# ByteDance: doubao-seed-2.1-pro

- Model ID: `doubao-seed-2.1-pro`
- Provider: ByteDance
- Web version: https://www.moleapi.com/en/models/doubao/doubao-seed-2.1-pro
- Content status: catalog

## Model introduction

doubao-seed-2.1-pro is a ByteDance model available through MoleAPI with openai access. It fits OpenAI compatible workflows, with pricing synced from the MoleAPI console.

## Model capabilities

- OpenAI compatible

### Verified specifications

- Catalog status: Currently available on MoleAPI
- Compatible protocols: openai
- Available billing groups: Standard

## Model pricing and access

Pricing is supplied dynamically by the MoleAPI console API.

### Standard (default, x1)

- Input: $0.9 / 1M tokens
- Output: $4.5 / 1M tokens

### Access protocols

| Protocol | Method | Endpoint |
| --- | --- | --- |
| openai | POST | /v1/chat/completions |

- Live pricing source: https://home.moleapi.com/api/pricing

## About doubao-seed-2.1-pro

## Positioning and core capabilities

Doubao-Seed-2.1-Pro is ByteDance’s flagship-grade general agent model in the Seed 2.1 family, positioned for real-world productivity workflows and multi-step task execution. [8] It supports deep reasoning, text generation, multimodal understanding, tool calling, and structured output. [4]

The model is designed to work with text and multimodal inputs, including documents, charts, images, and video. [8] Volcano Engine recommends `json_schema` for structured output. [4]

## Capabilities and specifications

Doubao-Seed-2.1-Pro combines agent-oriented reasoning, multimodal analysis, tool use, and structured response generation. [4] Its published context and generation limits support long-context workloads. [4]

| Specification | Published value |
|---|---:|
| Context window | 256K tokens [4] |
| Maximum input | 256K tokens [4] |
| Maximum output | 256K tokens; 4K default [4] |
| Maximum reasoning-chain allowance | 256K tokens [4] |
| Listed throughput ceiling | 500 RPM and 1,000,000 TPM [4] |

Volcano Engine describes the listed RPM and TPM ceilings as non-rigid limits that can vary by platform load and invocation method. [4]

## Use cases

Doubao-Seed-2.1-Pro is positioned for agent workflows that combine project planning, document processing, tool use, information analysis, solution design, content planning, and result consolidation. [8]

ByteDance also positions Seed 2.1 Pro for enterprise software development across requirements analysis, feature implementation, bug fixing, environment setup, and result validation. [8] Its multimodal positioning covers complex document, chart, numerical, visual, and video understanding tasks. [8]

## Material limitations

The model’s documented throughput limits are not guaranteed fixed quotas and may change with platform conditions and the calling method. [4] Although the published maximum output is 256K tokens, the documented default output setting is 4K tokens. [4]

## Sources

- [3] [豆包大模型 — Volcano Engine](https://www.volcengine.com/product/doubao)
- [4] [火山方舟模型列表 — Volcano Engine](https://www.volcengine.com/docs/82379/1554521)
- [8] [Seed2.1 Officially Released: Advancing AI Productivity — ByteDance Seed](https://seed.bytedance.com/en/blog/seed2-1-officially-released-advancing-ai-productivity)


## Code examples

### cURL

```bash
curl https://api.moleapi.com/v1/chat/completions \
  -H "Authorization: Bearer $MOLEAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"doubao-seed-2.1-pro","messages":[{"role":"user","content":"Hello"}]}'
```

## More related models

- [doubao-seedream-4-0-250828](https://www.moleapi.com/en/models/doubao/doubao-seedream-4-0-250828) — ByteDance
- [doubao-seed-2-0-code-preview-260215](https://www.moleapi.com/en/models/doubao/doubao-seed-2-0-code-preview-260215) — ByteDance
- [doubao-seed-2-0-lite-260215](https://www.moleapi.com/en/models/doubao/doubao-seed-2-0-lite-260215) — ByteDance

## Frequently asked questions

### How is doubao-seed-2.1-pro priced?

Prices are read from the MoleAPI console API and update with model prices, context tiers, and account groups.

### How can I access doubao-seed-2.1-pro?

The catalog currently lists openai.

### How do I switch an existing project to doubao-seed-2.1-pro?

Keep the MoleAPI API address and key, replace the model parameter, and check protocol-specific parameters.

### Where do the doubao-seed-2.1-pro details come from?

Only confirmed availability, pricing, and protocol details from the MoleAPI catalog are included.