Seed-OSS-36B
ByteDance's first open LLM family is a 36B dense model with 512K native context, Apache-2.0 licence and an adjustable thinking budget from 0 to 16K tokens.
Trained on 12T tokens with GQA; users set a thinking budget (512 to 16K tokens) and the model self-reflects at intervals. Reports 91.7 AIME24, 67.4 LiveCodeBench v6, 56 SWE-bench Verified, 94.6 RULER at 128K.
- Date
- Wednesday, 20 August 2025
- Lab
- ByteDance Seed
- Kind
- open-weights
- Access
- open weights
Figures
| Measure | Value | Measured by |
|---|---|---|
| AIME24 (Instruct) | 91.7 | company |
| LiveCodeBench v6 | 67.4 | company |
| SWE-bench Verified | 56 | company |
| Native context length | 512K tokens | company |
A Base-woSyn variant is also published. Benchmarks are ByteDance-reported.
Sources
This record was checked against its sources on 6 October 2026. How we check