As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/p/x-claudeai-2119899459761131615/

# “During pre-release testing, Claude Fable 5.2 and Claude Mythos 5.2 worked on…”

Claude (@claudeai), X, 2026-11-09.
Source: https://x.com/claudeai/status/2119899459761131615

## Archived text

> During pre-release testing, Claude Fable 5.2 and Claude Mythos 5.2 worked on ambitious projects in many different fields. Here are a few.
> 
> From a one-paragraph prompt, Fable 5.2 designed three working electronic devices, including this home voice assistant hub.

Archived 2026-11-12 via fxtwitter (unofficial).
Counts: 7,054,751 views, 42,974 likes, 2,910 reposts, 807 replies (at fetch time)
Media: https://video.twimg.com/amplify_video/2119889970664030208/vid/avc1/3840x2160/TjiSWoJMgqYdilSp.mp4?tag=29

## Cited in

- 2026-11-09: [Anthropic releases Claude Fable 5.2 and Claude Mythos 5.2](https://postcutoff.com/e/2026-11-09-claude-fable-5-2-mythos-5-2/)