# Moonshot AI Kimi K2 (0905) — deprecation status

> Yes — Kimi K2 (0905) is retired. Moonshot AI shut it down on May 25, 2026; API requests to it now fail. The recommended replacement is Kimi K2.6.

The September 2025 K2 refresh, doubling the context window to 256k and sharply improving front-end code generation. It is the snapshot most K2-era agent frameworks pinned, and it went dark on 25 May 2026 with the rest of the series rather than being kept alive as the last good K2.

## Facts

| Field | Value |
| --- | --- |
| Provider | Moonshot AI |
| Model id | `kimi-k2-0905-preview` |
| Status | Retired |
| Shutdown | May 25, 2026 (70 days ago) |
| Last verified | August 3, 2026 |

## Replacement

- **Kimi K2.6** (`kimi-k2.6`) · recommended — https://modeldeprecations.dev/moonshot/kimi-k2.6
  - Parameters it accepts: https://modelparams.dev/models/moonshot/kimi-k2.6

```diff
- "model": "kimi-k2-0905-preview"
+ "model": "kimi-k2.6"
```

## FAQ

### When did Moonshot AI Kimi K2 (0905) shut down?

Moonshot AI Kimi K2 (0905) shut down on May 25, 2026. API requests to it fail from that date onward.

### What replaces Moonshot AI Kimi K2 (0905)?

Moonshot AI recommends Kimi K2.6 (`kimi-k2.6`) as the replacement for Moonshot AI Kimi K2 (0905).

### Is Moonshot AI Kimi K2 (0905) still available?

No. Moonshot AI Kimi K2 (0905) is retired and no longer served — it was shut down on May 25, 2026. Calls to it return an error.

### How do I migrate from Moonshot AI Kimi K2 (0905) to kimi-k2.6?

Swap the model id in your API call: replace "kimi-k2-0905-preview" with "kimi-k2.6". Keep the rest of the request the same, then re-check the parameters the new model accepts before you ship.

## Sources

- [Kimi model list](https://platform.kimi.ai/docs/models) — accessed 2026-08-03

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Canonical page: https://modeldeprecations.dev/moonshot/kimi-k2-0905-preview
JSON: https://modeldeprecations.dev/api/v1/models/moonshot/kimi-k2-0905-preview.json