Next Fable Model (5.2+) released by December 31, 2026?

As of November 4, 2026, Polymarket prices “Next Fable Model (5.2+) released by December 31, 2026?” at 94% YES with $64K traded. No tracked wallet holds a position on this market, so there is no verdict.

Anthropic has not announced a Fable 5.2+ release date, but the 94% YES odds reflect strong market confidence it will ship publicly by December 31, 2026.

What’s Happening

Traders on Polymarket assigned a 94% probability that Anthropic's next Fable model (5.2+) would be released by December 31, 2026, according to the market's resolution criteria, which require the model to be made available to the general public before the deadline. The contract has drawn $139,598 in total volume, with activity concentrated in near-term deadline contracts — the October 31 tranche alone recorded $59,722 in trades — while the year-end contract carried $6,828. The market's readouts climbed from 22% to 97% across deadline contracts in a screenshot captured October 7, 2026. [Orcarouter, Oct 08]

The pricing follows a series of corporate developments at Anthropic. On September 28, 2026, Reuters reported the company rolled out a second Claude 5.5 model as it builds toward an IPO, and a draft prospectus leaked to Fortune the following day indicated a $2 trillion IPO valuation. Prediction-market odds for a near-term release moved sharply after an Azure leak, with the probability of a release by October 17 jumping about 28 points in a single day, according to market commentary checked on October 13, 2026. Separate Manifold contracts put a 71% chance that Anthropic releases at least two more Fable models before 2027. [GPTunneL, Oct 20]

Attention now centers on whether the next Fable model (5.2+) reaches general availability before the December 31, 2026, 11:59 PM UTC cutoff, the market's scheduled deadline. Related contracts on Manifold show a 47% chance for the timing of the next Claude Fable release and a 25% chance assigned to a Claude Fable 5.2+ release date, reflecting uncertainty over the exact launch window even as the year-end contract holds near certainty. Resolution depends solely on public availability of the model, not on announcement or preview access. [CryptoSlate, Oct 29]

Traded on Polymarket — $64K Volume