All Models

Seed 2.1 Pro

seedReasoningTool CallingAttachmentsStructured Output

Flagship ByteDance Seed 2.1 model for complex multimodal reasoning, coding, and agents

Providers2
ReleasedJun 23, 2026
Input Modalitiestext, image, video
Output Modalitiestext
Tarsk Usecoding

Available Providers (2)

ProviderModel IDInput CostOutput CostContextMax OutputDocs
Ofoxvolcengine/doubao-seed-2.1-pro$0.71/MTok$3.54/MTok256K256K
Volcengine Arkdoubao-seed-2-1-pro-260628$0.89/MTok$4.45/MTok256K256K

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output