Last refreshed 2026-06-26. Next refresh: weekly.
Why use Seed 2.1 Pro on Volcengine?
Volcengine offers Seed 2.1 Pro with pay-as-you-go pricing at $0.83/1M input tokens. Volcengine is ByteDance's cloud platform offering comprehensive AI APIs including Doubao LLMs for multimodal generation and inference with Chinese market optimization.
Setup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: doubao-seed-2.1-prodoubao-seed-2.1-proRequest example
Gotchas
- Use provider model ID "doubao-seed-2.1-pro", not the LLMReference slug "seed-2.1-pro".
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.83 |
| Output tokens | $4.14 |
Capabilities
About Seed 2.1 Pro
ByteDance Doubao Seed 2.1 Pro is the flagship deep thinking model in the Seed 2.1 series, announced June 23-24, 2026 at the Volcano Engine annual conference. Designed for high-complexity exploration scenarios including complex coding engineering delivery, long-chain agent task execution, and multimodal understanding — three directions where ByteDance claims comprehensive upgrades over Seed 2.0. Benchmarks cited internally position it at Claude Opus 4.6–4.7 class. Native Volcano Engine pricing is ¥6/MTok input, ¥30/MTok output (approximately $0.83/$4.14 USD at 7.25 CNY/USD). Access available through Coze ecosystem and Volcano Engine API.
FAQ
What does Seed 2.1 Pro cost on Volcengine?
On Volcengine, Seed 2.1 Pro costs $0.83 per 1M input tokens and $4.14 per 1M output tokens.
What API model ID do I use for Seed 2.1 Pro on Volcengine?
Use the model ID doubao-seed-2.1-pro when calling Volcengine's API.
Who created Seed 2.1 Pro?
Seed 2.1 Pro was created by ByteDance as part of the Seed 2 model family.
Is Seed 2.1 Pro open source?
Seed 2.1 Pro is not open source; the seed data lists it as proprietary.