GPT-5.5 by
@OpenAI is now live in the Arena, landing across multiple leaderboards.
Here’s how it ranks by modality:
- Code Arena (agentic web dev): #9, a strong 50pt jump over GPT-5.4
- Document Arena (analysis & long-content reasoning): #6, on par with Sonnet 4.6
- Text Arena: #7, Math #3, Instruction Following: #8
- Expert Arena: #5
- Search Arena: #2
- Vision Arena: #5
Strong, well-rounded performance, especially in Code ( 50 pts vs GPT-5.4).
Congrats to
@OpenAI on the release. Full category breakdowns by modality in the thread.