> ## Documentation Index
> Fetch the complete documentation index at: https://wb-21fd5541-serverless-sft-revamp.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Model Lifecycle

> Learn about W&B Inference model lifecycle and retirement


New models are frequently evaluated and released as part of the W\&B Inference catalog.

Older models are regularly reviewed and may be retired to prioritize the most in-demand and highest-quality offerings.

## Model Lifecycle Stages

Models in W\&B Inference use the following terminology for the stages of their lifecycle:

* **Generally Available**: The model is fully supported and is recommended for use.
* **Deprecated**: The model is scheduled for removal. Customers should update to a recommended replacement as soon as possible.
* **Retired**: The model is no longer available. Any requests to retired models fail and return an `HTTP 404` status code for all requests.

## Deprecation Process

When deprecating a model, W\&B will provide at least two weeks of notice on this page before the model is retired.

We additionally attempt to notify recent users of a deprecated model via email
and provide recommendations for replacement models.

Models that are in the **deprecated** stage continue to serve requests.

## Deprecated Models

The following W\&B Inference models are **deprecated**:

| Deprecation date | Retirement date | Model ID                           | Recommended replacement       |
| ---------------- | --------------- | ---------------------------------- | ----------------------------- |
| 2026-02-12       | 2026-03-03      | `moonshotai/Kimi-K2-Instruct`      | `moonshotai/Kimi-K2.5`        |
| 2026-02-12       | 2026-03-03      | `moonshotai/Kimi-K2-Instruct-0905` | `moonshotai/Kimi-K2.5`        |
| 2026-02-12       | 2026-03-03      | `zai-org/GLM-4.5`                  | `zai-org/GLM-5-FP8`           |
| 2026-02-05       | 2026-03-03      | `Qwen/Qwen2.5-14B-Instruct`        | `OpenPipe/Qwen3-14B-Instruct` |