The two are evenly matched.GPT-4o is better at images and charts; Grok 3 Mini Beta at reasoning.
Scores updated · 13 tests both models report · How we compare
Where each one wins
Tests won in each of the two areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
Reasoning and images and charts rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Grok 3 Mini Beta costs 96% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where GPT-4o pulls ahead
- College exam questions with charts, maps and diagramsMMMU+2.8points ahead
Where Grok 3 Mini Beta pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+13.6points ahead
Every test, side by side
All 13 tests both models report. The winning score is in its model's colour; marks a score checked independently.
Other results11 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- HarmBenchGPT-4o by 25.782.957.2+25.7
- SimpleQAGPT-4o by 16.538.221.7+16.5
- AIR-Bench 2024GPT-4o by 8.962.453.5+8.9
- MMLU-ProGrok 3 Mini Beta by 4.274.778.9+4.2
- Aider-PolyglotGrok 3 Mini Beta by 430.734.7+4
- LiveCodeBenchGrok 3 Mini Beta by 3.238.341.5+3.2
- EgoSchemaGrok 3 Mini Beta by 2.172.274.3+2.1
- bbqGrok 3 Mini Beta by 1.695.196.7+1.6
- XSTestGrok 3 Mini Beta by 1.197.398.4+1.1
- simple_safety_teststie98.599.3tie
- anthropic_red_teamtie99.199.5tie
Questions people ask
Which is better, GPT-4o or Grok 3 Mini Beta?
GPT-4o and Grok 3 Mini Beta each win one of the two areas where both have results. GPT-4o wins images and charts; Grok 3 Mini Beta wins reasoning. Grok 3 Mini Beta costs 96% less.
Which is cheaper?
GPT-4o costs $5.00 per million input tokens and $15.00 per million output tokens; Grok 3 Mini Beta costs $0.30 and $0.50. That makes Grok 3 Mini Beta about 96% cheaper for the same work.
How do you compare the two?
We use the 13 benchmark tests both models have published scores on. The verdict counts the 2 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 11 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.