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Will the next Fable model (5.2+) debut at a score of at least 1510 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
Market resolves Yes if next Claude Fable model (5.2+) appears on Arena.AI leaderboard and its Score column (style control off) at 12:00 PM ET the next calendar day is at least 1510. Otherwise No.
Conditions for a winning outcome
A model qualifies if its name includes 'Fable' and version is 5.2 or higher (e.g., Claude Fable 5.2, Claude Fable 6). It must be newly added to the leaderboard at https://arena.ai/leaderboard/text/overall-no-style-control, not marked 'AutoEval'. If multiple models debut on the same calendar date ET, the highest-scoring one is used. The score from the Score column (style control off) at 12:00 PM ET on the calendar day after first appearance must be ≥1510. If the leaderboard is unavailable at that time, resolution uses the first subsequent available score, up to 7 days after first appearance. If it remains unavailable through the end of the seventh day, resolves No.
Exclusions and exceptions
Does not qualify if the model's name lacks 'Fable' or version is below 5.2 (e.g., Claude Fable 5.1, Claude Mythos 5.1). Models marked 'AutoEval' are excluded. If a model appears but is removed before 12:00 PM ET the next calendar day and not re-added, it does not qualify. If no qualifying model appears by June 30, 2027, 11:59 PM ET, resolves No. If the leaderboard remains unavailable for 7 days after first appearance, resolves No. Scores below 1510 resolve No.
Timing & resolution
The score is checked at 12:00 PM ET on the calendar date following the date the qualifying model first appears on the leaderboard. If unavailable, resolution uses the first subsequent available score up to 7 days after first appearance. If no qualifying model appears by June 30, 2027, 11:59 PM ET, resolves No. Provider end date is 2027-07-01T03:59:00Z.
Ambiguities in the rules
Source rules are unambiguous: 'calendar date following the date on which it first appears' means the next calendar day regardless of the time of first appearance. The score is checked at 12:00 PM ET on that next day. No ambiguity.
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: 0.79 / 0.8. 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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