ByteDance Seed

Seed 2.1 Turbo

Seed 2.1 Turbo is ByteDance Seed’s multimodal model for coding, long-horizon agents, multi-step task execution, tools, reasoning, and visual and video understanding.

seed-2-1-turbo

Pricing

~50%

Input: $0.25 / 1,000,000 tokens
Output: $1.25 / 1,000,000 tokens
Cache read: $0.0375 / 1,000,000 tokens
Cache write: $0.25 / 1,000,000 tokens

How pricing works

Discount history

50%Nov 8, 03:58 AM UTC

Nov 7, 11:59 PMNov 8, 03:58 AM UTC

Model details

Input: text, image, video
Output: text
Context window: 256,000 tokens
Maximum output: 65,536 tokens
Availability: Uncapped capacity
Updated: 11/8/2026, 4:00:11 AM UTC

Capacity is reserved when your request is accepted.

Capabilities

ChatStreamingWeb searchVisionTool callingReasoningJSON mode

Supported parameters

frequency_penaltyinclude_reasoningmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_p