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 about 10K input + 2K output tokens costs roughly $0.017 at list prices. 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 gpt-oss-120b (≈$0.03 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 disclosed context window. A typical call of about 10K input and 2K output tokens costs roughly $0.017.

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.

How does Doubao Seed 2.1 Pro pricing compare to Gemini 3.5 Flash?

Doubao Seed 2.1 Pro input costs $0.83 per 1M tokens versus $1.50 for Gemini 3.5 Flash, roughly 1.8x less expensive on input. Output is $4.17 vs $9.00.

Is Doubao Seed 2.1 Pro multimodal?

Doubao Seed 2.1 Pro supports text, image, video.