ByteDance Seed 2.1 Turbo

seed Reasoning Tool Calling Attachments Structured Output

Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows. It is suited for end-to-end software delivery, multi-step task execution, and understanding visual and...

Providers 1

Released Aug 12, 2026

Input Modalities text, image, video

Output Modalities text

Tarsk Use coding

Available Providers (1)

Provider	Model ID	Input Cost	Output Cost	Context	Max Output	Docs
NanoGPT	`bytedance-seed/seed-2-1-turbo`	$0.50/MTok	$2.50/MTok	262.1K	262.1K

Capabilities

Reasoning

Tool Calling

Attachments

Open Weights

Structured Output