Anthropic · model release forecast
When is the next Fable Model (5.2+) expected to be released?
Market-implied median · middle 50%: Oct 4 to Oct 29
30% within a week82% within a monthPrediction markets currently put the next Fable Model (5.2+) release around Oct 16, 2026, with a middle-50% window from Oct 4, 2026 to Oct 29, 2026. Markets imply a 30% chance of landing within a week of that date, and 82% within a month. The estimate is based on 2 active deadline contracts with $28K of traded volume. It has moved 32 days earlier over the past 16 days.
Release alerts
Get told when this date moves
One email the day before the the next Fable Model (5.2+) forecast date, and one on the day itself. Two emails per release, nothing else.
The evidence
Release probability by deadline
| Deadline | Probability bar | Probability |
|---|---|---|
| By Oct 31, 2026 | 79% | |
| By Dec 31, 2026 | 91% |
Forecast history
How this estimate has moved
Since Sep 6, 2026 the expected release date for the next Fable Model (5.2+) has moved 32 days earlier, from Nov 18, 2026 to Oct 17, 2026.
Common questions
About the Next Fable Model (5.2+) forecast
When is the next Fable Model (5.2+) expected to be released?
Prediction markets currently put the next Fable Model (5.2+) release around Oct 16, 2026, with a middle-50% window from Oct 4, 2026 to Oct 29, 2026. Markets imply a 30% chance of landing within a week of that date, and 82% within a month. The estimate is based on 2 active deadline contracts with $28K of traded volume. It has moved 32 days earlier over the past 16 days.
How precise is the Next Fable Model (5.2+) release date forecast?
Markets place 30% of the probability within a week of the median date and 82% within a month. A date with only a few percent inside a week should be read as a month, not a day.
Where does the Next Fable Model (5.2+) release forecast come from?
Each public "released by <date>?" contract on Polymarket gives one point on a cumulative probability curve. Release Oracle sorts those points, corrects small inconsistencies, then interpolates the 50% crossing for the headline date and the 25% and 75% crossings for its uncertainty window. Forecasts are market signals, not lab announcements, and can be wrong.
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