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OpenAI: o1

openai/o1

Released Dec 17, 2024Knowledge cutoff Oct 31, 2023200,000 context
$15/M input tokens$60/M output tokens

The latest and strongest model family from OpenAI, o1 is designed to spend more time thinking before responding. The o1 model series is trained with large-scale reinforcement learning to reason using chain of thought.

The o1 models are optimized for math, science, programming, and other STEM-related tasks. They consistently exhibit PhD-level accuracy on benchmarks in physics, chemistry, and biology. Learn more in the launch announcement.

Recent activity on o1

Total usage per day on OpenRouter

Prompt
2.66M
Completion
295K
Reasoning
165K

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.