Claude Opus 4 is the stronger all-rounder.
Scores updated · 7 tests both models report · How we compare
Where each one wins
Tests won in each of the one area 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 rests on a single test.
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.
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+10.7points ahead
Where Phi 4 Reasoning Plus pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 7 tests both models report. The winning score is in its model's colour; marks a score checked independently.
Other results6 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.
- AIME 2024Phi 4 Reasoning Plus by 33.148.281.3+33.1
- LiveCodeBenchClaude Opus 4 by 17.370.453.1+17.3
- HMMT Feb. 2025Claude Opus 4 by 13.36046.7+13.3
- MMLU-ProClaude Opus 4 by 10.686.676+10.6
- AIME 2025Phi 4 Reasoning Plus by 2.575.578+2.5
- IFEvalClaude Opus 4 by 2.587.484.9+2.5
Questions people ask
Which is better, Claude Opus 4 or Phi 4 Reasoning Plus?
Claude Opus 4 wins the one area where both have results: reasoning. Phi 4 Reasoning Plus wins none.
How do you compare the two?
We use the 7 benchmark tests both models have published scores on. The verdict counts the 1 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 6 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.