PolymarketAI / TechDevelopingUpdated 18m ago

Next Fable Model (5.2+) released by October 31, 2026?

As of Oct 11, 2026, 4:14 PM ET, Polymarket priced this market at 70.9% (little changed over 24 hours). It had $814.2 traded in the past 24 hours, $11.3K of order-book liquidity and a bid-ask spread of 0.3 pts. probcast.co rates the support behind this price as moderate.

Market probability
70.9%
Little changed over 24 hours
Not live — snapshot Oct 11, 4:14 PM ET

Thin market where small orders can move the price, traded by a small group of accounts.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Moderate

Consensus stability

Stable

Contract clarity

High

Can you trust this price?

Two different questions: how hard the price is to move, and whose trading set it.

Market capacity

How hard is it to move this price?

ThinTight spread

Order-book liquidity

$11.3K

Bid-ask spread

0.3 pts

24h volume

$814.2

Total volume

$110.5K

It would take roughly $3.6K of buying to move the price up by ~5 pts.

Little money on the book — a modest order can move this price, so treat swings with care.

Who's trading

Whose opinion is this price?

A few accounts
33%of the traded money came from the single largest account

Accounts

97

Trades

200

over 5 days

Largest order

$13.7K

$41.6K traded across these 200 trades (last 5 days).

A small group of accounts did most of the trading — neither one whale nor a broad crowd.

Recent trade activity$41.6K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to "Yes" if Anthropic's next Fable model (5.2+) is made available to the general public between market creation and the specified date (ET). Otherwise, this market will resolve to "No".

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

This market will resolve to "Yes" if Anthropic's next Fable model (5.2+) is made available to the general public between market creation and the specified date (ET). 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. A qualifying model must be launched and publicly accessible, including via open beta or open rolling waitlist signups. A closed beta or any form of private access will not suffice. The release must either be clearly defined and publicly announced by Anthropic as accessible to the general public, or otherwise be made publicly accessible and explicitly labeled on the company's official website. Labeling errors, placeholder text, or version names displayed on the website that do not correspond to a model that is actually accessible to the general public will not qualify. The primary resolution source for this market will be official information from Anthropic, with additional verification from a consensus of credible reporting.

What could move this market next?

  • The market's deadline arrivesOctober 31, 2026 at 7:59 PM ET

    The contract must resolve based on what has happened by this date.

Derived from the contract's own mechanics as of Oct 11, 4:32 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±15 pts.

Thin marketLegacy movement classifier: watch

What's happening

low classifier confidence
Thin market

Thin book and/or wide spread. Small orders can move this price disproportionately, so any single print is noisy and easily overread.

  • Thin book and/or wide spread.

Read with caution —Read the latest price with caution; conditions make it an unreliable summary right now.

More details — reliability score, dynamics, durability
Reliability score
28Low
Where the price path tends to go next486 observed
  • Choppy / mean-reverting91%
  • Stable consensus5%
  • Illiquid / quiet2%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life —
PredictabilityStable

Secondary read: leaning toward Stale price.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Market data

24h volume

$814.2

Liquidity

$11.3K

Total volume

$110.5K

Category
AI / Tech
Venue
Polymarket
Open interest
—
Spread
0.3 pts
Best bid
70.7%
Best ask
71.0%
Resolves
Oct 31, 2026
Change (pts)1H0.06H0.024H0.07D0.0

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