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Sonnet 4.5 vs GPT-5.1 (Medium)

Head-to-head OCR comparison · 99 battles · Updated August 24, 2026

Sonnet 4.5
GPT-5.1 (Medium)
Matchup39.4%(39W-60L)60.6%(60W-39L)
Overall41.0%(753W-855L)52.1%(1218W-853L)
ELO15571396
Rank#9#17

In head-to-head OCR battles, Sonnet 4.5 trails GPT-5.1 (Medium) with a 39.4% win rate across 99 matchups. Sonnet 4.5 currently ranks #9 on the OCR Arena leaderboard with an ELO rating of 1557, while GPT-5.1 (Medium) holds position #17 with an ELO of 1396. These rankings are based on blind community voting where users compare OCR outputs without knowing which model produced each result.

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Sonnet 4.5 vs GPT-5.1 (Medium) - OCR Model Comparison | OCR Arena