Anthropic · 1 Sep 2026

Claude Fable 5.1

Anthropic's generally-available Mythos-class model, released 1 September 2026. On the board for Pip & Pocket only — it shipped after the original four-brief run. The sticker-album childcare site is one generation, not a series, and should be read that way.

Official Claude Fable 5.1 page1 of 4 briefs

Pip & Pocket site built by Claude Fable 5.1
01 · Early learning centre

Pip & Pocket

A sticker album kept by a very organised adult: cream dot-grid paper, thick-ink cut-paper shapes, hard offset shadows. Ratios, timings and fees stay tabular underneath.

index.html · 86 KB