Seed 2.1 Pro
ByteDanceMULTIMODAL Proprietary
- Provider
- ByteDance
- Modality
- MULTIMODAL
- Parameters
- —
- Context window
- —
- Weights
- Proprietary
- Released
- 24 Jun 2026
Seed 2.1 Pro (June 2026) is ByteDance's enterprise agent-focused flagship — strong on coding, desktop/mobile agents and multimodal/video understanding. A faster Seed 2.1 Turbo variant runs at about half the price.
Best for
- Enterprise coding and computer-use / agent workflows
- Multimodal and video understanding
- Powers the Doubao 2.1 Pro assistant
- Turbo variant for cheaper, faster runs
How it compares — and the India angle
- ByteDance claims it beats Claude Opus on several coding/agent benchmarks at ~80% lower total cost — attractive if the claims hold.
- Very cheap API (~$0.85/$4.15 per 1M) makes it a value option for high-volume agent workloads.
- Proprietary and China-hosted (Volcano Engine) — weigh data-residency for sensitive Indian use.
Benchmarks
Representative public scores (approximate, higher is better) for relative comparison. Check the provider for the latest official results.
Terminal-Bench71
How to access
Proprietary, via Volcano Engine. Seed 2.1 Pro ~$0.85 / 1M input, ~$4.15 / 1M output; Turbo about half.
Access Seed 2.1 Pro