Doubao-Seed-2.1-Pro
Doubao Seed 2.1 flagship model with deep thinking, multimodal understanding and tool use.
Specs
- Context
- 1.05M
- Max output
- 262.1K
- Input price
- ¥6/ 1M tokens
- Output price
- ¥30/ 1M tokens
- Released
- 2026-06-23
Context
- Context window
- 1.05M
- Max input
- 1.05M
- Max output
- 262.1K
Pricing · CNY / 1M tokens
- Input
- ¥6
- Output
- ¥30
- Cache read
- ¥1.2
- Cache write
- —
Modalities
- Input
- TextImageVideo
- Output
- Text
API
- API types
Reasoning
- Reasoning
- Yes
- Levels
Info
- Status
- Active
- Released
- 2026-06-23
- Knowledge cutoff
- —
Features
- Confirmed
How to call
1 provider
bytedancemodel = doubao-seed-2-1-pro-260915reasoning = reasoning_effort
chat
POSThttps://ark.cn-beijing.volces.com/api/v3/chat/completions
responses
POSThttps://ark.cn-beijing.volces.com/api/v3/responses
JSON
Standard format
{
"id": "doubao-seed-2-1-pro",
"object": "model",
"created": 1782172800,
"owned_by": "bytedance",
"name": "Doubao-Seed-2.1-Pro",
"api": {
"types": [
"chat",
"responses"
]
},
"limits": {
"context": 1048576,
"input": 1048576,
"output": 262144
},
"modalities": {
"input": [
"text",
"image",
"video"
],
"output": [
"text"
]
},
"reasoning": {
"supported": true,
"efforts": [
"none",
"minimal",
"low",
"medium",
"high",
"xhigh",
"max"
]
},
"pricing": {
"currency": "CNY",
"unit": "1M_tokens",
"input": 6,
"output": 30,
"cache_read": 1.2,
"cache_write": null
},
"features": [
"tools",
"structured_output",
"streaming",
"caching",
"batch"
],
"info": {
"status": "active",
"release_date": "2026-06-23",
"knowledge_cutoff": null,
"description": "Doubao Seed 2.1 flagship model with deep thinking, multimodal understanding and tool use.",
"docs": "https://www.volcengine.com/docs/82379/1330310",
"verified_at": "2026-10-11"
}
}Official sources
4