--- title: "GPT-OSS: Specs, Setup, and Self-Hosting Guide" url: https://daily.dev/posts/gpt-oss-specs-setup-and-self-hosting-guide-jv8b7iigx source_url: https://semaphore.io/blog/gpt-oss type: article source: "Semaphore" published: 2025-08-15T10:41:42.686Z updated: 2025-08-15T10:42:09.999Z tags: ["machine-learning", "llm", "openai", "self-hosting"] reading_time: 7 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # GPT-OSS: Specs, Setup, and Self-Hosting Guide **[Semaphore](https://daily.dev/sources/semaphore)** · 7 min read · 0 upvotes · 0 comments ## Summary OpenAI released GPT-OSS-20B and GPT-OSS-120B, their first open-source large language models under Apache 2.0 license. The 20B model runs on consumer hardware with 16-32GB RAM, while the 120B model requires data center GPUs. Both feature chain-of-thought reasoning, configurable effort levels, fine-tuning support, and 128k token context windows. Users can test them via OpenAI's playground, HuggingFace, or API providers, and run them locally using LM Studio, Ollama, or vLLM. Cloud hosting costs range from $4,000-$12,000 monthly for dedicated GPU instances, with shared options available for lower costs. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 0 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments --- Tags: [#machine-learning](https://daily.dev/tags/machine-learning), [#llm](https://daily.dev/tags/llm), [#openai](https://daily.dev/tags/openai), [#self-hosting](https://daily.dev/tags/self-hosting) [View this post on daily.dev](https://daily.dev/posts/gpt-oss-specs-setup-and-self-hosting-guide-jv8b7iigx)