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Will the next Fable model (5.2+) debut at a score of at least 1520 by June 30, 2027?
Next Fable Model (5.2+): Text Arena Debut?
Screened using the explicit question date; payout timing still follows the rules.
Contract resolution rules
Resolves Yes if the next Anthropic Claude Fable model (5.2+) newly added to the Arena.AI leaderboard has a score ≥1520 at 12:00 PM ET the day after first appearance; otherwise No. Uses the Score column under Text Arena | Overall with style control off. AutoEval models excluded. If multiple models debut same day, highest score used. If removed before the snapshot, not qualifying. If source unavailable for 7 days or no qualifying model by June 30, 2027, resolves No.
Conditions for a winning outcome
A model qualifies if it is newly added to the Arena.AI leaderboard, its name includes 'Fable' (case-insensitive), and its version is 5.2 or higher (e.g., Claude Fable 5.2, Claude Fable 6). The model must not be marked 'AutoEval'. The score used is the value in the Score column under the Text Arena | Overall tab with style control off, at 12:00 PM ET on the calendar date following the date it first appears. If multiple qualifying models debut on the same calendar date (ET), the highest-scoring one is used. The model's prior release or availability outside the leaderboard is irrelevant.
Exclusions and exceptions
A model does not qualify if its name does not include 'Fable' (e.g., Claude Mythos 5.1), or its version is below 5.2 (e.g., Claude Fable 5.1). Models marked 'AutoEval' are excluded. If a model appears on the leaderboard but is removed before 12:00 PM ET the next calendar day and not re-added, it does not qualify. Models added on the calendar date after the initial qualifying model's first appearance are not considered. If no qualifying model is added by June 30, 2027, 11:59 PM ET, the market resolves No.
Timing & resolution
The score is measured at 12:00 PM ET on the calendar date following the date the qualifying model first appears on the leaderboard. If the leaderboard is unavailable at that time, the deadline extends to the first subsequent instance it becomes available, up to 7 days after first appearance. If still unavailable after 7 days, or if no qualifying model appears by June 30, 2027, 11:59 PM ET, the market resolves No.
Ambiguities in the rules
The rules do not specify how to break a tie if two or more models share the identical highest score on the same calendar date (ET). The source says 'the highest-scoring model will be used' but provides no tiebreaker criterion.
AI-assisted explanation of this version of the source rules. It does not replace the provider’s terms.
Original resolution rules
Outcome prices and implied probabilities
Compare the quoted price for each outcome. The amounts below assume a $1 payout for a winning share.
Prices describe trading, not certainty or an independent forecast. Bid / ask for the first outcome: 0.55 / 0.57. Market liquidity is not guaranteed fill size.
Fetched 2026-10-24T13:00:09+00:00 · Provider updated 2026-10-24T12:58:38.586118Z
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