Doubao Seed 2.1 Pro

ByteDance's coding/agent-focused flagship, released June 23, 2026 at the Volcano Engine FORCE conference and benchmarked against GPT-5.5, Claude Opus and Gemini 3.1 Pro. Prices converted from CNY (6 yuan input / 30 yuan output per 1M; ~7.2 CNY/USD; cache-hit input ~$0.17). A cheaper Turbo tier (~half price) also exists. Served via Volcano Engine — verify current rates and context window.

Doubao Seed 2.1 Pro strengths

• End-to-end coding delivery
• Long-horizon agent planning and self-repair
• Multimodal / VLM understanding
• Very low cost (ByteDance claims ~80% under Claude Opus)
• Enterprise-grade stability

Pricing & context

Cost guide: a typical call of ~10K input + 2K output tokens runs roughly $0.83 × 0.01 + $4.17 × 0.002 — worth modelling against cheaper tiers before committing high-volume traffic.

When to choose Doubao Seed 2.1 Pro

Doubao Seed 2.1 Pro is best for Complex coding and long-chain agent tasks at low cost, especially for teams already on Volcano Engine. If your workload is more cost-sensitive, weigh it against Llama 4 Scout (~$0.08 (varies by host) input /1M) first.

Doubao Seed 2.1 Pro FAQ

How much does Doubao Seed 2.1 Pro cost?

Doubao Seed 2.1 Pro is priced at $0.83 per 1M input tokens and $4.17 per 1M output tokens (public API list price), with a Not officially disclosed (verify) context window.

What is Doubao Seed 2.1 Pro best for?

Doubao Seed 2.1 Pro by ByteDance is best for Complex coding and long-chain agent tasks at low cost, especially for teams already on Volcano Engine.

Is Doubao Seed 2.1 Pro multimodal?

Doubao Seed 2.1 Pro supports text, image, video.