Live Odds · Updated October 24, 2026

Next Fable Model (5.2+): Humanity's Last Exam Debut?

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.

Last updated October 24, 2026, 06:19 PM ET with live prices from Polymarket. 24h volume: $1.3K.
Leading outcome
50%+
94%
A 94.5% price implies roughly a 94-in-100 chance, set by traders risking real money.
24H −3.1 pts7D −4.8 pts
50%+94.5%
55%+81.5%
Bid
94¢
Ask
95¢
Spread
1¢
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Range since September 29, 2026: 75.0% – 99.4% · Opened at 75.0%

Market facts

Event data
Event
Next Fable Model (5.2+): Humanity's Last Exam Debut?
Category
AI, Tech, Fable, Claude, Anthropic, AI Releases, AI Benchmarks, Claude Mythos
Scheduled end
June 30, 2027, 11:59 PM ET
Total volume
$15.8K
Volume (24h)
$1.3K
Liquidity
$6.3K
Markets
4
Leading outcome
50%+ — 94.5%
Resolution source
https://agi.safe.ai/

What is the current price?

Momentum & history

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%.

DayClose
Oct 16, 202699.1%
Oct 17, 202699.2%
Oct 18, 202699.2%
Oct 19, 202699.2%
Oct 20, 202699.2%
Oct 22, 202699.1%
Oct 23, 202697.6%

Who is favored to win?

Outcomes

50%+ is favored at 94.5%.

OutcomePriceImplied probability24h changeVolumeVolume share
50%+94¢94.5%-3.1 pts$5.9K37.3%
55%+82¢81.5%-2.0 pts$2.8K17.6%
60%+28¢28.5%-1.5 pts$1.9K12.3%
65%+27¢27.0%+5.0 pts$5.2K32.8%

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.

How much has been traded?

Volume

$15.8K has been traded on this event in total, $1.3K of it in the last 24 hours, across 4 markets.

When does this market resolve?

Rules

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/

What do the biggest traders hold?

Top holders

The largest current holder of the leading market holds 931 shares of Yes.

HolderOutcome heldSharesValue at current price
Piercing-FormationYes931$879
Required-HornNo576$32
Mundane-ComradeshipNo149$8
Grand-SpleenYes98$92
Belated-GlueNo94$5
Snappy-RoosterNo70$4
Direct-ChainstayNo66$4
Grim-GarageNo51$3
Cheerful-NucleotidaseYes41$38
Rowdy-TenementYes30$28

What are the latest trades?

Tape
BUY Yes — $811 at 87.1%SELL No — $377 at 78.2%SELL Yes — $239 at 83.1%
TimeOutcomeSidePriceSize
Oct 24, 06:27 PM ETYesSELL93.2%$3
Oct 24, 06:27 PM ETYesSELL93.6%$20
Oct 24, 06:14 PM ETYesSELL95.1%$20
Oct 24, 06:12 PM ETNoBUY4.8%$2
Oct 24, 05:34 PM ETYesSELL80.0%$8
Oct 24, 05:34 PM ETNoBUY17.0%$4
Oct 24, 05:34 PM ETNoBUY17.0%$3
Oct 24, 05:34 PM ETYesSELL83.0%$24
Oct 24, 05:34 PM ETYesSELL84.0%$41
Oct 24, 05:34 PM ETNoBUY16.0%$3

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Frequently asked questions

FAQ

What are the odds of Next Fable Model (5.2+): Humanity's Last Exam Debut??

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

How much money has been traded on Next Fable Model (5.2+): Humanity's Last Exam Debut??

$15.8K in total volume, with $1.3K traded in the last 24 hours across 4 markets.

When does Next Fable Model (5.2+): Humanity's Last Exam Debut? end?

The market is scheduled to end June 30, 2027, 11:59 PM ET. It resolves based on https://agi.safe.ai/.

What is the most likely outcome of Next Fable Model (5.2+): Humanity's Last Exam Debut?, according to Polymarket traders?

50%+, priced at 94.5% as of October 24, 2026, 06:19 PM ET. Prices are implied probabilities backed by real-money trading.

Browse the live odds index, today's biggest movers, and Whale Watch for the largest positions.

⚠️ Not financial advice: odds swing hard on news. Never bet money you can't afford to lose, and always read a market's resolution rules before trading.

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