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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
ModalitiesInput: text, image · Output: text
Context window262K tokens
Max output65K tokens
Speed●●●●● Blazing
FeaturesTools: Yes Streaming: Yes Vision: Yes
Capabilitiestools, reasoning
Pricing
$0.875 / 1M input tokens · $4.38 / 1M output tokens
Platform credit pricing — live rates on the Models page.