How to create an AI voice agent?

What Is an AI Voice Agent and Why Should You Build One?

An AI voice agent is an intelligent, speech-powered system that uses STT, NLU, and TTS to engage users in real-time, human-like conversations over phone or web channels. These agents help businesses scale support, sales, and engagement using natural, context-aware dialogue.

• Delivers real-time conversations – AI voice agents convert spoken language into text and back into speech using advanced STT and TTS models powered by tools like ElevenLabs and OpenAI.
• Handles 24/7 customer interactions – These agents automate voice support, appointment bookings, and lead capture without the need for live agents—ideal for industries like healthcare, finance, and SaaS.
• Adapts to tone and intent – Unlike traditional IVRs, modern voice bots understand emotions, context, and intent using voice interaction models, enhancing user satisfaction.
• Supports voice cloning and customization – Tools like the OpenAI Voice API and ElevenLabs API enable dynamic, branded voice synthesis tailored to your organization.
• Builds without coding – Platforms like Appy Pie's AI voice agent allows you to build, train, and deploy AI voice bots with no-code workflows, real-time previews, and CRM integrations.
• Provides a competitive edge in 2025 – Creating a conversational AI agent helps you future-proof operations, boost automation, and meet rising expectations for voice-first experiences.

For a deeper dive into how AI voice agents work and real-world use cases, check out our complete guide: What Are AI Voice Agents?

What Tools Do You Need to Build an AI Voice Agent?

To build an AI voice agent, you need tools for voice input/output, natural language processing, integrations, and no-code development to streamline deployment and management. These platforms allow you to design, train, and launch scalable voice assistants without needing deep technical expertise.

• Speech-to-Text (STT) engine – Converts the user’s spoken words into text. Providers like OpenAI Whisper or Google Speech-to-Text offer highly accurate transcription in real time.
• Natural Language Understanding (NLU) – Platforms like Dialogflow, Rasa, or Appy Pie Agents process the text input to detect intent and entities for conversational flow.
• Text-to-Speech (TTS) synthesis – Converts the agent’s reply into human-like voice. Use APIs from ElevenLabs, Amazon Polly, or Google Cloud TTS to customize tone and clarity.
• Voice routing and telephony – Services like SignalWire or Twilio handle voice call infrastructure, SIP connections, and VoIP integration to enable real-world calling.
• API integrations with CRMs and backends – Use platforms that connect your voice agent to tools like HubSpot, Zendesk, or internal databases to personalize interactions and retrieve data on demand.
• No-code builder – Solutions like Appy Pie's AI Voice Agent offer drag-and-drop interfaces, pre-built templates, and real-time testing to accelerate production-ready launches.
• Analytics and logging tools – Track user behavior, intent accuracy, and call performance using built-in dashboards or third-party tools like Gladia or Voiceflow insights.

Looking for tools that are already excelling in the space? Explore our curated list of the Best AI Voice Agents in the market today.

What Are the Benefits of Using AI Voice Agents for Businesses?

AI voice agents help businesses automate customer service, reduce response time, scale operations, and provide 24/7 voice support—all while lowering operational costs. These intelligent assistants improve user experience across inbound calls, support lines, and appointment scheduling.

• 24/7 voice support without human staff – AI voice bots never sleep, enabling round-the-clock engagement across global time zones without added payroll.
• Instant response with no wait time – Unlike traditional call centers, AI voice agents can handle multiple users simultaneously, eliminating queue frustrations.
• Personalized customer experiences – Integrated with CRMs or data platforms, voice bots can greet users by name, retrieve previous orders, or schedule appointments contextually.
• Reduced operational costs – By offloading repetitive tasks like FAQ handling, order updates, or appointment confirmations, companies save significantly on live agent staffing.
• Scalable support across regions – Deploying voice AI in multiple languages and channels allows businesses to scale outreach and localization efficiently.
• Consistent tone and compliance – Unlike human agents, AI voice assistants never go off-script, ensuring consistent brand tone and adherence to compliance requirements.
• Valuable analytics and call insights – Platforms like Appy Pie AI Voice Agent provide dashboards to track call metrics, user satisfaction, and conversion rates in real-time.

AI voice bots are just one kind of generative agent. Discover more in our list of Best Generative AI Agents for various industries and tasks.

What Are the Top Use Cases of AI Voice Agents Today?

AI voice agents are being used across industries for customer support, appointment scheduling, lead generation, and more. From healthcare to eCommerce, these bots streamline voice interactions that once required human call centers. Want more inspiration? Browse these real-world AI Agent Examples across industries to see what’s possible with the right automation.

• Customer support automation – Answer FAQs, process refunds, update orders, or escalate to live agents using AI voice interfaces on calls or apps.
• Appointment booking and reminders – Voice agents help schedule, confirm, and remind users of appointments in healthcare, salons, clinics, and service centers.
• Lead qualification and routing – Businesses use voice AI to qualify leads with scripted questions and route them to the appropriate sales reps based on voice input.
• Voice commerce in eCommerce – Shoppers can track orders, ask about delivery windows, and inquire about products via conversational voice assistants.
• Telemedicine support – AI voice bots handle symptom intake, send follow-up reminders, and check patient status post-visit—automating frontline triage.
• Banking and financial services – Voice AI verifies users, shares balance info, provides transaction history, or offers credit card updates using secure voice protocols.
• Education and virtual classrooms – Tutors and students use voice AI to access learning materials, take quizzes, or get reminders—all through natural language prompts.
• HR and internal operations – Companies deploy internal voice agents to answer HR queries, guide onboarding, or collect feedback from team members.
• Voice integrations for accessibility – AI voice agents support users with disabilities by enabling them to navigate apps or websites via speech.
• Call deflection in call centers – Businesses reduce live agent load by letting voice bots handle Tier-1 queries and deflect unnecessary calls.

Want to automate repetitive desktop workflows? Try our Computer Use Agents to build voice-controlled automation tools that interact with your computer environment.

How to Build an AI Voice Agent with Appy Pie AI Agents?

Appy Pie’s AI Agents empowers you to build and launch intelligent AI voice agents effortlessly—without any coding skills. Just follow these straightforward steps to train, customize, and deploy your AI assistant using Appy Pie’s intuitive no-code platform:

Step 1: Get started with Appy Pie AI Agents

Go to Appy Pie AI Voice Agent and click on "Build your own AI Voice Agent".

Step 2: Create an account

Sign up or login with Appy Pie AI Agents to continue generating your AI voice agent.

Step 3: Make changes to the voice agent

In the "Editor" section, you can change the "Welcome Message" as per your needs. Once done, click on "Train GPT".

Step 4: Train the voice agent

In the “Train GPT” section, upload your knowledge base using .csv, .pdf, or .doc files, and train your AI voice agent.

Step 5: Test the voice agent

Once your AI voice agent is trained, you can test it with your desired set of questions and answers.

Step 6: Deploy the AI voice agent

In "Deploy" section, you can deploy voice on boardline number via Twilio paid account and see your AI voice agent in action. You also have the option to deploy voice agent on website.

Step 7: Other settings, integrations and usage

In "Settings" section, you can change the instructions, and voice of the agent. The "Integration" section allows you to connect the agent to different apps, while the "Usage" section provides the information about your balance, interactions, etc.

What Are the Best Practices to Optimize Your AI Voice Agent for Performance?

To deliver a seamless voice experience, your AI agent should be accurate, responsive, and continuously improved using real-world interaction data. Optimization ensures better user satisfaction and higher task completion rates.

• Design short and natural dialogues – Keep interactions concise and conversational. Avoid long monologues or overly robotic responses.
• Use contextual memory for follow-ups – Let your AI voice agent remember prior questions or sessions using session memory features.
• Fine-tune language prompts – Refine system prompts with relevant context to reduce ambiguity and increase accuracy in responses.
• Choose realistic voice synthesis – Use tools like ElevenLabs for human-like text-to-speech output that matches your brand tone.
• Integrate fallback and error handling – Always provide backup replies when your agent doesn't understand a request. This prevents user frustration.
• Enable live agent transfer options – For complex queries, add escalation triggers to connect users to human reps or support staff.
• Track analytics and train continuously – Monitor conversation logs, user drop-offs, and intent success rates to fine-tune performance over time.
• Test across devices and environments – Simulate use cases on mobile, desktop, and smart speakers to ensure cross-platform consistency.

What Are the Common Use Cases for AI Voice Agents Across Industries?

AI voice agents are transforming customer interaction, automation, and support workflows across various sectors by offering 24/7 intelligent voice communication. These agents streamline tasks and reduce operational costs.

• Customer Support & Call Centers – Handle inbound queries, route calls, and resolve FAQs with conversational AI voice bots—improving first-call resolution and reducing human workload.
• Healthcare – Schedule appointments, deliver medication reminders, and provide pre-diagnostic screening through secure and HIPAA-compliant voice AI interfaces.
• Real Estate – Automate property information delivery, qualify leads, and book tours using interactive voice flows available anytime.
• Education – Offer student FAQs, course schedules, and learning modules via voice-powered virtual teaching assistants.
• eCommerce – Use voice agents to confirm orders, track shipping, and handle returns through an intuitive voice-first interface.
• Banking & Finance – Provide account balance info, transaction histories, and payment reminders securely via authenticated voice agents.
• Travel & Hospitality – Enable bookings, answer trip-related queries, and handle itinerary changes conversationally without wait times.
• Government & Public Services – Disseminate information, answer service queries, and manage citizen interactions with multilingual support.

Why Now Is the Best Time to Build an AI Voice Agent?

In 2025, building an AI voice agent is no longer a futuristic idea—it’s a strategic necessity for scaling personalized, real-time communication across industries. The shift toward voice-first experiences is accelerating rapidly.

• AI voice agents increase efficiency – Automate FAQs, customer support, scheduling, and data capture through voice interfaces to reduce human workload.
• No-code platforms make deployment easy – Solutions like Appy Pie Voice Assistantlet anyone build and deploy production-ready voice AI without programming expertise.
• Advanced voice technologies are now accessible – With powerful tools like OpenAI’s voice API, ElevenLabs for speech synthesis, and pre-trained language models, businesses can launch high-quality voice agents in minutes.
• Real-time, contextual conversation drives engagement – AI voice agents that remember user context and deliver dynamic, natural responses provide higher satisfaction and conversion rates.

Whether you're a startup or an enterprise, now is the perfect moment to embrace AI voice automation. Start building your intelligent agent with Appy Pie’s AI Voice Agent today.

Frequently Asked Questions (FAQs)

1. What Are the Future Trends in AI Voice Technology?

   AI voice technology is rapidly evolving to become more human-like, multilingual, and emotionally intelligent. Future trends include contextual memory, real-time language translation, deeper CRM integration, and emotion-aware voice synthesis. Innovations from platforms like OpenAI and ElevenLabs are pushing the boundaries of natural-sounding conversations and personalized engagement.

2. How Do AI Voice Agents Impact Customer Loyalty?

   AI voice agents significantly improve customer loyalty by delivering 24/7 support, faster resolution times, and consistent brand experiences. Personalized responses and instant assistance help build trust and satisfaction, making customers more likely to return and recommend your business.

3. What Are Some Industry-Specific Applications of AI Voice Agents?

   AI voice agents are transforming industries like healthcare, finance, real estate, education, and eCommerce. In healthcare, they assist with appointment scheduling and symptom triage. In finance, they automate account queries. In eCommerce, they track orders and offer product info—all via voice automation that scales without added staff.

4. Are There No-Code Platforms for Building AI Voice Agents?

   Yes, no-code platforms like Appy Pie AI Voice Agent allows anyone to build and deploy powerful AI voice agents without programming skills. These platforms offer drag-and-drop builders, pre-integrated APIs, real-time testing, and multi-channel deployment options for rapid launch and iteration.

5. What Are the Latest Innovations in Voice Cloning and Personalization?

   Voice cloning tools like ElevenLabs API and OpenAI’s Voice Model are making it possible to create custom, branded voices in minutes. These technologies allow businesses to craft voice agents that match brand tone, regional dialects, or even mimic real individuals—enhancing trust and user engagement through highly personalized audio experiences.