ByteDance Seed 2.1 Turbo
BytePlus
🧠 Language Model
ByteDance Seed 2.1 Turbo, fast multimodal reasoning agent (text & image in → text), strong tool use + thinking, 256K context. Native via BytePlus (Ark).
Specifications
Input modalitiestext, image
Output modalitiestext
Capabilitiestools, reasoning
Relative speed●●●●● Blazing
Context window262,144 tokens
Max output65,536 tokens
Vision inputYes
Tool callingYes
Streaming outputYes
Input price$0.875 / 1M
Output price$4.38 / 1M
Pricing
$0.875 / 1M input tokens · $4.38 / 1M output tokens
Platform credit pricing — live rates on the Models page.