Traictory tracks 52 models from OpenAI. The earliest entry is GPT-3.5 Turbo from March 2023; the most recent is GPT-6 Astra, released in September 2026. 27 of them shipped in the last twelve months.
The strongest OpenAI model in our data is GPT-5.1 Medium, with an average benchmark score of 98.0% across 1 published result, including 98.0% on AIME 2025. Across the 50 OpenAI models with benchmark data the average is 67.0%.
51 of the models are available through an API, with input pricing from $0.05 to $75 per million tokens; GPT-5 nano is the cheapest. The largest context window is 1M tokens on GPT-6 Astra. 43 of the 52 models accept images or other non-text input. 2 models ship with downloadable weights; the rest are API-only.
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OpenAI model catalog updated in 2026. See model comparisons and best models for coding.