Claude Opus 4.5 is the stronger all-rounder.
Scores updated · 6 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.
Every test, side by side
All 6 tests both models report. The winning score is in its model's colour; marks a score checked independently.
Images and chartsClaude Opus 4.5
Other results3 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.
- LiveCodeBenchClaude Opus 4.5 by 29.98757.1+29.9
- AIME 2025Claude Opus 4.5 by 28.792.864.1+28.7
- MATH-VisionClaude Opus 4.5 by 8.477.168.7+8.4
Questions people ask
Which is better, Claude Opus 4.5 or Seed-1.5-VL?
Claude Opus 4.5 wins the one area where both have results: images and charts. Seed-1.5-VL wins none.
How do you compare the two?
We use the 6 benchmark tests both models have published scores on. The verdict counts the 3 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 3 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.