> This page is for version v1.3 (default).
> For other versions, use one of these documentation indexes:
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> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.twelvelabs.io/llms.txt.
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## Pegasus 1.2 has been removed

Use Pegasus 1.5 for all video analysis. The platform now rejects any request that specifies Pegasus 1.2, and uses Pegasus 1.5 by default when you omit the `model_name` parameter.

This change affects the following:

* **Analysis**: The `/analyze` and `/analyze/tasks` endpoints accept only Pegasus 1.5.
* **Index creation**: You cannot create an index with Pegasus 1.2.
* **Existing indexes**: You can no longer add videos to an index that has only Pegasus 1.2 enabled. When you add videos to an index that has both Marengo and Pegasus 1.2 enabled, the platform indexes them with Marengo only.

### Actions required

Migrate your integration to Pegasus 1.5. Follow the steps in the [Migration guide](/v1.3/docs/get-started/migration-guide).

### Support

For migration assistance, contact our support team at [support@twelvelabs.io](mailto:support@twelvelabs.io).