1. Models
  2. Claude Opus 5 vs Claude Sonnet 5

4 charts

Claude Opus 5 vs Claude Sonnet 5

Every chart we tracked that puts them side by side. Open one to see the test, the source and how far it travelled.

Claude Opus 5Claude Sonnet 5
Artificial Analysis small multiples: AI model intelligence index
Artificial Analysis·Sep 2026
AI model intelligence index
430.7K views3.4K likes0.9% eng.
Data
Epoch AI scatter plot: AI model ECI trends
Epoch AI·Oct 2026
AI model ECI trends
165K views868 likes0.6% eng.
Data
Arena benchmark bar chart: Claude Opus WebDev Arena27x
Arena·Oct 2026
Claude Opus WebDev Arena
40.9K views540 likes1.6% eng.
Data
Arena scatter plot: AI model cost performance17x
Arena·Oct 2026
AI model cost performance
40.5K views331 likes0.9% eng.
Data

Questions people ask

Is Claude Opus 5 better than Claude Sonnet 5?

4 charts we tracked put Claude Opus 5 and Claude Sonnet 5 side by side, from Artificial Analysis, Epoch AI, Arena. Which wins depends on the benchmark; each chart below shows its own test.