Seed 2.1 (Pro, Turbo)
Agent-first successor to Seed 2.0 in Pro and Turbo sizes, claiming the highest GDPVal score and best MobileWorld GUI result.
Targets office and professional agent work and end-to-end coding. RL reduces average GUI steps by 16%, and Pro scores 53.0 on Workspace Bench and 47.0 on NL2Repo-Bench. Pro trails Claude Opus 4.7 on NL2Repo-Bench (58.2).
- Date
- Tuesday, 23 June 2026
- Lab
- ByteDance Seed
- Kind
- model
- Access
- closed API
Figures
| Measure | Value | Measured by |
|---|---|---|
| Workspace Bench (Pro) | 53.0 | company |
| Agent Startup Bench (Pro) | 68.8 | company |
| NL2Repo-Bench (Pro) | 47.0 vs Claude Opus 4.7 58.2 | company |
Date from the Seed blog (2026-06-23); OpenRouter lists Seed 2.1 Turbo on 2026-08-12. Benchmarks are company-run, several are in-house.
Sources
- seed.bytedance.com/en/blog/seed2-1-officially-released-advancing-ai-productivity
- seed.bytedance.com/en/seed2_1
This record was checked against its sources on 6 October 2026. How we check