built by extend.ai

Sonnet 4.5 vs Gemini 2.5 Flash

Head-to-head OCR comparison · 95 battles · Updated March 28, 2026

Gemini 2.5 Flash
Sonnet 4.5
Matchup60.0%(57W-38L)40.0%(38W-57L)
Overall52.9%(1263W-891L)40.9%(680W-767L)
ELO16371521
Rank#5#12

In head-to-head OCR battles, Gemini 2.5 Flash outperforms Sonnet 4.5 with a 60.0% win rate across 95 matchups. Gemini 2.5 Flash currently ranks #5 on the OCR Arena leaderboard with an ELO rating of 1637, while Sonnet 4.5 holds position #12 with an ELO of 1521. These rankings are based on blind community voting where users compare OCR outputs without knowing which model produced each result.

Try it yourself

Test these models on your own documents in the playground.

Open Playground →

Other comparisons