Claude Opus 4.6 is the stronger all-rounder.
Scores updated · 4 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.
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 4.6 pulls ahead
- Harvard-MIT high-school math contest problemsHMMT Feb. 2026+31.8points ahead
- US invitational high-school math exam problemsAIME 2026+14.2points ahead
Where QED-Nano pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 4 tests both models report. The winning score is in its model's colour; marks a score checked independently.
MathClaude Opus 4.6
- HMMT Feb. 2026Claude Opus 4.6 by 31.896.264.4+31.8
- AIME 2026Claude Opus 4.6 by 14.296.782.5+14.2
Other results2 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 2025Claude Opus 4.6 by 22.399.877.5+22.3
- HMMT Nov. 2025Claude Opus 4.6 by 21.396.375+21.3
Questions people ask
Which is better, Claude Opus 4.6 or QED-Nano?
Claude Opus 4.6 wins the one area where both have results: math. QED-Nano wins none.
How do you compare the two?
We use the 4 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 2 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.