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Anthropic have the best AI model at the end of December 2026 priced at 51.5% on Polymarket, up 4 points, on $368K traded

PredictionBubbles' movers board lists the December-dated best-model contract among its upward tech moves, in a tech category distinct from the lead — it has not appeared…

Anthropic’s contract to have the best AI model at the end of December 2026 was priced at 51.5% on Polymarket, up 4 probability points, with $368K traded. PredictionBubbles listed the contract among its upward-moving technology markets.

The figures accompanied an update published Oct 19, 2026, at 6:24 PM ET. PredictionBubbles’ supplied board snapshot recorded venue data as of 19 Oct 2026, 22:16 UTC.

A repricing, not a model assessment

According to PredictionBubbles, its movers board measures changes over 24 hours and refreshes every 15 minutes using prices from Polymarket and Kalshi. Rankings reflect probability-point changes rather than relative percentage gains; trading volume and liquidity provide context but do not determine placement.

The board covered 2,041 markets with lifespans longer than 14 days. Only open contracts with a valid day-earlier comparison qualified, according to PredictionBubbles. That makes the Anthropic move a measure of changing market expectations, not an independent evaluation of its AI models.

What the supplied data leaves open

The supplied material does not identify a catalyst for Anthropic’s rise or specify the benchmark and resolution criteria that determine which company has the “best” model. It also does not establish the period covered by the contract’s $368K traded figure.

What it means for prediction markets

  • A narrow lean toward Anthropic: The 51.5% price places the contract just above an even-chance market estimate for the end of December 2026.
  • Direction is clearer than cause: The 4-point increase establishes upward repricing over 24 hours, but the supplied reporting does not explain what drove it.
  • Volume is not depth: The $368K traded figure provides activity context without establishing current liquidity or how much trading accompanied the move.
  • Resolution details remain important: Without the contract’s benchmark and settlement rules, the price should not be treated as a general verdict on AI-model leadership.
PredictionMarketsPolymarket

Sources & attribution

  1. [1]Predictionbubbles (predictionbubbles.net)https://predictionbubbles.net/markets/movers/

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