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GPT 5.4 Pro Scores 38% on FrontierMath Tier 4 Benchmark

Deedy

GPT 5.4 Pro hit 38% on the hardest math benchmark: FrontierMath Tier 4. It is 50 research-level math problems made by mathematicians. It can take experts weeks to solve. 99.9% of humans can even understand the problem. A year ago, the best was 2% (o3). Insanely impressive.

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