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OpenRouter

Seed 2.1 Turbo API

OpenRouter
About

Build advanced reasoning agents with Seed 2.1 Turbo, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.50/1M input and $2.50/1M output tokens, native tool calling support. Access Seed 2.1 Turbo via the OpenRouter API with up to 262K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
262K

Tokens

Input Limit
262K

Tokens

Max Output
262K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.50
Output
$2.50
Frequently Asked Questions

Seed 2.1 Turbo by OpenRouter costs $0.50 per 1M input tokens and $2.50 per 1M output tokens.

Model Details
ID
bytedance-seed/seed-2-1-turbo
Provider
OpenRouter
Family
seed
Release Date
Aug 12, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation