8 Best AI Phone Answering Services in 2025

One of the biggest challenges for businesses today is missed calls. Every unanswered call could mean a lost opportunity, frustrated customers, and reduced revenue. Traditional phone systems, long menus, and busy receptionists often leave clients waiting or frustrated.

This is where AI phone answering services come in. These systems use artificial intelligence to answer calls, conduct human-like conversations, and route inquiries efficiently. By automating routine tasks, businesses can ensure that every call is handled promptly day or night.

What Is an AI Phone Answering System?

An AI phone answering system is an advanced technology that automatically answers incoming calls and interacts with callers just like a human receptionist. Using artificial intelligence, natural language processing (NLP), and voice recognition, it can understand questions, provide accurate responses, take messages, schedule appointments, and route calls to the right department or agent.

Unlike traditional automated phone menus, modern AI systems can carry out human-like conversations, personalize interactions based on caller history, and work 24/7 to ensure no opportunity is missed. These systems are especially valuable for businesses looking to improve customer service, increase efficiency, and reduce the need for full-time reception staff.

Why Use an AI Phone Answering System in 2025?

Businesses are increasingly adopting AI phone answering systems because they:

• Handle routine tasks automatically: AI can answer FAQs, schedule appointments, and take messages, freeing human agents for complex matters.
• Manage high call volumes: AI systems can handle hundreds of calls at once without sacrificing quality.
• Work 24/7: Never miss a call, even outside business hours.
• Improve sales and customer experience: Personalized interactions increase conversions and satisfaction.
• Record and transcribe calls: Every conversation is documented for insights and quality control.
• Deliver human-like personalization: Advanced AI can simulate natural conversations, improving engagement and trust.

In 2025, businesses that fail to implement a robust AI phone answering service risk losing leads and falling behind competitors who provide faster, smarter service.

8 Best AI Phone Answering Services in 2025

Here’s our carefully curated list of the top AI phone answering systems, highlighting features, use cases, and advantages.

1. MosaicX Engage – Best Overall and for Enterprises

MosaicX Engage is a powerful AI platform designed to mimic human conversations. It understands context, tone, and customer intent, providing accurate, natural responses that feel personalized.

Why it stands out:

• Handles routine tasks like answering questions, checking orders, and making payments.
• Integrates with CRM systems and dashboards to track customer interactions.
  
• Learns and improves over time with every call.
  

Best for:  Enterprises and large teams looking for a full featured AI phone answering system.

2. Zendesk Answer Bot – Best for Zendesk Users

Zendesk Answer Bot integrates seamlessly with the Zendesk ecosystem, leveraging billions of previous interactions to understand customer needs automatically.

Key features:

• Generates call transcripts and summaries for agents.
  
• Supports intelligent routing to the right department or agent.
  
• Works across voice, chat, and email channels for a unified experience.

Best for: Businesses already using Zendesk for support and customer management.

3. RingCentral Virtual Receptionist – Best for RingCentral Users

RingCentral is a trusted name in business communications. Its virtual receptionist AI provides human-like conversations, routing calls and answering queries accurately.

Highlights:

• Handles appointment scheduling, FAQs, and escalations.
  
• Integrates with CRMs to access customer data for personalized responses.
  
• Tracks call performance to improve engagement over time.

Best for: Businesses using RingCentral phone systems.

4. PlayAI – Best for Multilingual Support

PlayAI is designed for businesses with a global customer base. It offers over 900 voices and supports 143 languages, allowing businesses to create AI virtual receptionists that sound natural and human-like.

Features:

• Records your voice to create a custom virtual assistant.
  
• Learns from every interaction to improve responses.
  
• Integrates with customer management software for easy workflow automation.

Best for: Businesses serving international clients or multiple languages.

5. Five9 – Best IVA for Contact Center Providers

Five9 is a contact center platform that offers AI-powered virtual agents. It focuses on automating repetitive tasks, freeing live agents for complex customer interactions.

Advantages:

• Pre-defined IVA templates for fast deployment.
  
• Drag and drop interface for custom call flows.
  
• Human sounding voices and text to speech options.
  

Best for: Existing Five9 users and contact center teams looking to reduce agent workload.

6. Abby Connect – Best for Human + AI Hybrid

Abby Connect combines real receptionists with AI technology. The AI analyzes calls to improve customer service while human agents handle more personalized conversations.

Benefits:

• 24/7 availability with AI automation.
  
• Automates routine tasks like appointment scheduling and surveys.
  
• Provides a premium, personalized experience.

Best for:  High-end retail, legal, or medical businesses where personal touch matters.

7. IsOn24 – Good for Smaller Businesses

IsOn24 offers an AI-driven voice assistant and virtual receptionist with over 50 life-like voices and accents.

Key points:

• Simulates human conversations naturally.
  
• Manages calls, texts, and reminders efficiently.
  
• Easy integration with customer management and scheduling apps.

Best for:  Small to medium-sized businesses, freelancers, and service providers.

8. Slang.ai – Best for Restaurants

Slang.ai specializes in supporting restaurant and hospitality businesses. Its AI assistant can manage reservations, answer customer questions, and adapt to the caller's tone in real time.

Highlights:

• Works 24/7 to answer calls and take reservations.
  
• Learns from previous interactions for better responses.
  
• Transfers complex calls to human agents when needed.
  

Best for:  Restaurants and food service businesses seeking 24/7 automated support.

Challenges and Limitations

While AI phone answering systems offer major benefits, businesses should be aware of potential challenges:

• Accents or unusual speech patterns may cause misinterpretations.
  
• AI lacks emotional intelligence for sensitive or complex calls.
  
• Privacy and data compliance (GDPR, CCPA) must be carefully managed.
  
• Over automation may frustrate customers who prefer human interaction.

The most effective solution is often a hybrid approach, combining AI efficiency with human oversight.

Future Trends for AI Phone Answering

• Unified AI Systems: Integration of voice, chat, and text for seamless communication.
  
• Advanced Lead Qualification: AI identifies high value calls for prioritization.
  
• Custom Brand Voices: AI can be trained to reflect a business’s unique tone.
  
• Enhanced Multilingual Support: AI better handles multiple languages and accents.
  
• Human-AI Collaboration: AI handles routine tasks while humans manage complex interactions.

Conclusion

The best AI phone answering systems in 2025 are transforming how businesses interact with customers. From enterprise solutions like MosaicX Engage to niche focused tools like Slang.ai, AI answering services improve efficiency, customer satisfaction, and revenue opportunities.

ChatArm provides AI chat automation, lead qualification, 24/7 customer support, and appointment scheduling, helping businesses capture leads and streamline workflows efficiently. The platform also offers AI call analytics and actionable insights, enabling companies to monitor interactions and optimize performance.

While AI phone answering systems are not yet available, this feature is coming soon, promising a fully integrated solution for managing calls alongside chats, scheduling, and lead management, giving businesses a complete automation ecosystem for 2025 and beyond.

FAQs About AI Phone Answering System