# Release Phases
source: https://docs.chalk.ai/docs/release-phases

## What Private Preview, Public Preview, General Availability, and Deprecated mean.

Chalk labels features by release phase so you know what meets our quality standards for General Availability (GA). A feature can skip phases, and a preview feature isn't guaranteed to reach GA.

|                         | Private Preview                                         | Public Preview                                          | General Availability                                                |
| ----------------------- | ------------------------------------------------------- | ------------------------------------------------------- | ------------------------------------------------------------------- |
| **Who can use it**      | Invited customers.                                      | All customers.                                          | All customers.                                                      |
| **Production use**      | At your own risk.                                       | At your own risk.                                       | Supported.                                                          |
| **Changes and removal** | Can change or end at any time, possibly without notice. | Can change or end at any time, possibly without notice. | Advance notice of breaking changes and removal, per your agreement. |
| **Support and SLA**     | Best-effort. No SLA.                                    | Best-effort. No SLA.                                    | Per your agreement.                                                 |

Deprecated features aren't enabled for new accounts. Their docs give a removal date and, where one exists, a migration path.

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