gpt-oss — Open-weight reasoning model

OpenAI’s open-weight reasoning models; the smaller one runs on a good laptop. By OpenAI. Where it runs: Runs locally, API. Pricing: Open source, Pay per token.

Frequently asked questions

What is gpt-oss best for?

Privacy & self-hosting: Local reasoning model with tool use. Low cost: Free locally and very cheap hosted.

How do I write better prompts for gpt-oss?

Give gpt-oss a clear goal, the relevant files or context, constraints, and acceptance criteria. Pregoo's Prompt Builder scores your prompt and estimates its token cost.

What should I watch out for with gpt-oss?

Smaller than frontier models; keep tasks focused.

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