Anthropic Dethrones OpenAI: AI Model Rankings See Major Reshuffling
Anthropic's Claude surged to 94¢ (up 5¢) as best AI model for April while OpenAI dropped to 6¢ (down 4¢). This is a significant reversal in the AI leadership narrative that traders have been watching all month. MegaETH launch valuations are also beating expectations with the $1B FDV contract at 90¢.
Key takeaways
- 01
Anthropic's Claude surged to 94¢ (up 5¢) as best AI model for April while OpenAI dropped to 6¢ (down 4¢).
- 02
This is a significant reversal in the AI leadership narrative that traders have been watching all month.
- 03
MegaETH launch valuations are also beating expectations with the $1B FDV contract at 90¢.
Full analysis
The prediction market verdict is in for April 2026: Anthropic has firmly taken the top AI model crown. The 'best AI end of April: Anthropic' contract (0x6ac0f239c53763cc90) jumped 5¢ to 94¢ on Polymarket with $104k in volume, while the 'best AI end of April: OpenAI' contract (0xf105ea1a8360554061) dropped 4¢ to 6¢ on $307k volume — the highest volume in the AI category today. This is not a small signal. With over $400k combined flowing through these two contracts in one session, the market is making a strong directional bet. The Kalshi 'Best AI in May 2026' contract (KXLLM1-26MAY02-ANTH) sits at 90¢, confirming the view extends beyond April. The 'Best AI in Apr 2026' Kalshi contract (KXLLM1-26APR30-A) is at 91¢.
For AI model traders, the key question is whether this reflects the recently released Claude 3.7 or 4.0 benchmark performance. The Chatbot Arena / LMSYS style contests are the resolution mechanism, and the market is pricing near-certainty that Anthropic leads. OpenAI has one week to release GPT-5 or a superior model to close this gap — at 6¢, that's a 6% probability the market assigns to an OpenAI comeback this month.
In parallel, MegaETH's token launch is showing strong FDV with the '>$1B' contract at 90¢ (0x940f01421649348b09, up 4¢) and '>$600M' at 98¢ (0x742fec2bf8157b780b). The '>$1.5B' contract is at 57¢ (up 4¢), suggesting the market expects FDV to settle between $1B and $1.5B. Traders looking to play the AI theme should focus on KXLLM1-26MAY02-ANTH for the monthly view and monitor the OpenAI contract for any reversal catalyst.
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