# gen4_aleph

Calls to the model gen4_aleph on Runwayml stopped working on July 30, 2026.

On July 30, 2026, the model gen4_aleph stopped working and is no longer available on Runway Dev. Calls using the model gen4_aleph fail after this date. This change affects all requests relying on that model identifier.

- API: Runwayml (api.dev.runwayml.com)
- Model: gen4_aleph
- Kind: Model retirement
- Announced: July 30, 2026
- Takes effect: July 30, 2026
- Calls after that day: fail
- Calls it hits: `model gen4_aleph`
- Source: [Changelog](https://docs.dev.runwayml.com/api-details/api_changelog/)
- Page: https://www.okapi.bot/models/runwayml/gen4_aleph/

## What to use instead

Upgrade from Gen-4 Aleph to Aleph 2.0 (aleph2), or switch from Gen-3 Alpha Turbo to Gen-4.5 for best quality or Gen-4 Turbo for fastest processing.

## Runwayml's words

> Gen-3 Alpha Turbo ( gen3a_turbo ) and Gen-4 Aleph ( gen4_aleph ) are no longer available on Runway Dev. Requests that use these model identifiers will fail.