Phi 4 Reasoning Plus is the stronger all-rounder.
Scores updated · 8 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 Phi 4 Reasoning Plus pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+12.9points ahead
Where Claude 3.5 Sonnet pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 8 tests both models report. The winning score is in its model's colour; marks a score checked independently.
ReasoningPhi 4 Reasoning Plus
- GPQA DiamondPhi 4 Reasoning Plus by 12.95668.9+12.9
Other results7 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 2025Phi 4 Reasoning Plus by 74.73.378+74.7
- AIME 2024Phi 4 Reasoning Plus by 65.31681.3+65.3
- HMMT Feb. 2025Phi 4 Reasoning Plus by 451.746.7+45
- LiveCodeBenchPhi 4 Reasoning Plus by 20.332.853.1+20.3
- IFEvalClaude 3.5 Sonnet by 1.686.584.9+1.6
- MMLU-ProClaude 3.5 Sonnet by 1.677.676+1.6
- Arena Hardtie79.279tie
Questions people ask
Which is better, Claude 3.5 Sonnet or Phi 4 Reasoning Plus?
Phi 4 Reasoning Plus wins the one area where both have results: reasoning. Claude 3.5 Sonnet wins none.
How do you compare the two?
We use the 8 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 7 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.