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OpenRouter

Free Models Router API

OpenRouter
About

Build advanced reasoning agents with Free Models Router, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers available completely free of charge, native tool calling support. Access Free Models Router via the OpenRouter API with up to 8K 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
8K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free
Frequently Asked Questions

Free Models Router by OpenRouter costs Free per 1M input tokens and Free per 1M output tokens.

Model Details
ID
openrouter/free
Provider
OpenRouter
Family
Release Date
Feb 1, 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