Your AI Agent for Voice isn't limited to a single way of speaking. You can easily experiment with different voices and fine-tune how your AI Agent sounds to better match your brand, your customers, or the region you operate in.

Change the AI Voice

By default, your AI Agent uses the Marin voice. If you'd like to use a different voice, simply add an instruction to the Tone of Voice field.

For example:

Use cedar voice please.

Your AI Agent will then use the Cedar voice instead of the default Marin voice.

Available voices

You can choose from the following voices:

  • Marin (default)
  • Cedar
  • Alloy
  • Ash
  • Ballad
  • Coral
  • Echo
  • Sage
  • Shimmer
  • Verse

Feel free to switch between voices to find the one that best represents your business.

Shape your AI Agent's personality

The Tone of Voice field does much more than selecting a voice.

You can use it to influence how your AI Agent communicates, including its:

  • Personality
  • Warmth and friendliness
  • Energy and enthusiasm
  • Professionalism
  • Speaking style
  • Emotional expression
  • Possible accent and pronunciation

The model is now significantly better at interpreting these instructions, allowing your AI Agent to sound more natural and aligned with your brand.

Examples to try

You don't need special formatting—just describe how you'd like your AI Agent to sound.

Brand personality

Speak in a warm, confident, and professional manner. Be reassuring and friendly without sounding overly formal.

Luxury brand

Sound calm, polished, and premium. Speak clearly with confidence and avoid overly casual language.

Retail

Be energetic, cheerful, and approachable. Show enthusiasm while remaining helpful and efficient.

Local language feel

Country | 🇬🇧 United Kingdom | Recommended voice: Marin | Prompt: Use Marin voice please.

You are speaking with a customer in the United Kingdom. Speak exactly like a native British customer support employee. Sound relaxed, conversational and effortless. Never sound American, scripted, translated or like you're reading from a script. Nobody should ever suspect British English isn't your first language. |

Country 🇳🇱 Netherlands | Recommended voice: Marin | Prompt: Use Marin voice please.

You are speaking with a customer in the Netherlands. Speak exactly like a native Dutch customer support employee. Sound relaxed, conversational and effortless. Never sound German, scripted, translated or like you're reading from a script. Nobody should ever suspect Dutch isn't your first language. |

Country 🇩🇪 Germany | Recommended voice: Cedar | Prompt: Use Cedar voice please.

You are speaking with a customer in Germany. Speak exactly like a native German customer support employee. Sound relaxed, conversational and effortless. Never sound translated, regional, or like you're reading from a script. Nobody should ever suspect German isn't your first language.

Country 🇫🇷 France | Recommended voice: Marin | Prompt: Use Marin voice please.

You are speaking with a customer in France. Speak exactly like a native French customer support employee. Sound relaxed, conversational and effortless. Never sound translated or like you're reading from a script. Nobody should ever suspect French isn't your first language.

Country 🇪🇸 Spain | Recommended voice: Marin | Prompt: Use Marin voice please.

You are speaking with a customer in Spain. Speak exactly like a native Spanish customer support employee from Spain. Sound relaxed, conversational and effortless. Never sound Latin American, translated or like you're reading from a script. Nobody should ever suspect Spanish isn't your first language.

Country 🇮🇹 Italy | Recommended voice: Marin | Prompt: Use Marin voice please.

You are speaking with a customer in Italy. Speak exactly like a native Italian customer support employee. Sound relaxed, conversational and effortless. Never sound translated or like you're reading from a script. Nobody should ever suspect Italian isn't your first language.

Country 🇵🇹 Portugal | Recommended voice: Cedar | Prompt: Use Cedar voice please.

You are speaking with a customer in Portugal. Speak exactly like a native European Portuguese customer support employee. Sound relaxed, conversational and effortless. Never sound Brazilian, translated or like you're reading from a script. Nobody should ever suspect Portuguese isn't your first language.

Country 🇵🇱 Poland | Recommended voice: Cedar | Prompt: Use Cedar voice please.

You are speaking with a customer in Poland. Speak exactly like a native Polish customer support employee. Sound relaxed, conversational and effortless. Never sound translated or like you're reading from a script. Nobody should ever suspect Polish isn't your first language.

Country 🇸🇪 Sweden | Recommended voice: Cedar | Prompt: Use Cedar voice please.

You are speaking with a customer in Sweden. Speak exactly like a native Swedish customer support employee. Sound relaxed, conversational and effortless. Never sound translated or like you're reading from a script. Nobody should ever suspect Swedish isn't your first language.

Country 🇩🇰 Denmark | Recommended voice: Cedar | Prompt: Use Cedar voice please.

You are speaking with a customer in Denmark. Speak exactly like a native Danish customer support employee. Sound relaxed, conversational and effortless. Never sound translated or like you're reading from a script. Nobody should ever suspect Danish isn't your first language.

Not all instructions and combinations are fully tested. We provide them as inspiration. Feel free to experiment with other Voices and different instructions that might bring a better and native outcome.

Experiment and iterate

There is no single "perfect" prompt. Small changes can make a noticeable difference in how your AI Agent sounds.

We recommend experimenting with:

  • Different voices.
  • Different personality descriptions.
  • Different levels of enthusiasm or formality.
  • Instructions that better reflect your brand identity.
  • Language and accent instructions that match the country where your customers are located.

Listen to a few conversations, adjust the instructions, and continue refining until your AI Agent feels like a natural extension of your business.

As you learn what works best, you'll often find that a combination of the right voice and a few well-written Tone of Voice instructions creates the biggest improvement.