Mythos 5\.1 — public x\-twitter post media curated for social post design inspiration\.](https://posts.design/images/posts/x-twitter-claudeai-2094848572143407483-claude-fable-5-1-claude-mythos.webp)

1080 × 1080

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