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April 23, 2026·AI & Tech·Older · 2mo ago

AI Model Wars: OpenAI Surges 4¢ as Anthropic Lead Narrows Into Month-End

Name: SimpleFunctions
Author: SimpleFunctions

The 'best AI model end of April' market saw OpenAI gain 4¢ to 28¢ while Anthropic fell 4¢ to 70¢ — a notable tightening of the gap. GPT-5.5 release by April 23 missed its deadline (down 6¢), but the April 30 deadline remains at 97¢. The race for AI model supremacy is the dominant AI-tech story.

Key takeaways

01
The 'best AI model end of April' market saw OpenAI gain 4¢ to 28¢ while Anthropic fell 4¢ to 70¢ — a notable tightening of the gap.
02
GPT-5.5 release by April 23 missed its deadline (down 6¢), but the April 30 deadline remains at 97¢.
03
The race for AI model supremacy is the dominant AI-tech story.

Full analysis

The AI model competition markets are seeing their most notable moves in weeks. Anthropic has dominated the 'best AI model end of April' race, with Kalshi's market showing Claude at 85¢ (KXLLM1-26APR25-ANTH) and Polymarket showing Anthropic at 70¢ (0x6ac0f239c53763cc90). But today's action shows a meaningful shift: OpenAI gained 4¢ to 28¢ on $275K volume (0xf105ea1a8360554061) while Anthropic dropped 4¢ to 70¢.

The catalyst appears to be GPT-5.5 release speculation. The 'GPT-5.5 released by April 23' contract (0xbcf382ddb2bb0333cc) collapsed 5¢ to 0¢ — the April 23 deadline has passed without release. However, 'GPT-5.5 released by April 30' (0x0f461cb384aa6289cc) remains at 97¢ with $39K volume, suggesting traders still expect a release before month-end. And 'GPT-5.5 released by April 22' (another contract) is also at 0¢.

If OpenAI releases GPT-5.5 in the next week with benchmark-beating performance, Anthropic's 70¢ contract could fall sharply. The 8¢ Anthropic-to-OpenAI spread has tightened from what was likely a 10-12¢ gap.

Other notable AI market observations: DeepSeek V4 released by April 30 (0xe5883e093e642062ac) is at 83¢ (+3¢) — another potential model release catalyst. Claude 5 by April 30 (0x3acb42d4a4da859a82) is at just 1¢, confirming Claude 5 is not coming this month.

Kalshi's 'Top AI model this month' (KXTOPMODEL-26APR30-C) shows Anthropic at 76¢, with OpenAI the primary challenger. The June-end AI model market on Polymarket shows Anthropic at 51¢ (down 5¢) and Google at 28¢ (up 1¢) — the longer-dated market is much more competitive.

For traders: the key near-term trade is whether GPT-5.5 releases before April 30 and moves the needle on the 'best AI model' assessment. If it does, Anthropic's 70¢ contract offers significant downside capture. The 3¢ DeepSeek V4 April release surprise is another wildcard to watch.