Best xAI Models for Math & Science

Match · Updated July 2026

The best xAI model for math and science is Grok 4.5, scoring 93.1% on GPQA Diamond (graduate-level physics, chemistry and biology). Grok 4.20 (91.1%) and Grok 4.3 (90.1%) round out the top three.

93.1%GPQA

53.8Intelligence

$2.00Input /M

500KContext

AI models ranked by GPQA Diamond — graduate-level physics, chemistry and biology questions that can't be answered by lookup. The best LLMs for math, quantitative reasoning and hard-science work.

Frequently asked

What is the best xAI model for math?

The best xAI model for math and science is Grok 4.5, scoring 93.1% on GPQA Diamond (graduate-level physics, chemistry and biology). Grok 4.20 (91.1%) and Grok 4.3 (90.1%) round out the top three.

What's a good alternative to Grok 4.5?

Grok 4.20 (91.1%) is the closest alternative on this metric, followed by Grok 4.3 (90.1%). See the full ranking above for the tradeoffs.

How many xAI models are there?

modelgrep tracks 5 xAI models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by Grok 4.5. 3 of them qualify for this ranking.

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All rankings

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