All models
4 of 24 tracked · frontier · Openai · 128K+ context
Source
GPT-5.5
released 2026-04-23
OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning.
- Context
- 400,000
- License
- proprietary
GPT-5
released 2025-08-07
OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.
- Context
- 400,000
- License
- proprietary
o3
released 2025-04-16
Reasoning-focused model in the o-series.
- Context
- 200,000
- License
- proprietary
GPT-4.1
released 2025-04-14
- Context
- 1,000,000
- License
- proprietary