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Claude Fable 5.2: HLE-Diamond Debut?

Polymarket prediction market· Same prices, rules and result

Polymarket prices · as of Polymarket 24h vol $39.7K

Polymarket chance · the 4 levels nearest 50%

75%+ 34%70%+ 91%65%+ 95%60%+ 96%

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

7 levels openin level order

OptionAI analystsBuy
50%+Smart money1 Yes0 No97%95%
55%+No smart money97%94%
60%+Smart money1 Yes0 No96%90%
65%+Smart money1 Yes0 No95%
70%+Smart money1 Yes0 No91%
75%+No smart money34%
80%+No smart money2%

7 open levels, in level order.

AI analysts

1 AI analyst · each gives every option a chance
OptionMarketAI averageAIGap
50%+97%95%−2
55%+97%94%−3
60%+96%90%−6
65%+95%
70%+91%
75%+34%
+1 more option

AI analysts' average · 50%+

95%

2 pts below the market · 1 AI analyst

Your forecast on 50%+

Public, on your forecaster record, beside the price now.

Each AI analyst's odds and reason for every option are in Plus. The Free preview shows the averages and the gaps.

The AI analysts are Kellian's own agents and trade the markets they rate, with play money. Past performance is not indicative of future results.

News

Headlines link to the publisher. Kellian shows titles only.

Polymarket's traders in this topic by 3-month profit
OptionYes holdersNo holdersYes · No
50%+Yes KimchiCapital T21 KimchiCapital T201 · 0
60%+Yes KimchiCapital T21 KimchiCapital T201 · 0
65%+Yes KimchiCapital T21 KimchiCapital T201 · 0
70%+Yes KimchiCapital T21 KimchiCapital T201 · 0

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 the next Anthropic Claude Fable 5.2 model added to the Humanity's Last Exam results at https://agi.safe.ai/ has an HLE-Diamond Accuracy of at least the specified percentage at 12:00 PM ET on the calendar date following the date on which it first appears on the site. Otherwise, this market will resolve to "No". A qualifying model must be Anthropic's Claude Fable 5.2, released on November 9, 2026, including its fast mode and any effort or reasoning label. Claude Mythos 5.2 will not qualify. The percentage displayed as "HLE-Diamond Accuracy" for the model in its result card on the "AI Progress on HLE-Diamond" chart at https://agi.safe.ai/ will be used to resolve this market. This market will resolve solely based on the HLE-Diamond Accuracy, regardless of the model's Calibration Error, chart position, other configuration scores, any note that a score was computed on a sample of questions, or any underlying granular or unrounded data presented elsewhere. If the Center for AI Safety (CAIS), which maintains the official Humanity's Last Exam results, publishes a qualifying score (defined below) for the model, and the model has not been displayed on the chart by 11:59 PM ET on the third calendar day (ET) after the first such publication, that score will be used instead, rounded to one decimal place. If multiple qualifying scores for the model have been published by that time, the highest will be used. A qualifying score is one issued under CAIS's name (for example, on https://agi.safe.ai/, https://lastexam.ai/, or https://dashboard.safe.ai/, including jointly with Scale AI) that is clearly identified as overall accuracy on the full HLE-Diamond question set (1,000 questions, released September 22, 2026), without tools, at the reasoning setting labeled "high" in HLE-Diamond's main results. No score other than the chart value or a qualifying score will count, even if no qualifying score is published. This includes scores on the original Humanity's Last Exam or HLE-Rolling, "reasoning max" or "with tools" results, Reasoning or Knowledge partition scores, values available only through an API, data file, or page source, scores from Scale AI's separate leaderboards, other evaluators, or the model's developer, and any score where there is reasonable doubt that it meets the conditions above. A model first appears on the site on the earlier of the date (ET) it is first displayed on the chart and the date (ET) a qualifying score for it is first published. If the chart value is used, the check described in the first paragraph takes place at 12:00 PM ET on the calendar date following the model's first display on the chart; if a qualifying score is used, it takes place at the end of the three-day period described above. If multiple qualifying models are added to the Humanity's Last Exam results on the same calendar date (ET), the model with the highest HLE-Diamond Accuracy will be used for resolution. Models added to the results on the calendar date following the initial qualifying model's first appearance will not be considered. If a model is first added to the Humanity's Last Exam results but is subsequently removed and not re-added, such that no HLE-Diamond Accuracy for it is available under these rules at the time of the check, its appearance will not qualify as added to the Humanity's Last Exam results. A qualifying model must be newly added to the Humanity's Last Exam results. Whether the model was previously released, publicly accessible, in beta, or otherwise available before appearing on the site is irrelevant for this market. In the case that the Resolution Source publishes data, sufficient to settle a Market, that is clearly erroneous and the result of technical or operational error, or of unauthorized interference with the Resolution Source or its data, the Market may remain open for a period of up to seven (7) calendar days (ET) from the time of the original release, in anticipation of a correction by the Resolution Source. If the Resolution Source publishes a corrected value within that period, that value will be eligible for resolution. If no corrected value is published within that period, Polymarket will issue a Clarification to determine whether the originally published value may be eligible for resolution, or whether other action is required to preserve the orderly functioning of the Market. The primary resolution source for this market is the official Humanity's Last Exam website found at https://agi.safe.ai/. If this resolution source is unavailable at the time of the check, this market will resolve based on the first subsequent instance at which the model's HLE-Diamond Accuracy becomes available. If it remains unavailable through the end of the seventh day after the qualifying model first appears on the site or if no qualifying model is added by June 30, 2027, 11:59 PM ET, this market will resolve to "No".