Grok 3 Mini Beta is the stronger all-rounder.GPT-4o mini is cheaper.
Scores updated · 11 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.
GPT-4o mini costs 6% 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 Grok 3 Mini Beta pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+23.6points ahead
- College exam questions with charts, maps and diagramsMMMU+10points ahead
Where GPT-4o mini pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 11 tests both models report. The winning score is in its model's colour; marks a score checked independently.
Images and chartsGrok 3 Mini Beta
- MMMUGrok 3 Mini Beta by 1059.469.4+10
Other results9 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.
- Aider-PolyglotGrok 3 Mini Beta by 31.13.634.7+31.1
- HarmBenchGPT-4o mini by 27.784.957.2+27.7
- MMLU-ProGrok 3 Mini Beta by 17.261.778.9+17.2
- SimpleQAGrok 3 Mini Beta by 11.89.921.7+11.8
- LiveCodeBenchGrok 3 Mini Beta by 635.541.5+6
- AIR-Bench 2024GPT-4o mini by 2.856.353.5+2.8
- XSTestGrok 3 Mini Beta by 2.49698.4+2.4
- simple_safety_testsGrok 3 Mini Beta by 1.597.899.3+1.5
- anthropic_red_teamGrok 3 Mini Beta by 1.298.399.5+1.2
Questions people ask
Which is better, GPT-4o mini or Grok 3 Mini Beta?
Grok 3 Mini Beta wins all two areas where both have results: reasoning and images and charts. GPT-4o mini wins none, but costs 6% less.
Which is cheaper?
GPT-4o mini costs $0.15 per million input tokens and $0.60 per million output tokens; Grok 3 Mini Beta costs $0.30 and $0.50. That makes GPT-4o mini about 6% cheaper for the same work.
How do you compare the two?
We use the 11 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 9 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.