Moonshot: Kimi K3 API
Kimi's previous-generation flagship and the world's first open-source 3-trillion-class model (2.8 trillion parameters), with native visual understanding and a 1M-token context window, designed for long-horizon coding, knowledge work and deep reasoning.
- Context window: 1,048,576 tokens
- Max output: 1,048,576 tokens
- Input: text, image, video
- Output: text
- Reasoning: Supported
- Tool calling: Supported
- File input: Supported
- Released: 2026-07-16
- Knowledge cutoff: 2025-12-01
Frequently Asked Questions
What is the context window of Kimi K3?
Kimi K3 supports a context window of up to 1,048,576 tokens.
Does Kimi K3 support function calling?
Yes. Kimi K3 supports tool / function calling.
Does Kimi K3 support reasoning?
Yes. Kimi K3 is a reasoning-capable model.
What is the knowledge cutoff of Kimi K3?
The knowledge cutoff of Kimi K3 is 2025-12-01.