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OpenRouter

Kat Coder Pro (free) API

OpenRouter
About

Process massive datasets with Kat Coder Pro (free), featuring an expansive 256K context window for long-document analysis. This model delivers available completely free of charge, native tool calling support. Access Kat Coder Pro (free) via the OpenRouter API with up to 66K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
No
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
256K

Tokens

Input Limit
256K

Tokens

Max Output
66K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free
Frequently Asked Questions

Kat Coder Pro (free) by OpenRouter costs Free per 1M input tokens and Free per 1M output tokens.

Model Details
ID
kwaipilot/kat-coder-pro:free
Provider
OpenRouter
Family
kat-coder
Release Date
Nov 10, 2025
Knowledge Cutoff
Nov 1, 2025
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation