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AI-powered voice bots are becoming tremendously popular as more businesses and organizations are looking for ways to automate their customer service operations and deliver support 24/7 while also reducing support-related costs. That’s exactly where AI voice bots come in incredibly helpful. Let’s take a closer look at how these solutions can streamline your customer service operations along with some of the best AI voice bot providers currently available on the market.

What are AI Voice Bots?

AI voice bots (also referred to as AI voice agents, AI phone agents, or AI voice assistants, to name just a few) are AI-powered automated systems that can engage in spoken conversations over the phone or other voice channels. 

They are designed to understand spoken language and respond naturally, just like human agents would. In customer service environments, AI voice bots can answer and handle inbound phone calls independently, respond to common questions, and even take actions like scheduling appointments or updating CRM records. Some AI voice bot solutions are also able to make and handle outbound calls independently for proactive service, reminders, or surveys.

AI voice bots are backed up by technologies like:

• Automatic Speech Recognition (ASR)

• Natural Language Understanding (NLU)

• Natural Language Processing (NLP)

• Natural Language Generation (NLG)

• Text-to-Speech (TTS) Synthesis

How Can AI Voice Bots Help in Customer Service Environments?

Here’s how AI voice bots can be effectively used for automating customer service operations and processes:

• Answer customer service calls 24/7: AI voice bots can operate around the clock and handle incoming service requests automatically when your human reps aren’t available, ensuring no call ever goes unanswered. That helps you reduce wait times and improve customer satisfaction, as today’s consumers have come to expect immediate support.

• Perform actions beyond answering basic FAQs: AI voice bots don’t just excel at answering common questions, they can actually perform specific actions like updating customer records in your CRM, booking meetings, processing orders and transactions, managing subscriptions, and so much more, reducing the load on your support team.

• Handle increased call volumes without hiring more staff: AI voice bots can easily handle hundreds or even thousands of simultaneous calls with no impact on call quality – and scale when needed. That allows you to handle increased call volumes effectively without having to hire additional call center reps.

• Deliver multilingual customer support: AI voice bots can provide customer support in multiple languages. Some of the top AI voice bot providers support hundreds of languages and dialects. That makes them excellent solutions for globally operating businesses and eliminates the need to hire native-speaking agents.

• Automate proactive notifications and survey collection: With AI voice bots that can initiate and handle outbound calls, you can reach out to your customers proactively and automate processes like reminders, service notifications, or post-purchase survey collection.

• Reduce customer support costs: With the ability to handle thousands of concurrent calls, deliver support in multiple languages, and resolve issues without involving human reps, AI voice bots help reduce support costs. In fact, according to a report by IBM, businesses using AI-based virtual agents can reduce customer service costs by up to 30%.

Top 5 Best AI Voice Bots for Customer Service in 2025

VoiceSpin AI Voice Bot

VoiceSpin offers an AI voice bot solution that can handle both inbound and outbound calls automatically, answer common questions about your products or services, give recommendations, schedule appointments, process orders, and perform other actions through third-party integrations and APIs. It supports hundreds of languages, handles thousands of concurrent calls, and transfers interactions to human agents with full conversation context.

What’s particularly distinctive about VoiceSpin is that it doesn’t just offer an AI voice bot solution. You actually get a complete contact center software platform with VoIP telephony, AI speech analytics, an AI predictive dialer, omnichannel messaging, an AI chatbot, and other tools along with the voice bot.

Key Features: 

  • Support for 100+ languages and dialects
  • Contextual transition to human agents
  • Intelligent interruption handling
  • Integrations with third-party tools and API support
  • AI speech analytics with call transcription and summaries

Poly AI Voice Bot

PolyAI enables you to build and deploy AI voice assistants for enterprise customer service. It is specifically designed to handle large volumes of customer service calls across industries like insurance, finance, healthcare, telecom, and others. It can handle both inbound and outbound calls, answer FQAs, book appointments, process payments, collect customer feedback, and perform other actions thanks to integrations with third-party apps. 

Poly AI voice bot is multilingual and can escalate calls to human reps without losing conversation context. Plus, with real-time reporting features, you can instantly track your voice bot’s performance.

Key Features: 

  • Support for 45+ languages
  • Natural speech synthesis
  • Seamless transfer to human agents
  • Real-time analytics and reporting
  • Integrations with third-party apps

Cognigy AI Voice Bot

Cognigy’s solution is primarily suitable for enterprises handling high call volumes. It doesn’t provide its own telephony but allows you to integrate with the most popular telephony providers and other third-party apps. Cognigy’s AI voice bot automates inbound and outbound calls, supports 100+ languages, handles thousands of simultaneous calls, and transfers calls to human reps while preserving context.

Unlike other platforms, Cognigy offers on-premise, private cloud, or SaaS deployment options based on your needs.

Key Features: 

  • Intuitive flow editor interface
  • Support for 100+ languages
  • Reporting and analytics
  • Contextual call hand-offs to human reps
  • Third-party integrations and APIs

4. Synthflow AI Voice Bot

Synthflow offers a no-code AI voice bot builder with a user-friendly drag-and-drop interface, which makes it a suitable solution for non-tech users. Synthflow’s AI voice bot can handle inbound and outbound calls independently, manage orders, book appointments, update customer records in CRM, and perform other actions. The bot is multilingual, it can handle dozens or hundreds of concurrent calls, and seamlessly route calls to human agents.

What’s great about Synthflow is that it offers lots of pre-built templates that you can edit based on your business needs. 

Key Features: 

  • Drag-and-drop voice bot builder
  • Support for 30+ languages
  • Native and custom integrations
  • Contextual call transfer to human reps
  • Call transcription

5. Regal AI Voice Bot 

Regal provides a no-code voice bot builder, allowing you to create AI voice bots with no tech knowledge. Regal’s AI voice bot automates inbound and outbound calls, escalates complex queries to human reps, handles high volumes of concurrent calls, and supports dozens of languages. You can use it to automate processes like answering FAQs, appointment scheduling, service dispatch calls, follow-ups, and reminders. It’s suitable for industries like finance, healthcare, insurance, education, and consumer services.

With Regal, you can either select a voice from the supported TTS (Text-to-Speech) providers or clone your own voice. Moreover, you can A/B test different voices in production and see if certain voices perform better.

Key Features:

  • No-code voice bot builder
  • A/B testing tools
  • Support for 30+ languages
  • Contextual call transfer to human agents 
  • Integrations with third-party apps

Features to Look for When Evaluating AI Voice Bot Providers for Customer Service

Not all AI voice bots deliver the same value. When evaluating different AI voice bot providers, check whether the following features and capabilities are available: 

  • Ability to handle both inbound and outbound calls: Outstanding customer service isn’t just reactive. If you want to be able to reach out to your customers proactively – whether it’s for reminders, urgent notifications, or follow-ups – look for an AI voice bot solution that can initiate outbound phone calls automatically.
  • Contextual escalation to human agents: While voice bots can effectively handle simple support issues and transactions, human support remains critical for complex issues. Make sure the solution is able to seamlessly escalate conversations to human reps without losing any context so customers don’t have to repeat themselves.
  • Ability to handle multiple concurrent calls and scale when needed: If you want to eliminate wait times and ensure your customers get immediate support, choose a solution that can handle large amounts of concurrent calls and easily scale up when your call volumes grow.
  • Support for multiple languages and dialects: For businesses with truly global call center operations, multilingual capabilities are essential. Multilingual AI voice bots can instantly identify the language a customer speaks and switch to that language. It allows you to deliver multi-language support without having to expand your team globally. 
  • Integrations with third-party tools for custom workflows: The bot’s ability to integrate with CRM systems, calendar apps, productivity tools, and other third-party systems is what enables it to take real actions within these integrated systems beyond simply answering questions. Make sure to choose a provider with an extensive library of third-party integrations and API support for building custom workflows.

Get Started with AI Voice Bots Now and Automate Your Customer Service Operations

With the ability to handle thousands of simultaneous calls, interact with customers in different languages, and resolve customers’ issues without human intervention, AI voice bots are completely reshaping the way today’s call centers operate. They can automate your customer service operations, improve customer experience by offering immediate round-the-clock support, reduce the load on your support team, and ultimately help you cut down on your support costs. If you’ve been thinking about adding an AI voice bot to your existing customer support channels – now is the best time to get started.