Anthropic Dethroned OpenAI as Best AI Model — Markets Moved Massively Today
Anthropic surged to 93¢ (+23¢) for best AI model end of April while OpenAI crashed to 6¢ (-23¢) in one of the largest single-day AI prediction market moves ever seen. Kalshi's KXLLM1 also shows Anthropic at 95¢. This repricing likely reflects a new Claude release or major benchmark performance.
Key takeaways
- 01
Anthropic surged to 93¢ (+23¢) for best AI model end of April while OpenAI crashed to 6¢ (-23¢) in one of the largest single-day AI prediction market moves ever seen.
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This repricing likely reflects a new Claude release or major benchmark performance.
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Today's prediction market action in AI is extraordinary.
Full analysis
Today's prediction market action in AI is extraordinary. The 'Which company has the best AI model end of April?' markets on Polymarket experienced one of the most dramatic single-day reversals in the dataset: Anthropic surged +23¢ to 93¢ (ticker 0x6ac0f239c53763cc90, $184k volume) while OpenAI collapsed -23¢ to just 6¢ (ticker 0xf105ea1a8360554061, $476k volume — the highest volume AI market today). On Kalshi, KXLLM1-26APR25-ANTH sits at 95¢ for Anthropic as best AI in April, with KXLLM1-26APR25-OPEN at just 3¢. The magnitude and symmetry of this move (+23¢ Anthropic, -23¢ OpenAI) strongly suggests a specific triggering event — likely a new Claude model release, a major benchmark result, or a competitive evaluation that came out today. Supporting this, the 'Which company has the #1 AI model end of April? (Style Control On): Anthropic' market is at 91¢ (+19¢), and the third-best AI model market now shows Anthropic at 53¢ (+25¢). The DeepSeek V4 release markets have already resolved at 99-100¢, confirming DeepSeek V4 is out but apparently not competitive enough to challenge Anthropic's new position. For traders: the Anthropic coding model market also spiked to 89¢ (+5¢), and the best Chinese AI company is now Alibaba at 94¢ (+23¢) — suggesting Alibaba may have also made a strong showing. The KXTOPMODEL-26APR30 on Kalshi shows Anthropic at 82¢. If you believe this Anthropic lead will persist through June, there are 'which company has best AI model end of June' markets where Anthropic sits at 51¢ (+1¢) with significant room to run. Key contracts: 0x6ac0f239c53763cc90 (Anthropic April, 93¢), KXLLM1-26APR25-ANTH (95¢), 0xf105ea1a8360554061 (OpenAI April, 6¢).
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