Model prices / ByteDance (Doubao / Seed)

Doubao Seed 2.1 Pro API pricing

Official API pricing for Doubao Seed 2.1 Pro (ByteDance (Doubao / Seed)) on Volcano Engine Ark: cache and off-peak prices, context length, open weights and regional availability, with sources and check dates.

Context: 1.02M
Max output: 256K
Open weights: No
Current version: 2026-09-15

CN · CNY Volcano Engine Ark

doubao-seed-2-1-pro-260915

Tier	Input	Cached input	Cache write	Output
Standard	¥6≈$0.897	¥1.2≈$0.179	—	¥30≈$4.487

Mainland China YesOutside China Not statedOfficial payment Alipay, WeChat Pay, Online banking, Bank transfer

per 1M tokens · Source 2026-10-17

Standard online inference, single tier for input up to 1,024K; cache storage billed at ¥0.017 per 1M tokens per hour. Low-priority and batch inference are about half price

Source

https://docs.volcengine.com/docs/ark/model-list?lang=zh · 2026-10-17

≈ marks values converted at the ECB reference rate, for comparison only; the published currency is authoritative.