Grok 3 Beta is the stronger all-rounder.
Scores updated · 12 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 Beta costs 10% 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 Beta pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+22.8points ahead
- College exam questions with charts, maps and diagramsMMMU+1points ahead
Where GPT-4o pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 12 tests both models report. The winning score is in its model's colour; marks a score checked independently.
Other results10 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 37.682.945.3+37.6
- Aider-PolyglotGrok 3 Beta by 22.630.753.3+22.6
- LiveCodeBenchGrok 3 Beta by 18.738.357+18.7
- AIR-Bench 2024GPT-4o by 11.162.451.3+11.1
- SimpleQAGrok 3 Beta by 5.438.243.6+5.4
- MMLU-ProGrok 3 Beta by 5.274.779.9+5.2
- anthropic_red_teamGPT-4o by 3.699.195.5+3.6
- EgoSchemaGrok 3 Beta by 2.372.274.5+2.3
- simple_safety_testsGPT-4o by 1.798.596.8+1.7
- XSTesttie97.396.4tie
Questions people ask
Which is better, GPT-4o or Grok 3 Beta?
Grok 3 Beta wins all two areas where both have results: reasoning and images and charts. GPT-4o wins none.
Which is cheaper?
GPT-4o costs $5.00 per million input tokens and $15.00 per million output tokens; Grok 3 Beta costs $3.00 and $15.00. That makes Grok 3 Beta about 10% cheaper for the same work.
How do you compare the two?
We use the 12 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 10 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.