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OpenRouter

Kimi K2.5 API

OpenRouter
About

Build advanced reasoning agents with Kimi K2.5, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.60/1M input and $3.00/1M output tokens, native tool calling support, open weights architecture. Access Kimi K2.5 via the OpenRouter API with up to 262K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
262K

Tokens

Input Limit
262K

Tokens

Max Output
262K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.60
Output
$3.00

Caching (per 1M tokens)

Read
$0.10
Frequently Asked Questions

Kimi K2.5 by OpenRouter costs $0.60 per 1M input tokens and $3.00 per 1M output tokens. Cached reads cost $0.10 per 1M tokens.

Model Details
ID
moonshotai/kimi-k2.5
Provider
OpenRouter
Family
kimi
Release Date
Jan 27, 2026
Knowledge Cutoff
Jan 1, 2025
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation