GPT-OSS 20B
12 GB • 131k ctx • Q4_K_M
← All models4K 15 GB 8K 16 GB 16K 17 GB 33K 18 GB 66K 19 GB 131K 20 GB
OpenAI2025
GPT-OSS
Open-weight reasoning
OpenAI’s first open weights since GPT-2. Reasoning, agents, and function calling you can run at home. 20B for a strong desktop, 120B when you have the RAM.
- Fits fromDesktop · 20 GB+
- Contextup to 131K
- Sizes2
- RunsLocal on Delta
ReasoningAgentsCodingGeneral reasoningTool callingDevelopers
Sizes
Memory at context length
Approximate working set for GPT-OSS 20B as context grows.
