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AI IntelligenceJun 13, 2026AI Intelligence
Article

Anthropic's Claude Fable 5 achieves 88% accuracy on the hardest math problems – a massive leap from below 10% earlier in 2026.

GPT-5.5 reaches about 75%. The pace of AI math improvement is accelerating rapidly.

Data Cube AI EditorialSource: The Decoder
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Source Brief

Anthropic's Claude Fable 5 achieves 88% accuracy on the hardest math problems – a massive leap from below 10% earlier in 2026. GPT-5.5 reaches about 75%. The pace of AI math improvement is accelerating rapidly.

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