# gpt-oss (slim)

> gpt-oss, a family of models by OpenAI, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and…

- Full: https://www.anchorterminal.com/tools/gpt-oss.md (~550 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/tools/gpt-oss.json · canonical https://www.anchorterminal.com/tools/gpt-oss
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

# gpt-oss

> 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: gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized...
- Some of these models are reviewed as part of GroqCloud: https://www.anchorterminal.com/tools/groq.md

## Models (2)

| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |
| --- | --- | --- | --- | --- | --- | --- |
| gpt-oss-120b | `openai/gpt-oss-120b` | 2025-08 | 131k | $0.037 | $0.17 | tools, structured output, reasoning |
| gpt-oss-20b | `openai/gpt-oss-20b` | 2025-08 | 131k | $0.018 | $0.09 | tools, structured output, reasoning, caching |

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

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