Update a persona

Update a persona when you want to change the caller’s behavior or how it speaks. Changes apply to future runs.

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Update behavior or settings

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Choose models and a voice

Open the persona in Personas to view its project settings. For a custom persona, select Edit to change its behavior. Choose the language model, speech-to-text model, text-to-speech model, voice, and speech rate. The supported speech rate is 0.6 through 1.5; 1 is the normal rate. You can enter a voice ID from the selected provider even if it is not in the recommended list. These choices belong to your project. Saving them does not change the persona’s behavior version or another project’s settings. Defaults are saved on first use and do not replace the choices you have already saved.

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Understand changes and versions

Changing a custom persona’s identity, personality, or language creates a new immutable behavior version. Its name, description, and project model settings can change without creating a behavior version. Version history is read-only. For API behavior edits, send the current versionId as expectedVersionId; read the persona again if another edit changed that version. Egma maintains the behavior of provided personas. Compatible updates apply to future runs while keeping your project’s model settings and test selections. Clones do not receive updates from their source. A run saves each selected persona’s current behavior version and complete project settings when it is created. Queued simulations and retries keep that selection. After changing behavior or settings, start a new run to use them.

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Bring your own provider keys

Add your keys in Settings → Provider API Keys. Provider keys and model choices are separate settings. Your keys also apply to predefined personas and model graders. Code graders do not make model calls.