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FastRouter

Seedance 2 API

FastRouter
About

Integrate multimodal vision capabilities using Seedance 2, designed to process both text and images seamlessly. This model delivers available completely free of charge. Access Seedance 2 via the FastRouter API with reliable low-latency inference.

Capabilities

Input Modalities

textimage

Output Modalities

video
Reasoning
No
Structured Output
No
Tool Use
No
WeightsClosed
Temperature
Fixed
Attachment
Supported
Limits
Context Window
4K

Tokens

Input Limit
4K

Tokens

Max Output
N/A

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free
Frequently Asked Questions

Seedance 2 by FastRouter costs Free per 1M input tokens and Free per 1M output tokens.

Model Details
ID
bytedance/seedance-2
Provider
FastRouter
Family
seed
Release Date
Apr 1, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
FASTROUTER_API_KEY
API Base URL
https://go.fastrouter.ai/api/v1
Documentation