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Kimi For Coding

Kimi K3 API

Kimi For Coding
About

Build advanced reasoning agents with Kimi K3, 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, open weights architecture. Access Kimi K3 via the Kimi For Coding API with up to 131K 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
Fixed
Attachment
Not Supported
Limits
Context Window
1.0M

Tokens

Input Limit
1.0M

Tokens

Max Output
131K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free

Caching (per 1M tokens)

Read
Free
Write
Free
Frequently Asked Questions

Kimi K3 by Kimi For Coding costs Free per 1M input tokens and Free per 1M output tokens. Cached reads cost Free per 1M tokens. Cache writes cost Free per 1M tokens.

Model Details
ID
k3
Provider
Kimi For Coding
Family
kimi-k3
Release Date
Jul 16, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/anthropic
Environment Variables
KIMI_API_KEY
API Base URL
https://api.kimi.com/coding/v1
Documentation