As of October 24, 2026, 06:31 PM ET, Polymarket traders price 50%+ at 94.5% in Next Fable Model (5.2+): Humanity's Last Exam Debut? — $15.8K traded so far.
The leading outcome, 50%+, is priced at 94.5%.
Price changes for the leading market — 24 hours: -3.1 pts; past week: -4.8 pts.
Since September 29, 2026, 50%+ has traded between 75.0% and 99.4%. It opened at 75.0% and last traded at 97.6%.
| Day | Close |
|---|---|
| Oct 16, 2026 | 99.1% |
| Oct 17, 2026 | 99.2% |
| Oct 18, 2026 | 99.2% |
| Oct 19, 2026 | 99.2% |
| Oct 20, 2026 | 99.2% |
| Oct 22, 2026 | 99.1% |
| Oct 23, 2026 | 97.6% |
50%+ is favored at 94.5%.
| Outcome | Price | Implied probability | 24h change | Volume | Volume share |
|---|---|---|---|---|---|
| 50%+ | 94¢ | 94.5% | -3.1 pts | $5.9K | 37.3% |
| 55%+ | 82¢ | 81.5% | -2.0 pts | $2.8K | 17.6% |
| 60%+ | 28¢ | 28.5% | -1.5 pts | $1.9K | 12.3% |
| 65%+ | 27¢ | 27.0% | +5.0 pts | $5.2K | 32.8% |
See the full live book for this market on Polymarket
The leading market's spread is 1¢ (bid 94¢ / ask 95¢) — a tighter spread means cheaper round-trip trading.
$15.8K has been traded on this event in total, $1.3K of it in the last 24 hours, across 4 markets.
This market is scheduled to end June 30, 2027, 11:59 PM ET.
This market will resolve to "Yes" if the next Anthropic Claude Fable model (5.2+) added to the Humanity's Last Exam results at https://agi.safe.ai/ has an HLE 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 have a name or model identifier that includes "Fable" and be designated as version 5.2 or higher, regardless of capitalization or surrounding prefixes, suffixes, dates, or descriptors. For example, a version 5.2 or higher named in the same manner as Claude Fable 5 or Claude Fable 5.1 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 5.2, such as Claude Fable 5.1 or Claude Mythos 5.1, will not qualify. The percentage displayed as "HLE Accuracy" for the model in its result card on the "AI Progress on Humanity's Last Exam" chart at https://agi.safe.ai/ will be used to resolve this market. This market will resolve solely based on the displayed HLE Accuracy, regardless of the model's Calibration Error, chart position, other configuration scores, or any underlying granular or unrounded data presented elsewhere. … (condensed)
Resolution source: https://agi.safe.ai/
The largest current holder of the leading market holds 931 shares of Yes.
| Holder | Outcome held | Shares | Value at current price |
|---|---|---|---|
| Piercing-Formation | Yes | 931 | $879 |
| Required-Horn | No | 576 | $32 |
| Mundane-Comradeship | No | 149 | $8 |
| Grand-Spleen | Yes | 98 | $92 |
| Belated-Glue | No | 94 | $5 |
| Snappy-Rooster | No | 70 | $4 |
| Direct-Chainstay | No | 66 | $4 |
| Grim-Garage | No | 51 | $3 |
| Cheerful-Nucleotidase | Yes | 41 | $38 |
| Rowdy-Tenement | Yes | 30 | $28 |
| Time | Outcome | Side | Price | Size |
|---|---|---|---|---|
| Oct 24, 06:27 PM ET | Yes | SELL | 93.2% | $3 |
| Oct 24, 06:27 PM ET | Yes | SELL | 93.6% | $20 |
| Oct 24, 06:14 PM ET | Yes | SELL | 95.1% | $20 |
| Oct 24, 06:12 PM ET | No | BUY | 4.8% | $2 |
| Oct 24, 05:34 PM ET | Yes | SELL | 80.0% | $8 |
| Oct 24, 05:34 PM ET | No | BUY | 17.0% | $4 |
| Oct 24, 05:34 PM ET | No | BUY | 17.0% | $3 |
| Oct 24, 05:34 PM ET | Yes | SELL | 83.0% | $24 |
| Oct 24, 05:34 PM ET | Yes | SELL | 84.0% | $41 |
| Oct 24, 05:34 PM ET | No | BUY | 16.0% | $3 |
As of October 24, 2026, 06:19 PM ET, the leading outcome is 50%+ at 94.5%. Next is 55%+ at 81.5%. See the live book on Polymarket: https://polymarket.com/event/next-fable-model-5pt2-humanitys-last-exam-debut-20260928?via=bro
$15.8K in total volume, with $1.3K traded in the last 24 hours across 4 markets.
The market is scheduled to end June 30, 2027, 11:59 PM ET. It resolves based on https://agi.safe.ai/.
50%+, priced at 94.5% as of October 24, 2026, 06:19 PM ET. Prices are implied probabilities backed by real-money trading.
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