ByteDance Seed · Released Jun 23, 2026Seed 2.1 Turbo
Faster ByteDance Seed 2.1 model for multimodal reasoning and latency-sensitive agent workflows.
- Capability
- —No ECI score yet
- Input
- $0.445per 1M tokens
- Output
- $2.23per 1M tokens
- Context
- 256K256K max output
What it costs
- Input
- $0.445per million tokens
- Output
- $2.23per million tokens
- Cached input
- $0.089per million tokens
- Blended (3:1)
- $0.891pricier than 52% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $2.00 |
| Team assistant25M input + 5M output tokens | $22.27 |
| Production app250M input + 50M output tokens | $222.65 |
Official Volcengine Ark API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Seed 2.1 Turbo yet.
The details
- Lab
- ByteDance Seed
- Released
- Jun 23, 2026
- Context window
- 256,000 tokens
- Max output
- 256,000 tokens
- Inputs
- Text, Images, Video
- Output
- Text
- Reasoning
- Adjustable effort minimal · low · medium · high · xhigh · max
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Proprietary
- API model ID
doubao-seed-2-1-turbo-260628on Volcengine Ark- Availability
- 4 API providerslisted on models.dev
More from ByteDance Seed
About Seed 2.1 Turbo
How much does Seed 2.1 Turbo cost?
Seed 2.1 Turbo costs $0.445 input / $2.23 output per million tokens (official Volcengine Ark API price). Cached input is $0.089 per million tokens. At a 3:1 input-to-output mix that is $0.891 per million tokens, more expensive than 52% of the 360 priced models we track.
What is the context window of Seed 2.1 Turbo?
Seed 2.1 Turbo accepts up to 256,000 tokens per request and can write up to 256,000 tokens in one response.
How good is Seed 2.1 Turbo?
Epoch AI has not published a Capabilities Index score for Seed 2.1 Turbo yet.
Is Seed 2.1 Turbo open source?
No. Seed 2.1 Turbo is proprietary; you use it through Volcengine Ark’s API or partner platforms.
What inputs does Seed 2.1 Turbo support?
Seed 2.1 Turbo accepts text, images and video and replies in text. It is a reasoning model with minimal, low, medium, high, xhigh and max effort settings, supports tool calling and can return structured JSON output.
When was Seed 2.1 Turbo released?
ByteDance Seed released Seed 2.1 Turbo on Jun 23, 2026.
What are the best alternatives to Seed 2.1 Turbo?
The closest current models from other labs on capability, price and release date are Motif 3 (Motif Technologies, $0.50 / $2.00), Nex-N2-Pro (Nex AGI, $0.50 / $2.50), LongCat-2.0 (Meituan (LongCat), $0.75 / $2.95) and Qwen3.5 27B (Alibaba (Qwen), $0.30 / $2.40).