# R1 (slim)

> R1, a family of models by DeepSeek, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. May 28th update to the original DeepSeek R1 Performance on par with OpenAI o1, but open-sourced and with fully…

- Full: https://www.anchorterminal.com/tools/deepseek-r1.md (~500 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/tools/deepseek-r1.json · canonical https://www.anchorterminal.com/tools/deepseek-r1
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

# R1

> 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 DeepSeek
- 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: May 28th update to the \[original DeepSeek R1\](/deepseek/deepseek-r1) Performance on par with \[OpenAI o1\](/openai/o1), but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active...

## Models (2)

| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |
| --- | --- | --- | --- | --- | --- | --- |
| R1 0528 | `deepseek/deepseek-r1-0528` | 2025-05 | 163k | $0.50 | $2.15 | tools, structured output, reasoning, caching |
| R1 | `deepseek/deepseek-r1` | 2025-01 | 64k | $0.70 | $2.50 | tools, reasoning |

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

- JSON: https://www.anchorterminal.com/api/v1/tools/deepseek-r1.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming