Doubao Seed 2.1 Pro
bytedance/doubao-seed-2-1-proByteDance's general model at 256K context.
Model overview
Context window
256K
tokens
Input price
R18.30
per 1M tokens
Output price
R91.60
per 1M tokens
Weekly volume
—
tokens / week
Open weights
No
API only
Capabilities
3
of 11 tags
Description
Doubao Seed 2.1 Pro is a language model from ByteDance Doubao. Webparam does not stock this model yet and can source it on request — tell us what you need it for and we will come back with availability and a price. ByteDance Doubao’s stated focus is consumer-scale LLMs and generative video. The weights are not published, so it is API-only.
Capabilities
- Tool calling
- Calls functions you define and returns their arguments as structured data, the basis of agents.
- JSON mode
- Constrains the response to valid JSON matching a schema you supply.
- Streaming
- Emits tokens as they are generated, so answers appear progressively rather than all at once.
Strengths & weaknesses
Strengths
- 256K context
- Price quoted from the supplier's own rate card, not estimated
Weaknesses
- Not provisioned on this account yet — lead time applies
Pricing
| Rate | Price | Unit |
|---|---|---|
| Input | R18.30 | per 1M tokens |
| Output | R91.60 | per 1M tokens |
This model is not provisioned yet; the rate is quoted on request.
Context window
256Ktokens
covers prompt and response together, so a long input leaves less room for the answer.
Supported features
| Feature | Support |
|---|---|
| Tool calling | Supported |
| JSON mode | Supported |
| Streaming | Supported |
| Vision input | Not supported |
| Audio input | Not supported |
| Long context | Not supported |
| Open weights | Not supported |
| Reasoning | Not supported |
| Fine-tunable | Not supported |
| Batch | Not supported |
| Caching | Not supported |
Example use cases
General assistants
Retrieval-augmented answering
Everyday production traffic
Comparison
Compare against anything →| Attribute | Doubao Seed 2.1 Pro | AC Flash 4.5 | AC Pro 4.6 |
|---|---|---|---|
| Context window | 256K | — | — |
| Input price | R18.30 | R10.00 | R60.00 |
| Output price | R91.60 | R40.00 | R250.00 |
| Tool calling | Supported | Supported | Supported |
| JSON mode | Supported | Supported | Supported |
| Vision input | Not supported | Not supported | Not supported |
| Open weights | Not supported | Not supported | Not supported |
| Prompt caching | Not supported | Not supported | Not supported |
Best value in each row is highlighted. Blank cells are facts the supplier does not publish, not zeroes.
Provider information
View ByteDance Doubao →ByteDance Doubao · 豆包 · Beijing, China · est. 2023 (Model lab; parent ByteDance founded 2012)
Doubao is ByteDance's model family, priced aggressively enough to reset the Chinese market and deployed across products with hundreds of millions of users. Its Seedance video and Seedream image lines translate TikTok-era creative expertise into generative models with striking motion quality.
Recent releases
Documentation
Frequently asked questions
Input is billed at R18.30 per 1M tokens and output at R91.60 per 1M tokens. Every figure on this page is an illustrative placeholder.