o1 (2024-12-17)
OpenAI · 2024-12-17
o1-2024-12-17 is OpenAI's production o1 API checkpoint, released on December 17, 2024 with image input, a 200,000-token context window, function calling, developer messages, Structured Outputs, and configurable reasoning effort. OpenAI identifies it as a newly post-trained version of the o1 model released in ChatGPT on December 5; observations that cannot establish which version was evaluated are retained separately.