Back to Models
Seed OSS 36B
bytedancebytedance/seed-oss-36b
API guide
Chat completion
cURL
curl https://api.therouter.ai/v1/chat/completions \
-H "Authorization: Bearer $THEROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"bytedance/seed-oss-36b","messages":[{"role":"user","content":"Explain the difference between GQA and MQA in one paragraph."}]}'Reasoning with thinking budget
Seed-OSS-36B supports an optional thinking-budget parameter (provider-dependent). Setting a budget (e.g., 2048) caps chain-of-thought length, improving latency on simpler tasks while preserving full reasoning when the budget is large or omitted.
cURL
curl https://api.therouter.ai/v1/chat/completions \
-H "Authorization: Bearer $THEROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "bytedance/seed-oss-36b",
"messages": [{"role":"user","content":"Solve AIME 2025 problem 12 step by step."}],
"extra_body": {"thinking_budget": 4096}
}'Tool use
Strong agentic performance (SWE-Bench 56 %, TAU1-Retail 70.4 %). Use for tool-calling agents that benefit from controllable reasoning depth.
cURL
curl https://api.therouter.ai/v1/chat/completions \
-H "Authorization: Bearer $THEROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "bytedance/seed-oss-36b",
"messages": [{"role": "user", "content": "Find the latest commit on the main branch."}],
"tools": [{"type":"function","function":{"name":"git_log","parameters":{"type":"object","properties":{"branch":{"type":"string"}}}}}]
}'Fact ledger β every claim on this page traces here
| source | URL | retrieved | |
|---|---|---|---|
| Release date | github.com β | 2026-05-25 | verified |
| License | github.com β | 2026-05-25 | verified |
| Architecture | github.com β | 2026-05-25 | verified |
| Context window | github.com β | 2026-05-25 | verified |
| Training data | github.com β | 2026-05-25 | verified |
| Thinking budget control | github.com β | 2026-05-25 | verified |
| Inference backends | github.com β | 2026-05-25 | verified |
| AIME24 | github.com β | 2026-05-25 | verified |
| AIME25 | github.com β | 2026-05-25 | verified |
| LiveCodeBench v6 | github.com β | 2026-05-25 | verified |
| SWE-Bench Verified (OpenHands) | github.com β | 2026-05-25 | verified |
| RULER (128K) | github.com β | 2026-05-25 | verified |
| MMLU-Pro | github.com β | 2026-05-25 | verified |
| ByteDance Seed releases Seed-OSS-36B family under Apache 2.0 | github.com β | 2026-05-25 | verified |
| How does the thinking budget feature work? | github.com β | 2026-05-25 | to verify |
| Is Seed-OSS-36B suitable for production agent deployments? | github.com β | 2026-05-25 | to verify |