All models
6 of 27 tracked · frontier · Openai · proprietary
GPT-5.6 Sol
released 2026-06-26
Flagship of OpenAI's GPT-5.6 three-model suite (Sol / Terra / Luna), released as a limited preview. Strong gains in coding, cybersecurity, biology, and long-horizon agentic work. Pricing: $5 / $30 per million input/output tokens.
- License
- proprietary
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 Pro
released 2025-08-07
Higher-reasoning variant of GPT-5, used for harder scientific and research tasks (e.g., immunology breakthroughs at NIH). Same 400K context as GPT-5; trades latency for depth.
- 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 Superseded by GPT-5.5 in April 2026.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