OpenAI's smartest frontier model for complex professional work, with a 1M token context window and natively omnimodal architecture.
SOTAFoundationGpt-5.5-2026-04-23VerifiedFeatured
- Context
- 1,000,000
- Release
- Apr 23, 2026
- Open source
- No
- Commercial use
- Allowed
- Developer
- OpenAI
- Fine-tunable
- No
View Model
Added 24 days ago