The probability that Anthropic will extend Claude Fable 5 paid-plan access by July 19 declined sharply over the past 24 hours on Polymarket, sliding 18.5 percentage points from 63.0% to 44.5%. This sizable move in the YES contract price contrasts with whale activity, which diverged from the price trend as large investors added net exposure to the YES side during the same period.
Polymarket recorded $40K in volume on this market over the last day, reflecting moderate trading interest amid the price drop. The divergence between whale flow and price movement signals a complex market dynamic where retail or other traders pushed the odds down while whales increased their YES bets.
This pattern suggests differing interpretations of Anthropic’s intentions around Claude Fable 5’s paid-plan access extension. While broader market sentiment moved toward a lower likelihood, the whale activity implies some continued confidence in an extension before the July 19 deadline.
The combined price and flow data highlight a contested market view, with whales potentially anticipating a reversal or valuing information not yet reflected in the tape. This tension underscores the evolving uncertainty regarding Anthropic’s subscription plans in the near term.
| Market | Will Anthropic extend Claude Fable 5 paid-plan access again by July 19? |
|---|---|
| Market ID | 2898504 |
| 24h price change | +18.5 pp |
| YES now (PM Breaking) | 44.5% |
| YES ~24h ago (est.) | 63.0% |
| YES (Polydata overview) | — |
| Whale net flow (24h) | $0 |
| Whale buy / sell (24h) | — / — |
| Unique whales (24h) | — |
| Volume 24h (PM) | $40K |
| Unique traders (Polydata) | — |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-17. 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.