Drellia Voice

Set up an AI voice agent: prompt, voice and language

You set up a Drellia voice agent the way you brief a new team member: what the call is for, the checks to make, what it may offer and the tone to keep. Then you pick the voice it speaks with and the language it speaks.

The playbook stays in plain words that your team can read and change, and you can hear the result in a test call before any customer does.

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Drellia voice agent settings with the voice picker open, listing voices tagged for sales, appointment booking, debt collection and confirmations
Voice agent setup: preview each voice and choose the one that fits the call.
Drellia voice agent prompt editor with sections for goal, identity check, balance and options, and tone
The prompt, in plain words: the goal, the identity check, what the agent can offer and its tone.
What you get

Everything the agent needs to know

  • A prompt in plain words

    Write the agent's instructions in your own words, with variables that are filled in with each contact's details.

  • A voice that fits the call

    Search voices, filter them by use case such as debt collection, sales or appointment booking, and preview each one.

  • Language, speed and model

    Set the language the agent speaks, its speaking speed, the voice model (quality, balanced or fast) and the language model.

  • Demo call from the browser

    Talk to the agent through your microphone, with a live transcript, before it calls anyone. You can also place a test call to a real phone.

  • Inbound calls

    Let the agent answer calls to an inbound phone number as well as place outbound calls.

How it works

From brief to a tested agent

  1. 01

    Write the brief

    Describe the goal of the call, the checks to make, what the agent can offer and its tone.

  2. 02

    Pick voice and language

    Preview voices, choose one, and set the language and speed.

  3. 03

    Try it

    Run a demo call from your browser and adjust the prompt until it sounds right.

FAQ

Agent setup: common questions

Do I need to write code?

No. The agent's behaviour is described in plain language in its prompt.

Which languages can an agent speak?

Any language its text-to-speech voice supports, including English and Spanish. Each agent speaks the one language you choose for it.

How do I choose a voice?

Filter the voice list by use case or gender, listen to a preview and pick the one that fits the call.

Can I try the agent before launching a campaign?

Yes. Run a demo call from your browser, or place a test call to a real phone.

AI voice agentsCampaignsUpload a CSV, set schedule, working hours, retries and concurrent calls, and follow results live.AI voice agentsOutcomes and transcriptsEach call ends with an outcome, the recording and the full transcript, ready to review or audit.Conversation analytics chatKnowledge baseAnswers about your policies and procedures from your own documents, with the sources listed.

Brief an agent with us and hear it on a call

Book a 20-minute walkthrough and see it with examples from your own industry.

Book a demo