OpenAI Released December 17, 2024 Synced Apr 19, 2026

OpenAI: o1

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...

Tool useVisionReasoning

Why it stands out

200K-token context window handles longer documents and multi-turn conversations without truncation.

Tool use support makes it viable for function-calling and agentic pipelines.

Multimodal input (vision) extends it beyond text-only workflows.

What to watch

Output pricing ($60/M) puts it at the high end — monitor generation length for cost control.

No benchmark score currently tracked — evaluate using task-specific testing alongside pricing and capability data.

Release timeline

Tracked events for OpenAI: o1.

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release

OpenAI: o1 entered the tracked catalog

December 17, 2024

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](https://openai.com/o1).

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