Best AI Voice Call Agents to Automate Your Business in 2025

AI voice call agents are reshaping how businesses handle customer support and sales. As of 2025, over 80% of companies with over 10 employees now use AI-powered voice solutions to manage calls. 

Companies need fast, consistent, and scalable support, and AI agents deliver exactly that. Smart voice bots cut costs, work 24/7, and help teams handle more queries without increasing staff. Businesses also see higher satisfaction and fewer missed leads.

This guide explores the best AI voice call agents, how they work, where they fit, and what to consider when choosing one. 

What Is an AI Voice Call Agent?

AI voice call agents are digital assistants that manage inbound and outbound calls using natural, human-like speech. Businesses use them to handle repetitive tasks, qualify leads, schedule appointments, and provide instant responses without human effort.

Companies rely on AI in customer service to reduce wait times, improve response accuracy, and ensure round-the-clock support. Sales teams use these tools to reach more prospects faster, while operations teams automate bookings, confirmations, and reminders.

A top AI voice call agent combines voice recognition, contextual understanding, and real-time decision-making. They boost productivity, reduce costs, and allow teams to focus on high-value interactions.

How Do AI Voice Agents Work?

AI voice agents improve conversations using smart technology that learns, adapts, and scales across industries. Let’s understand how it works:

• Speech Recognition: Converts spoken words into text using trained models, allowing voice bots to process and respond in real time during live calls.

• Natural Language Processing (NLP): Understands customer intent by analyzing the structure and meaning of sentences, enabling relevant and human-like conversations.

• Machine Learning: Learns from previous interactions to improve future responses, helping teams deliver faster resolutions across different queries and scenarios.

• Backend Integration: Connects with tools like CRMs, calendars, and support platforms, making voice bots useful across sales, support, and admin workflows.

• AI Speech Analytics: Tracks tone, sentiment, and keywords during calls, offering insights that improve training, compliance, and customer experience.

• Conversational Intelligence: Summarizes calls, identifies intent, and detects topics to help teams optimize processes and deliver faster solutions at scale.

What Are the Best AI Voice Call Agents To Look For?

Choosing the best AI voice call agents means focusing on tools that offer automation, real-time insights, industry-specific use cases, and multilingual AI support—all with scalable pricing and integrations.

Let’s explore the top solution that meets all these needs:

1. Brilo AI

Brilo AI stands out as a top platform for businesses wanting scalable, human-like AI voice agents. It supports conversational AI, multilingual AI, and 24/7 automation built to reduce workload and improve customer satisfaction. 

Whether you run a small business or a large support center, Brilo adapts quickly with no-code setup, deep analytics, and voice flows designed to automate key customer conversations effectively.

Top Features

• Handles inbound and outbound calls: Supports both types of calls using advanced conversational AI, reducing manual workload and improving customer experience instantly.

• Real-time transcripts and analytics: Provides live call transcription and insight dashboards to help teams monitor conversations and make data-driven improvements efficiently.

• Smart call escalation to humans: It detects when human intervention is needed and routes calls seamlessly without breaking the conversation or customer journey.

• Webhook and CRM integrations: Webhooks allow easy integration with CRMs, calendars, and tools for workflow automation and better operational efficiency.

• Multilingual AI support: Engages callers in different languages, making Brilo a strong choice for global businesses with diverse customer bases.

Use Cases

• Ecommerce support automation: This handles order updates, return processes, and product inquiries, improving efficiency and reducing support tickets in online stores.

• Healthcare appointment scheduling: Books, updates, and reminds patients about appointments, helping clinics minimize no-shows and streamline their schedules efficiently.

• Real estate lead management: Answers property questions, books site visits, and follows up with leads, saving agents hours in daily admin work.

• Hotel guest communication: Manages guest requests, bookings, and recommendations, enhancing hotel guest experience without increasing front desk workload.

Pricing

• Free Plan – $0/month: The Free plan includes 10 minutes, 1 workspace, and 1 agent—ideal for testing voice AI before upgrading.

• Starter Plan – $49/month: Offers 160 minutes, 1 number, and $0.18/min overage—suitable for small teams starting with automation.

• Pro Plan – $149/month: Includes 600 minutes, 3 agents, and $0.16/min overage—designed for growing businesses needing more voice interactions.

• Growth Plan – $499/month: Provides 2500 minutes, unlimited agents, and $0.14/min overage—perfect for scaling operations across teams or departments.

• Custom Plan – Contact sales: Supports 5000+ minutes, unlimited agents, $0.12/min overage, and white-glove onboarding—ideal plan for enterprise-level deployments.

2. Google Dialogflow

Google Dialogflow is a popular platform for creating AI-driven chat and voice agents. Designed for flexibility, it serves enterprises needing powerful conversational automation. Used across travel, banking, retail, and logistics, it offers multilingual support and advanced analytics. 

Two versions—Dialogflow CX (complex workflows) and Dialogflow ES (simple bots)—allow businesses to scale based on technical needs and budgets.

Top Features

• Multilingual support: Supports a global audience using multilingual AI capabilities with automatic language detection and high-quality speech synthesis for natural customer interactions.

• Prebuilt agents and templates: These offer 40+ ready-to-use bots for common use cases like booking, retail, and banking to accelerate deployment time.

• Visual state-based flow builder: Includes a drag-and-drop builder that simplifies flow design for complex interactions, reducing development time by over 30%.

• Generative + rule-based hybrid AI: Combines strict logic with flexible generative AI for more intelligent, grounded, and controlled conversations at scale.

Use Cases

• Banking and financial automation: Automates balance checks, card activations, and loan applications while maintaining compliance and security in regulated industries.

• Travel and airline support: Streamlines booking, cancellations, and itinerary updates with multilingual self-service voice bots for travelers.

• Retail shopping assistants: Provide personalized product suggestions, stock availability, and order tracking using connected retail data sources.

• Telecom customer service: Reduces agent calls by automating plan upgrades, data usage queries, and troubleshooting with intelligent IVR flows.

Pricing

• Dialogflow ES (Essentials): Free up to 180 text and 60 voice minutes per month; paid plans start from $0.002 per request, depending on usage.

• Dialogflow CX (Advanced): Starts at $20 per 100 chat sessions or $45 per 100 voice sessions; includes $600 free credits for first-time users.

3. Amazon Lex

Amazon Lex is another top option that uses the same technology that powers Alexa to create conversational AI voice and chat experiences. It suits developers and businesses building intelligent assistants, chatbots, or IVRs. 

The tool works across apps, contact centers, and voice platforms and integrates smoothly with Amazon Connect. It offers scalable deployment, multilingual capabilities, and AI phone answering system features for self-service and automation.

Top Features

• Natural language understanding with deep learning: Leverages Amazon’s NLP models to recognize intent, slot values, and user inputs with high accuracy across voice and chat interfaces.

• Omnichannel deployment support: Easily deploy bots across web, mobile apps, Facebook Messenger, Slack, SMS, and more to reach users wherever they are.

• Visual Conversation Builder tool: Lets developers and non-technical users collaborate using a drag-and-drop interface to design conversation flows quickly and intuitively.

• Amazon Connect integration: Seamlessly integrates with AWS's cloud contact center, automating voice IVRs and customer interactions with minimal setup.

Use Cases

• IVR automation in call centers: Automates customer queries using natural voice IVRs, helping reduce agent call volume and operational cost by handling common requests.

• Banking and insurance FAQs: Answers user queries about claims, policies, balances, and interest rates with secure, compliant conversational flows.

• Enterprise helpdesk automation: Assists employees with HR, IT, and finance queries, automating password resets, leave requests, and benefits explanations.

• Booking and reservation systems: Enables users to make, modify, or cancel bookings by voice or chat in real-time without human involvement.

Pricing

• Free Tier: Includes 10,000 text requests and 5,000 speech requests per month for 12 months (new users only).

• Text Requests: $0.004 per request for standard text input; billed monthly based on usage beyond free tier limits.

• Speech Requests: $0.0065 per request for voice interactions; supports multiple languages for wider global engagement.

5. Cognigy.AI

Cognigy.AI powers enterprise-grade conversational AI by combining voice, chat, and generative AI into one flexible platform. With agent orchestration, real-time analytics, and advanced reasoning, businesses automate high-volume customer service operations across voice and digital channels. 

Used by brands like Lufthansa and Toyota, Cognigy.AI supports over a billion interactions yearly, making it one of the best AI voice call agents for large-scale transformation.

Top Features

• Multimodal voice and chat experiences: Blends voice, video, images, and text for rich, real-time customer interactions across mobile, desktop, and contact center interfaces.

• Agent orchestration and control: Enables detailed role assignments, workflows, and integrations so businesses control how AI Agents behave in each job scenario.

• Generative AI and structured workflows: This combination of rule-based flows with LLMs like OpenAI enables agents to reason, adapt, and generate human-like responses.

• CRM memory and personalization: AI Agents remember past customer conversations and preferences to deliver personalized experiences across repeated interactions.

Use Cases

• High-volume contact centers: Handles millions of monthly queries across voice, chat, and messaging while scaling easily during peak demand without losing performance.

• Healthcare and insurance agents: Manages patient inquiries, claim updates, and appointment bookings using secure and personalized AI in customer service solutions.

• Ecommerce automation: Processes order updates, returns, and product questions instantly while escalating priority cases to human agents when needed.

• Travel and logistics support: Automates ticket changes, flight rebooking, and package tracking while integrating with backend systems for real-time data accuracy.

Pricing

• Custom Pricing Model: Cognigy does not publish public plans. Pricing depends on use case, scale, hosting choice (SaaS or on-prem), and feature access.

• Flexible Deployment: It offers SaaS, cloud, or on-premise hosting to match the regulatory and infrastructure needs of enterprise organizations globally.

• Enterprise Support: Includes onboarding, training, SLA-backed support, and a Trust Center for compliance (GDPR, HIPAA, SOC2, etc.).

How to Choose the Best AI Voice Call Agent for Your Business?

Choosing smart means choosing what fits. The right platform should reduce effort, drive efficiency, and improve customer service experience from day one. Here are the key factors to look for when deciding:

• Call Volume Handling: Ensure the platform scales with your needs and handles high volumes without delays, helping teams manage spikes in traffic effortlessly.

• CRM and Tool Integration: Pick tools that connect with CRMs, calendars, and apps to automate workflows, reduce manual tasks, and streamline team productivity.

• Analytics and Reporting: Use platforms with AI speech analytics and real-time data dashboards to measure performance, track trends, and drive support improvements faster.

• Regulatory Compliance: Confirm that the solution supports GDPR, HIPAA, and other compliance standards to keep data protected and avoid legal risks.

• Multilingual AI Support: Choose a system with strong multilingual AI capabilities to serve global customers accurately across diverse regions and languages.

• Pricing and Scalability: Look for flexible pricing models that grow with you, offering monthly plans, usage-based billing, and upgrade paths for expanding teams.

FAQs

What is the best AI voice call service?

Brilo AI stands out as the best AI voice call agent for businesses. It offers fast setup, 24/7 support, multilingual AI, and smart analytics that help automate calls and improve the customer service experience.

How to choose the best AI voice call agent?

Start by assessing call volume, integration needs, pricing, compliance, and language support. Choose a platform like Brilo that checks all boxes and offers the best AI tools for customer service automation today.

Are AI call agents expensive?

Most platforms offer flexible pricing. Brilo, for example, starts free and scales affordably, helping businesses reduce support costs while improving efficiency and maximizing ROI with real-time automation and AI speech analytics.

How is Brilo AI the best voice call agent?

Brilo cuts agent workload, boosts CSAT scores by 15%, and automates calls using human-like voice tech, smart CRM integration, and conversational AI designed to deliver better customer support at any scale.