Anthropic · Rumored
Claude Fable 5.5 release date
Projected name. No report has named this version yet; it follows the lab's own numbering, and changes once reports agree on a name.
Window
Nov 8–28
Earliest
Nov 8
Best guess
Nov 11
Latest
Nov 28
Why this date
- Where this comes from100
0% cadence, 100% market.
- Window tightness49
80% window spans 20 days (σ ≈ 12.9d).
- Corroboration40
2 distinct sources, worth 1.3 weighted. Aggregator reposts count for little.
- Source authority0
No live dated claims; the date comes from the prediction market and shipping cadence.
The signal score is our own weighting of the evidence above. It is not a calibrated probability, and nothing here has been scored against real outcomes yet. Treat “Mixed” as the honest summary and the number as its arithmetic.
Every claim
2 from 2 sources- PolymarketBetting marketOct 2
Polymarket, “Next Fable Model (5.2+) released by...?”: 26% by Nov 9, 45% by Nov 10, 52% by Nov 12, 72% by Nov 19. $1.4M traded.
- TestingCatalogSpotted in the wildSep 21
Claude Fable 5.2 demonstrated in early test clips building JavaScript games and animations.