Seed 2.0 Lite - GENGEN API

Seed 2.0 Lite 260428 is the current omnimodal Lite model for Chat Completions and Responses APIs. It supports text, image, audio, and video input with text output, including video understanding through the Responses API.

Model ID

seed-2-0-lite-260428

Pass this exact public ID in the top-level model field. Do not substitute an upstream provider alias.

Supported modes

chat_completions
text_generation
responses_api
visual_understanding

Inputs

Text
Image
Audio
Video

Outputs

Text

Capabilities

Chat completions
Visual understanding
Text generation

Additional capabilities

Function calling
Model experience
Structured output
Online inference
Streaming output
Context caching
Deep thinking
Function call
Web search See Function calling and Gemini tools for tool declarations, result submission, and provider-specific capabilities.

Technical details

Property	Value
Provider	`byteplus-modelark`
Modality	`reasoning`
Processing	`Synchronous response`
Endpoint	`/api/gengen/v1/chat/completions`
Rate limit	`30K`
Context window	`256K`
Streaming	`Supported (Server-Sent Events)`
Max input tokens	`224K`
Max output tokens	`128K`
Max reasoning tokens	`128K`
Token rate limit	`1500K`

Availability and final customer prices can change. Check the Dashboard model catalog before production use.

See the API reference overview for authentication, request conventions, and response schemas.