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Ofox

Seed 2.1 Pro API

Ofox
About

Build advanced reasoning agents with Seed 2.1 Pro, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.88/1M input and $4.42/1M output tokens, native tool calling support. Access Seed 2.1 Pro via the Ofox API with up to 256K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
256K

Tokens

Input Limit
256K

Tokens

Max Output
256K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.88
Output
$4.42

Caching (per 1M tokens)

Read
$0.18
Write
$0.0025
Frequently Asked Questions

Seed 2.1 Pro by Ofox costs $0.88 per 1M input tokens and $4.42 per 1M output tokens. Cached reads cost $0.18 per 1M tokens. Cache writes cost $0.0025 per 1M tokens.

Model Details
ID
volcengine/doubao-seed-2.1-pro
Provider
Ofox
Family
seed
Release Date
Jun 23, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
OFOX_API_KEY
API Base URL
https://api.ofox.ai/v1
Documentation