OpenAI Open Models

Open-weight LLMs for reasoning and agentic developer tasks

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OpenAI's gpt-oss-120b and gpt-oss-20b are Apache 2.0 licensed open-weight language models optimized for reasoning, agentic workflows, and general developer use cases. They can be self-hosted or fine-tuned, making them suitable for teams needing full control over deployment. These models bring OpenAI-quality capabilities to the open-source ecosystem.

At a glance

Company
OpenAI
Pricing
free
API available
Yes
Self-hostable
Yes
Launched
2025-08
Last verified
2026-05-11

Capabilities

reasoningagentic-tasksfine-tuningself-hostinglong-contextopen-weights

Categories

developer-platformsagentscode

Alternatives

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