The two are evenly matched.Atria Dawn is better at agents; Claude Opus 4.8 at coding.
Scores updated · 6 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.
Agents 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 4.8 pulls ahead
- Long, multi-file coding tasks in real codebasesSWE-bench Pro+9.6points ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+6.3points ahead
Where Atria Dawn pulls ahead
- Finds hard-to-locate facts by browsing the webBrowseComp+8.2points ahead
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.
CodingClaude Opus 4.8
- SWE-bench ProClaude Opus 4.8 by 9.659.669.2+9.6
- Terminal-Bench 2.1Claude Opus 4.8 by 6.378.384.6+6.3
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.
- WideSearchAtria Dawn by 981.972.9+9
- CyberGymAtria Dawn by 7.786.578.8+7.7
- DeepSearchQA (F1)Atria Dawn by 2.99693.1+2.9
Questions people ask
Which is better, Atria Dawn or Claude Opus 4.8?
Atria Dawn and Claude Opus 4.8 each win one of the two areas where both have results. Atria Dawn wins agents; Claude Opus 4.8 wins coding.
Which is better for coding?
Claude Opus 4.8. It wins 2 of the 2 coding tests both models report; Atria Dawn 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.