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OpenRouter

o4 Mini API

OpenRouter
About

Build advanced reasoning agents with o4 Mini, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $1.10/1M input and $4.40/1M output tokens, native tool calling support. Access o4 Mini via the OpenRouter API with up to 100K 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
200K

Tokens

Input Limit
200K

Tokens

Max Output
100K

Tokens

Pricing

Standard (per 1M tokens)

Input
$1.10
Output
$4.40

Caching (per 1M tokens)

Read
$0.28
Frequently Asked Questions

o4 Mini by OpenRouter costs $1.10 per 1M input tokens and $4.40 per 1M output tokens. Cached reads cost $0.28 per 1M tokens.

Model Details
ID
openai/o4-mini
Provider
OpenRouter
Family
o-mini
Release Date
Apr 16, 2025
Knowledge Cutoff
Jun 1, 2024
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation