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AI Agent’s Personality & TOV

This article explains why defining a clear AI personality and tone of voice is essential for creating consistent, trustworthy, and brand‑aligned customer interactions.

Updated over 2 weeks ago

What’s the importance of having a clear AI personality and tone of voice for customer interactions?

  • Having a well-defined AI personality helps build trust, maintain consistency, and create more meaningful connections with users.

  • Following the concept of “Individuals tend to treat virtual agents as social beings”.

  • It's essential for delivering a cohesive brand experience across all touchpoints.

  • Furthermore, aligning the AI agent's personality with the brand helps define how it should speak, interact, and behave.

    For example, a cosmetics brand may need a warm and empathetic agent, while a bank might require a more straightforward, professional approach rather than a playful one. This personality alignment significantly influences how the agent connects with subscribers.


Let’s look into the intuitive controls that can be fine-tuned to delivering clear, helpful answers that keep customers engaged and satisfied:

🎯 Agent goal

This section aims to help understand the aim of the AI Agent and its use case.

Use this section to briefly state the objective of the AI Agent and to what kind of questions, or use case it should respond to. In other words what falls within the use case or scope of the AI Agent and what falls outside of the scope of the agent.

✨ Agent persona

Think of an AI agent without persona is like a fair ride 🎠 without music or people having fun. Sure, it may still be entertaining, but it won’t be as memorable or as enjoyable of an experience.


Having an AI Agent with a clear persona would help the brand to:

  • Improve the overall customer experience

    Implementing a chatbot persona can produce more natural-sounding conversations, adding personality and a feeling of emotional connection between your customers and your business, ultimately helping to improve the customer experience.

  • Remark brand’s identity

    AI Agent personas extend your brand identity, allowing you to provide consistent, quality AI customer service across channels. By implementing a persona, your AI Agent will reinforce your brand identity—whether answering a customer question or initiating a product search.

  • Saves time

    Setting an AI Agent persona helps your brand to make sure all interactions with your customers feel the same, without having to worry on how the AI Agent would behave in different scenarios/requests.

While AI agent personalities can vary depending on the company they represent, successful personas share common key elements. Here are the essential components to consider:

  • Name: Choose a memorable name that aligns with your brand identity.

  • Tone of voice: Match your AI Agent’s tone to your business needs, whether professional, playful, or friendly. Ensure it reflects your brand by using the right tone of voice.

  • Backstory: Create a relatable background story that resonates with your audience. For instance, an educational supply store's AI Agent could be a beloved retired history teacher with years of experience.

  • Behaviour: Use customer and contextual data to provide personalized customer service. Your AI Agent can address customers by name and reference their recent orders to create meaningful interactions.

⚠️ Latest updates on the agent persona also highlights the importance of inputting in this section specific instructions your AI Agent should follow i.e.:

  • The AI agent can only answer to questions in portuguese

  • Greet users just once and not with every request

  • Add at the end of every request that if the user wants to speak to an agent they should say ‘agent’

🗣️ Tone of voice

These four sliders allow you to customize your AI agent's tone of voice.

Consider adjusting them based on your brand identity and the specific use case of your AI agent.

Fine-tune these settings to match your brand's tone of voice, ensuring customers recognize your brand's personality in WhatsApp conversations.

“Tone is more than just the words we choose. It’s the way in which we communicate our personality. Tone of voice is the way we tell our users how we feel about our message, and it will influence how they’ll feel about our message, too.”

  • Formal vs. casual: Is the writing formal? Informal? Casual? (Note that casual and conversational are not necessarily synonymous, but they do often appear together.)

  • Serious vs. funny: Is the writer trying to be humorous? Or is the subject approached in a serious way? (Note that for our purposes, this dimension was only the attempt at humor. We didn’t evaluate if the writers successfully landed their jokes.)

  • Matter-of-fact vs. enthusiastic: Does the writer seem to be enthusiastic about the subject? Is the organization excited about the service or product, or the information it conveys? Or is the writing dry and matter-of-fact?

Decide what combination of dimensions makes sense best for your company and think about strategies to implement this tone of voice. When you’re defining your tone for a whole site or a specific piece of content, start with these four high-level dimensions first. For example, first decide if a funny, casual tone will work for your brand and your users.

Underneath the sliders, you’ll find the “Example text”. This should give a first look and feel on the voice and tone selected for the AI agent.

Nevertheless, this message should not be taken as a true representation on the communication style of the AI agent but as a guidance to the parameters previously selected.

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