ByteDance Seed
ByteDance Seed: Seed 2.1 Turbo
bytedance-seed/seed-2-1-turbo
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 video content, with capabilities for planning, debugging, and self-correction.
Input
$0.5
/ 1M tokens
Output
$2.5
/ 1M tokens
Context window
262.14K
tokens
Limits
Context
262,144
tokens
Max output
235,929
90% of the context window
Model facts
Author
ByteDance Seed
Tokenizer
Other
Modality
Text + Image + Video -> Text
Created
Aug 12, 2026
Publication status
Hugging Face: not mappedLicense: not publishedParameter count: not published
Modalities
Input · TextInput · ImageInput · VideoOutput · Text
Generation controls
Frequency penaltyInclude reasoningMax tokensReasoningResponse formatStopStructured outputsTemperatureTool choiceToolsTop p