Customer support has entered a new era. Rather than having customers wait in long queues or leave voicemails, AI voice agents now handle inquiries instantly, 24/7, and with remarkable human-like qualities. These intelligent systems can process complex requests, transfer to human agents when needed, and learn from every interaction.
If you're looking to elevate your customer support operations, here are the 15 best AI voice agents available today.
1. Tabbly: The Best Overall AI Voice Agent
Why it stands out: Tabbly has established itself as the premier choice for businesses seeking the most advanced and user-friendly AI voice agent platform. It enables teams to build human-like AI voice agents in minutes without requiring technical expertise.
Tabbly excels at serving customers 24/7 with consistent quality and reliability. Unlike human agents bound by fixed schedules, Tabbly's AI voice agents are available around the clock, even on weekends and holidays, ensuring customers always receive prompt responses. The platform combines cutting-edge technology with intuitive design, making it accessible to businesses of all sizes.
Key features include natural voice synthesis, intelligent conversation flows, and seamless CRM integration. Tabbly's voice agents handle scheduling, answer FAQs, qualify leads, and manage routine inquiries with remarkable accuracy. The platform also supports multiple languages and accents, allowing you to create agents that resonate with your diverse customer base.
Best for: Companies seeking an all-in-one solution that balances advanced capabilities with ease of use.
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2. Retell AI
Retell AI brings production-ready performance to your customer support operations. Their platform emphasizes natural, smooth, and empathetic conversations with impressive 500ms latency—meaning customers experience virtually no delay in responses.
The platform supports 18+ languages and can dial to phone numbers across the world. With 99.99% uptime and SOC 2, HIPAA, and GDPR compliance certifications, Retell AI meets enterprise-grade security requirements. Their verified phone number protection prevents calls from being labeled as spam, maintaining your brand reputation while scaling to handle millions of concurrent calls.
Best for: Enterprise customers requiring multilingual support and strict compliance standards.
3. Aircall
Aircall delivers impressive real-world performance with response times under 800ms and 94% accuracy in handling customer inquiries. Users consistently praise its reliability, and Aircall maintains a 4.7/5 rating on G2 for ease of use.
The platform excels at outperforming competitors when handling complex conversations. Aircall integrates seamlessly with existing phone systems and CRM platforms, making adoption straightforward for teams already invested in particular tools.
Best for: Businesses prioritizing speed and accuracy in customer interactions.
4. Bland AI
Bland AI specializes in creating custom, enterprise-grade voice agents that truly represent your brand. Their approach goes beyond generic solutions, allowing you to work with their team to create custom voice, tone, and prompts that sound uniquely yours.
The platform features a transformative LLM-based text-to-speech system that generates lifelike, emotionally intelligent speech with unmatched precision and style control. Bland AI also implements an AI-First security framework, ensuring your operations remain safe and compliant.
Best for: Companies with specific branding requirements and enterprise security needs.
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5. Sierra
Sierra focuses on enabling customers to get answers, solve problems, and take action on any channel, in any language. Their AI agents are designed to be always available, empathetic, and perfectly aligned with your brand voice and tone.
Sierra excels at handling even the most complex customer issues, whether customers need exchanges, returns, account assistance, or technical support. The platform ensures customers receive intelligent, contextual responses regardless of the communication channel.
Best for: Organizations managing complex customer issues across multiple channels.
6. Voiceflow
Voiceflow offers a comprehensive platform for designing, testing, and deploying AI-powered voice agents that are fast, human-like, and scalable. The no-code builder enables teams to create sophisticated voice and chat agents without requiring engineering expertise.
Voiceflow supports rapid scaling—one customer, Trilogy, automated 70% of their Level 1 support tickets across 90 product lines. The platform also excels in regulated industries, as demonstrated by Sanlam's implementation of custom guardrails for financial services.
Best for: Teams seeking comprehensive no-code solutions for both voice and chat agent deployment.
7. Goodcall
Goodcall specializes in agentic voice AI that handles both customer service and sales requests on every phone call. Their platform allows you to launch custom phone AI agents in just minutes without requiring an engineering team.
The platform enables seamless connections to knowledge sources, business tools, and databases, getting your agent operational quickly. Goodcall's focus on simplicity makes it ideal for businesses new to AI voice technology.
Best for: Small to mid-sized businesses seeking quick deployment with minimal technical resources.
8. Synthflow
Synthflow offers AI voice agents that help teams stay available 24/7 while reducing call volume for human representatives and cutting operational costs. Their customers praise how the system saves time and eliminates the dreadful time spent handling routine calls.
The platform is faster to launch, easier to manage, and built to scale according to your growing needs. Synthflow's Jessica AI receptionist handles bookings, rescheduling, and customer questions with warmth and enthusiasm comparable to human agents.
Best for: Customer-facing teams looking to reduce human workload on routine tasks.
9. Fin
Fin represents the highest-performing AI agent available for customer service, delivering higher-quality answers and resolving more complex queries than competing solutions. The platform excels at understanding context and nuance in customer interactions.
Fin's sophisticated reasoning capabilities make it particularly effective for handling edge cases and unusual scenarios that might stump simpler systems. Its advanced natural language understanding ensures customers feel heard and understood.
Best for: Organizations managing high-complexity support scenarios requiring sophisticated reasoning.
10. Vapi
Vapi provides a flexible platform for building and deploying AI voice agents with extensive customization options. The platform supports complex call workflows, intelligent routing, and sophisticated agent logic.
