# Moonshot AI Kimi Thinking Preview — deprecation status

> Yes — Kimi Thinking Preview is retired. Moonshot AI shut it down on November 11, 2025; API requests to it now fail. The recommended replacement is Kimi K2.6.

Moonshot's first reasoning model, a multimodal preview released in May 2025 at a price several times the rest of the range. It is the oldest entry in Moonshot's discontinued table, switched off on 11 November 2025, six months after it appeared.

## Facts

| Field | Value |
| --- | --- |
| Provider | Moonshot AI |
| Model id | `kimi-thinking-preview` |
| Status | Retired |
| Shutdown | November 11, 2025 (265 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-thinking-preview"
+ "model": "kimi-k2.6"
```

## FAQ

### When did Moonshot AI Kimi Thinking Preview shut down?

Moonshot AI Kimi Thinking Preview shut down on November 11, 2025. API requests to it fail from that date onward.

### What replaces Moonshot AI Kimi Thinking Preview?

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

### Is Moonshot AI Kimi Thinking Preview still available?

No. Moonshot AI Kimi Thinking Preview is retired and no longer served — it was shut down on November 11, 2025. Calls to it return an error.

### How do I migrate from Moonshot AI Kimi Thinking Preview to kimi-k2.6?

Swap the model id in your API call: replace "kimi-thinking-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-thinking-preview
JSON: https://modeldeprecations.dev/api/v1/models/moonshot/kimi-thinking-preview.json