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US$5,000 forecasting contest · Free · No purchase necessary · US & Canada 18+ · Opens at 1,000 entrantsOpens at 1,000 entrants

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Next Fable Model (5.3+) released by...?

Polymarket prediction market· Same prices, rules and result

Polymarket prices · as of Polymarket 24h vol $11.2

Polymarket chance · the 3 levels nearest 50%

January 31 46%February 28 54%December 31 45%

Each level is its own Yes or No; they don't add to 100%. Levels are in price order, as on Polymarket.

3 levels openin level order

OptionBuy
December 31No smart money45%
January 31No smart money46%
February 28No smart money54%

3 open levels, in level order.

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Polymarket's traders in this topic by 3-month profit
OptionYes holdersNo holdersYes · No

3 options: no ranked trader holds them

Best-ranked first. Tier 1 ranks 1–10, Tier 2 ranks 11–50.

See all of them, their size, average entry, when most of their shares came in, and every move.

Past performance is not indicative of future results.

Rules

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Resolution criteria
This market will resolve to "Yes" if Anthropic's next Fable model (5.3+) is made available to the general public between market creation and the specified date (ET). Otherwise, this market will resolve to "No". A qualifying model must have a name or model identifier that includes "Fable" and be designated as version 5.3 or higher, regardless of capitalization or surrounding prefixes, suffixes, dates, or descriptors. For example, a version 5.3 or higher named in the same manner as Claude Fable 5.1 or Claude Fable 5.2 would qualify, including a new whole-number generation such as Claude Fable 6, while models whose name does not include "Fable" or which retain a version designation below 5.3, such as Claude Fable 5.2 or Claude Mythos 5.2, will not qualify. A qualifying model must be launched and publicly accessible, including via open beta or open rolling waitlist signups. A closed beta or any form of private access will not suffice. The release must either be clearly defined and publicly announced by Anthropic as accessible to the general public, or otherwise be made publicly accessible and explicitly labeled on the company's official website. Labeling errors, placeholder text, or version names displayed on the website that do not correspond to a model that is actually accessible to the general public will not qualify. The primary resolution source for this market will be official information from Anthropic, with additional verification from a consensus of credible reporting.