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OpenRouter

Kimi K2 (free) API

OpenRouter
About

Kimi K2 (free) is a high-performance LLM available via the OpenRouter API, ideal for scalable text generation and natural language processing. This model delivers available completely free of charge, native tool calling support, open weights architecture. Access Kimi K2 (free) via the OpenRouter API with up to 33K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
No
Structured Output
No
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
33K

Tokens

Input Limit
33K

Tokens

Max Output
33K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free
Frequently Asked Questions

Kimi K2 (free) by OpenRouter costs Free per 1M input tokens and Free per 1M output tokens.

Model Details
ID
moonshotai/kimi-k2:free
Provider
OpenRouter
Family
kimi
Release Date
Jul 11, 2025
Knowledge Cutoff
Apr 1, 2025
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation