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Seed-OSS 36B

Hugging Face (open weights) Open weights

The catch: Released August 2025 with no newer Seed-OSS since, and text-only.

AccessOpen weights
Free limitsFree to download and self-host; you pay only for your own compute. 36B dense with a native 512K-token context and a controllable thinking budget. Apache 2.0.
Modalitytext, code
Credit cardNot required
Commercial useAllowed
Trains on your data–
Licence or termsApache-2.0
Context window524,288 tokens
Model idByteDance-Seed/Seed-OSS-36B-Instruct
Base URL–
Last checked8 Oct 2026

How to use Seed-OSS 36B

Download the weights and serve them yourself; the quickstart below shows one way. Licence: Apache-2.0.

Quickstart 
vllm serve ByteDance-Seed/Seed-OSS-36B-Instruct  # then: curl http://localhost:8000/v1/chat/completions -H "Content-Type: application/json" -d '{"model":"ByteDance-Seed/Seed-OSS-36B-Instruct","messages":[{"role":"user","content":"Hello"}]}'
Paste into Claude Code 
I want to run the open-weight model "Seed-OSS 36B" (ByteDance-Seed/Seed-OSS-36B-Instruct) for my project.
Please:
1. Check the model card and tell me the hardware it needs and the simplest way to serve it (vLLM, SGLang, Ollama or a hosted endpoint).
2. Give me a minimal working setup and a test request.
3. Tell me the licence terms for commercial use.
4. If a cheaper or smaller variant would do the job, mention it.
Provider docs Get the weightsCompare all 507 free options

Before you ship on it

  • Released August 2025 with no newer Seed-OSS since, and text-only.
  • Apache-2.0 (licence tag on the HF repo): use, modify, distribute and sell, including commercially; keep the licence and notices when you redistribute.
  • Free to run means you pay for the GPUs, the serving stack and the on-call.

Questions

Is Seed-OSS 36B free?

Yes. Open weights offers it as open weights, with these limits: Self-host free · Apache-2.0. No credit card is needed.

Can I use Seed-OSS 36B commercially?

Yes, under Apache-2.0. Check the current terms before you ship.

How do I start with Seed-OSS 36B?

Download the weights and serve them yourself; the quickstart below shows one way. Licence: Apache-2.0.

Source: huggingface.co/ByteDance-Seed/Seed-OSS-36B-Instruct, checked 8 Oct 2026.