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GPT-5.5 Pro

OpenAI
1
1551
Elo Rating

LMSYS Chatbot Arena

1551
Elo Rating
#1
of 12 models

Elo rating from LMSYS Chatbot Arena, measuring model performance through head-to-head human preference comparisons.

View on LMSYS Arena

Model Info

VendorOpenAI
Release DateApr 23, 2026
LicenseProprietary
StatusFlagship Model

Raw Benchmarks

LMSYS Elo1551

Capabilities

Model CardVisionAudio

Data Sources

LMSYS Elo

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