Vapi is particularly popular among developers who want granular control over agent behavior and customization. The platform integrates with numerous third-party services, creating a highly adaptable ecosystem.
Best for: Technical teams requiring deep customization and integration capabilities.
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11. ElevenLabs
ElevenLabs specializes in voice technology, offering sophisticated text-to-speech synthesis that creates remarkably natural-sounding voices. The platform supports numerous languages and accents, enabling agents that sound native regardless of geographic location.
Their voice cloning feature allows you to create a consistent brand voice across support, sales, and onboarding calls. However, ElevenLabs focuses specifically on voice generation, so it's typically paired with platforms like Lindy or Vapi for complete agent functionality.
Best for: Businesses prioritizing voice quality and brand consistency across customer interactions.
12. Deepgram
Deepgram specializes in accurate speech recognition, converting spoken language into text with impressive precision. The platform supports multiple languages and excels at understanding various accents and speech patterns.
Deepgram's speech recognition technology forms the foundation of many AI voice agent implementations, ensuring that customer input is accurately understood before processing. The platform's accuracy directly impacts the quality of subsequent agent responses.
Best for: Implementations requiring highly accurate speech-to-text conversion.
13. Lindy
Lindy offers a comprehensive platform for building voice agents with an extensive feature set that bridges agent logic, phone handling, and call workflows. The platform supports multiple languages and accents, enabling truly native-sounding voice agents.
Lindy's testing and review process ensures that recommended solutions actually perform as advertised. The platform integrates well with ElevenLabs for voice synthesis and Deepgram for speech recognition, creating a complete solution.
Best for: Teams seeking a comprehensive, well-tested platform with integrated solutions.
14. Rossy AI
Rossy AI provides 24/7 AI voice agents built to handle incoming calls with remarkably human-like voices. The platform excels at booking appointments, capturing leads, and managing routine customer interactions.
Rossy AI's strength lies in its ability to mimic natural conversation patterns, making customers feel they're speaking with a capable human representative rather than a machine. The platform scales effortlessly as call volume increases.
Best for: Service businesses, salons, clinics, and booking-intensive operations.
15. Jessica AI (via Synthflow)
Jessica AI represents Synthflow's advanced AI receptionist offering, specifically designed to handle customer interactions with warmth and enthusiasm. The agent seamlessly manages bookings, rescheduling, and customer questions with human-like competence.
Jessica AI excels at recognizing customer intent, extracting relevant information, and routing complex issues to appropriate human handlers. The platform learns from interactions, continuously improving response quality over time.
Best for: Appointment-based businesses and organizations seeking human-like receptionist capabilities.
16. Plivo
Plivo is a powerful cloud communications platform that enables businesses to deploy AI-driven voice agents for scalable customer support. Its AI voice agents handle inbound calls, answer FAQs, route issues intelligently, and integrate seamlessly with CRMs and helpdesk tools. With high call reliability, low latency, and global reach, Plivo is ideal for companies building production-grade AI voice support systems in 2025.
Key Features to Look for in AI Voice Agents
When selecting an AI voice agent for your customer support operation, consider these essential features:
24/7 Availability: Choose agents that operate around the clock without fatigue or scheduling limitations.
Natural Voice Synthesis: Prioritize platforms offering realistic, emotionally intelligent voices that resonate with customers.
Multilingual Support: Ensure your chosen platform supports the languages and accents of your customer base.
Seamless CRM Integration: Look for easy connections to your existing business tools and databases.
Compliance and Security: Verify SOC 2, HIPAA, GDPR, or other certifications required by your industry.
Customization Options: Select platforms offering the level of customization your business needs, from simple to highly technical.
Scalability: Choose systems that grow effortlessly as your call volume increases.
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Conclusion
The AI voice agent landscape offers remarkable solutions for every business size and complexity level. Whether you need a simple no-code solution or an enterprise-grade platform with advanced customization, these 15 options represent the best available in 2025.
Tabbly emerges as the best overall choice, combining advanced AI capabilities with user-friendly design that makes it accessible to teams of all technical skill levels. With its 24/7 availability, natural voice synthesis, multilingual support, and intuitive platform, Tabbly delivers exceptional value for businesses serious about transforming their customer support operations.
Start evaluating your options today, and watch your customer satisfaction metrics improve while your support costs decrease. The future of customer support is conversational, intelligent, and available 24/7—and it's here now.
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1. What are AI voice agents?
AI voice agents use AI, natural language processing, and speech recognition to handle customer inquiries via voice, offering 24/7 support, task automation, and CRM integration.
2. How do AI voice agents compare to human agents?
AI agents provide 24/7 availability, scalability, and cost savings for routine tasks but may transfer complex issues to human agents for nuanced handling.
3. What benefits do AI voice agents offer?
They reduce costs, ensure 24/7 support, scale easily, support multiple languages, deliver consistent responses, and provide analytics.
4. Are AI voice agents secure?
Top platforms like Retell AI and Synthflow meet SOC 2, HIPAA, and GDPR standards. Verify compliance for your industry.
5. Do they integrate with existing systems?
Yes, platforms like Tabbly and Aircall integrate with CRMs (e.g., Salesforce, HubSpot) and helpdesk tools via APIs or pre-built integrations.
6. Is technical expertise required?
No-code platforms like Tabbly and Voiceflow are user-friendly, while Vapi suits developers needing advanced customization.
