The probability that Anthropic will extend Claude Fable 5 paid-plan access by July 19 surged 32.5 percentage points over the past 24 hours on Polymarket, rising from 38.5% to 71.0%. This significant price move reflects a rapid shift in market sentiment within a single day.
Whale activity mirrored this sharp increase, with large traders adding net positions on the YES side, confirming the upward price momentum. The alignment between whale flow and the price suggests coordinated conviction behind the rising odds rather than a divergence between retail and institutional betting.
The market recorded $16K in volume during this 24-hour window, indicating robust trading interest as participants recalibrated their expectations about Anthropic’s decision timeline. The contract’s repricing signals a growing consensus that an extension of Claude Fable 5 paid-plan access is increasingly likely before the July 19 deadline.
This combined surge in price and whale flow reinforces the market’s confidence in the extension outcome, marking a notable shift in sentiment around this event in the Polymarket ecosystem.
| Market | Will Anthropic extend Claude Fable 5 paid-plan access again by July 19? |
|---|---|
| Market ID | 2898504 |
| 24h price change | +32.5 pp |
| YES now (PM Breaking) | 71.0% |
| YES ~24h ago (est.) | 38.5% |
| YES (Polydata overview) | — |
| Whale net flow (24h) | $0 |
| Whale buy / sell (24h) | — / — |
| Unique whales (24h) | — |
| Volume 24h (PM) | $16K |
| Unique traders (Polydata) | — |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-16. Data: Polydata API v3. On-chain figures are public. Realized PnL is computed over resolved markets only and excludes open positions, so it is conservative versus the Polymarket UI. This is not investment advice.