Claude Opus 4 is the stronger all-rounder.Grok 3 Mini Beta is cheaper.
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 Mini Beta costs 99% 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 Claude Opus 4 pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+13.4points ahead
- College exam questions with charts, maps and diagramsMMMU+4.3points ahead
Where Grok 3 Mini Beta 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.
- Aider-PolyglotClaude Opus 4 by 3670.734.7+36
- HarmBenchClaude Opus 4 by 34.591.757.2+34.5
- AIR-Bench 2024Claude Opus 4 by 32.285.753.5+32.2
- LiveCodeBenchClaude Opus 4 by 28.970.441.5+28.9
- MMLU-ProClaude Opus 4 by 7.786.678.9+7.7
- XSTestGrok 3 Mini Beta by 1.49798.4+1.4
- SimpleQAClaude Opus 4 by 1.122.821.7+1.1
- simple_safety_teststie10099.3tie
- anthropic_red_teamtie98.999.5tie
- bbqtie97.196.7tie
Questions people ask
Which is better, Claude Opus 4 or Grok 3 Mini Beta?
Claude Opus 4 wins all two areas where both have results: reasoning and images and charts. Grok 3 Mini Beta wins none, but costs 99% less.
Which is cheaper?
Claude Opus 4 costs $15.00 per million input tokens and $75.00 per million output tokens; Grok 3 Mini Beta costs $0.30 and $0.50. That makes Grok 3 Mini Beta about 99% 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.