Moonshot: Kimi K2.5 API
Kimi-k2.5 is Moonshot AI's most versatile and intelligent flagship multimodal model to date. Built with a native multimodal architecture, it deeply integrates visual understanding, logical reasoning, code generation, and Agent task processing capabilities. Compared to its predecessor, K2, the k2.5 model marks a significant breakthrough in Agent automation, supporting over 300 steps of complex tool calling for autonomous data crawling, code execution, and in-depth research report writing. Its unique dual-mode design ("Thinking" and "Non-thinking") allows the model to perform long-horizon reasoning for complex logic while maintaining ultra-fast response speeds for standard conversational tasks.
- Context window: 256,144 tokens
- Max output: 16,384 tokens
- Input: text, video, file, image
- Output: text
- Reasoning: Supported
- Tool calling: Supported
- File input: Supported
- Released: 2026-01-26
- Knowledge cutoff: 2025-11-30
Frequently Asked Questions
What is the context window of Kimi K2.5?
Kimi K2.5 supports a context window of up to 256,144 tokens.
Does Kimi K2.5 support function calling?
Yes. Kimi K2.5 supports tool / function calling.
Does Kimi K2.5 support reasoning?
Yes. Kimi K2.5 is a reasoning-capable model.
What is the knowledge cutoff of Kimi K2.5?
The knowledge cutoff of Kimi K2.5 is 2025-11-30.