Moonshot: kimi-k2-0905-preview API
An advanced version of the Kimi K2 series by Moonshot AI. As a major upgrade to the 0711 version, it doubles the context window to 256k and significantly enhances agentic coding intelligence and frontend code aesthetics. Built on a 1-trillion parameter Mixture-of-Experts (MoE) architecture, it offers superior stability and accuracy for complex tool calling and long-horizon reasoning.
- Context window: 262,144 tokens
- Max output: 262,144 tokens
- Input: text
- Output: text
- Reasoning: Supported
- Tool calling: Supported
- File input: Supported
- Released: 2025-09-05
- Knowledge cutoff: 2024-09-30
Frequently Asked Questions
What is the context window of kimi-k2-0905-preview?
kimi-k2-0905-preview supports a context window of up to 262,144 tokens.
Does kimi-k2-0905-preview support function calling?
Yes. kimi-k2-0905-preview supports tool / function calling.
Does kimi-k2-0905-preview support reasoning?
Yes. kimi-k2-0905-preview is a reasoning-capable model.
What is the knowledge cutoff of kimi-k2-0905-preview?
The knowledge cutoff of kimi-k2-0905-preview is 2024-09-30.