Kimi-K2.5 API
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 $0.50/1M input and $2.50/1M output tokens, native tool calling support, open weights architecture. Access Kimi-K2.5 via the Nebius Token Factory API with up to 8K output tokens.
Capabilities
Input Modalities
textimage
Output Modalities
text
Reasoning
Yes
Structured Output
Limits
Context Window
256K
Tokens
Input Limit
256K
Tokens
Max Output
8K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.50
Output
$2.50
Reasoning (per 1M tokens)
Output
$2.50
Caching (per 1M tokens)
Read
$0.05
Write
$0.63
Frequently Asked Questions
Kimi-K2.5 by Nebius Token Factory costs $0.50 per 1M input tokens and $2.50 per 1M output tokens. Cached reads cost $0.05 per 1M tokens. Cache writes cost $0.63 per 1M tokens.
Model Details
ID
moonshotai/Kimi-K2.5
Provider
Nebius Token FactoryFamily
kimi-k2
Release Date
Dec 15, 2025
Knowledge Cutoff
Jun 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NEBIUS_API_KEY
API Base URL
https://api.tokenfactory.nebius.com/v1