# Kimi K1.5

Kimi K1.5 is an AI model released by Moonshot AI on Jan 20 2025. It has a 128k context window.

## Facts

| Field | Value |
| --- | --- |
| Model | Kimi K1.5 |
| Developer | Moonshot AI |
| Release date | Monday, Jan 20 2025 |
| Licensing | Proprietary |
| Context window | 128k |

## Questions and answers

### When was Kimi K1.5 released?

Kimi K1.5 was released by Moonshot AI on Monday, Jan 20 2025.

### Who made Kimi K1.5?

Kimi K1.5 was built by Moonshot AI. Chinese AI company building the Kimi family of models. Founded in 2023, known for long-context and efficient MoE architectures.

### What is the context window of Kimi K1.5?

Kimi K1.5 has a context window of 128k. That is the maximum amount of input plus output the model can hold in a single request.

### Is Kimi K1.5 open source?

No. Kimi K1.5 is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

### What came before and after Kimi K1.5?

Moonshot AI's previous tracked release was Kimi Chat on Oct 9 2023, 469 days earlier. It was followed by Kimi-VL on Apr 10 2025.


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Canonical page: https://aireleasetracker.com/model/moonshot/kimi-k1.5
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Most benchmark scores come from lab launch material; gathered results identify the leaderboard that published them.