# o1 (slim)

> o1, a family of models by OpenAI, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. 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…

- Full: https://www.anchorterminal.com/tools/openai-o1.md (~450 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/tools/openai-o1.json · canonical https://www.anchorterminal.com/tools/openai-o1
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

# o1

> Indexed, not reviewed: facts from OpenRouter and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: model family, by OpenAI
- Category: Model APIs & inference (https://www.anchorterminal.com/categories/inference.md)
- Listed because: OpenRouter lists it, with prices from the providers that serve it.
- What OpenRouter says: 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...

## Models (1)

| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |
| --- | --- | --- | --- | --- | --- | --- |
| o1 | `openai/o1` | 2024-12 | 200k | $15 | $60 | tools, structured output, reasoning, caching, file, image |

Prices and limits as OpenRouter lists them; a provider's own price can differ.

- JSON: https://www.anchorterminal.com/api/v1/tools/openai-o1.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming