Best AI Voice Assistants for Business: Top Platforms for Automated Phone Calls

AI voice assistants are transforming how businesses handle phone calls, from customer support to booking and lead management. Modern platforms combine real-time voice processing, workflow automation, and system integrations to streamline call operations.

As voice technology advances, capabilities such as automated voiced message and RTT call . This support is becoming increasingly important for businesses that require efficient and reliable call handling, especially in face of problems like restricted call. This guide compares the top AI voice assistants to help you choose the right solution.

Top 10 AI Voice Assistants Comparison Table: TL;DR

What Is an AI Voice Assistant?

AI voice assistants are technological solutions designed to handle phone calls by leveraging advanced speech recognition, natural language processing, and real-time audio capabilities. Unlike consumer-grade smart assistants, these tools are specifically engineered for business-centric workflows. Common business applications include automating customer support inquiries, managing appointment bookings, and streamlining lead qualification processes. Their primary function is to enhance operational efficiency and customer interaction within a phone-based communication framework.

How to Choose the Best AI Voice Assistant?

Selecting the optimal AI voice assistant for a business requires careful consideration of several critical factors to ensure alignment with specific operational needs and strategic objectives. We have tested these platforms, key aspects to evaluate include:

• Voice quality and response latency: The clarity and naturalness of the AI's voice, along with its speed of response, are crucial for a seamless and positive customer experience.
• Inbound and outbound call support: Businesses should assess whether the platform effectively handles both incoming customer queries and outgoing calls for sales or outreach purposes.
• Conversation depth and automation capabilities: The ability of the AI to manage complex dialogues, understand nuanced requests, and automate a wide range of tasks is vital for comprehensive support.
• Integrations with CRM, calendars, and telephony: Seamless integration with existing business systems, such as Customer Relationship Management (CRM) platforms, scheduling tools, and telephony infrastructure, ensures a unified and efficient workflow.
• Ease of setup and deployment speed: The simplicity and rapidity with which the AI voice assistant can be implemented and configured are important for minimizing disruption and accelerating time-to-value.
• Pricing model and scalability: Understanding the cost structure, whether usage-based or subscription, and the platform's capacity to scale with business growth, is essential for long-term financial planning.

Solvea: Best for SMB Call Automation

Solvea is positioned as a robust, business-ready AI voice automation platform specifically engineered for real-world phone workflows, distinguishing itself from tools primarily designed for developer experimentation. It focuses on delivering tangible resolutions rather than merely facilitating conversations, making it ideal for small to medium-sized businesses (SMBs) seeking efficient and effective call automation without extensive technical overhead. It also provides specific solutions like retail, hotel and real estate.

Solvea operates by providing end-to-end voice and workflow automation. It excels in automating a wide array of customer interactions, including customer support, appointment bookings, and lead qualification. The platform integrates voice interactions with broader business workflows, ensuring a seamless operational flow. Designed for rapid deployment, Solvea minimizes the complexity and time typically associated with setting up AI solutions, allowing businesses to quickly implement and benefit from its capabilities.

Solvea allows businesses to set up an AI voice assistant through a clear and structured process. Users first design the agent by defining its role, tone, and primary tasks, such as handling support calls or booking appointments. Next, they connect a knowledge base that includes company information, FAQs, pricing, or policies, so the agent can respond accurately and consistently. Users can then configure integrations and plugins, linking the assistant to tools like calendars or CRM systems. This enables the agent to take real actions during calls, such as scheduling appointments or updating records.

Once everything is configured, the AI voice assistant can run automatically, handling calls according to the defined workflows while businesses monitor and optimize performance over time.

Key points:

• Automates customer support, bookings, and lead qualification: Solvea excels in automating a wide array of customer interactions, from handling routine support queries to managing appointment schedules and qualifying sales leads.
• End-to-end voice + workflow automation: The platform offers comprehensive automation that integrates voice interactions with broader business workflows, ensuring a seamless operational flow.
• Minimal setup required: Designed for rapid deployment, Solvea minimizes the complexity and time typically associated with setting up AI solutions, making it accessible for businesses seeking quick implementation.
• Built for SMB call operations: Solvea is particularly well-suited for small to medium-sized businesses (SMBs) that require efficient and effective call automation without extensive technical overhead.

Vapi: Best for Developers Building Agents

Vapi is a developer-focused voice agent platform built for teams that want full control over how conversational systems are designed and deployed. Rather than offering a ready-to-use business workflow solution, it provides the building blocks needed to create custom voice agents tailored to specific product or application requirements.

To use Vapi, developers typically begin by defining conversation logic and integrating speech recognition, language models, and voice output through its API. Teams can connect their preferred LLM providers and configure prompts, call flows, and response handling according to their own architecture. The platform is then integrated into existing applications or telephony systems, where developers manage deployment, monitoring, and scaling based on usage needs.

Key points:

• API-driven voice agent architecture: Vapi's core strength lies in its robust API, allowing developers to programmatically control and integrate voice agents into their applications.
• Flexible LLM integrations: The platform supports integration with various Large Language Models (LLMs), providing adaptability in conversational AI capabilities.
• Requires engineering resources: Due to its developer-centric nature, Vapi is best utilized by organizations with dedicated engineering teams capable of custom development and integration.
• Suitable for custom voice applications: It is an ideal choice for businesses that need highly customized voice solutions that cannot be met by off-the-shelf products.

Poly AI: Best for Enterprise Contact Center Automation

Poly AI is an enterprise-focused AI voice assistant platform built for large-scale contact center environments. It is primarily used to automate inbound customer service calls, particularly in industries that manage high call volumes and complex service workflows.

Organizations typically begin by defining use cases such as billing inquiries, account management, or service troubleshooting. PolyAI works with enterprises to map conversation flows and integrate the assistant into existing contact center systems. The platform is then connected to backend data sources and telephony infrastructure, enabling it to handle live customer interactions while escalating complex cases to human agents when necessary. Ongoing optimization is usually managed in collaboration with internal operations and IT teams.

Key points:

• Enterprise-grade voice customer support automation: PolyAI provides robust solutions for large organizations, focusing on automating complex customer service scenarios.
• Natural, human-like conversational voice AI: The platform prides itself on its ability to generate highly realistic and natural conversations, enhancing the customer experience.
• Designed for call centers and large support teams: Its features and scalability are geared towards the demanding environments of large contact centers and extensive support operations.
• Strong integrations with contact center systems: Poly AI offers seamless integration with existing contact center infrastructure, ensuring smooth deployment and operation.

Retell AI: Best for Real-time Voice Systems

Retell AI is a real-time voice AI platform focused on low-latency conversational performance. Rather than positioning itself as a complete business automation solution, it primarily serves as a voice infrastructure layer that enables fast and responsive AI-driven conversations.

To use Retell AI, developer teams typically integrate its real-time voice APIs into their existing applications or backend systems. The platform handles streaming audio input and output while connecting to external language models and business logic defined by the development team. Because it operates as an infrastructure component, configuration, orchestration, and workflow management are usually managed externally within the broader system architecture.

Key points:

• Fast streaming voice conversations: Retell AI is built for speed, enabling rapid and fluid voice interactions crucial for dynamic conversational applications.
• Works as infrastructure inside larger systems: It is typically deployed as a backend service, providing real-time voice capabilities to more extensive software solutions.
• Developer-oriented deployment: Similar to Vapi, Retell AI requires technical expertise for integration and deployment, making it suitable for developer teams.
• Strong real-time performance: The platform is engineered for high performance in real-time scenarios, ensuring minimal delays in voice communication.

LiveKit: Best for Engineering Teams

LiveKit is a real-time audio and video infrastructure platform rather than a ready-to-deploy AI voice assistant. It provides the underlying communication layer that enables developers to build voice and video features into their own applications.

To use LiveKit, engineering teams typically integrate its SDKs and WebRTC-based infrastructure into custom systems. Developers handle signaling, media streaming, and scaling through LiveKit, while separately building or integrating AI agents, speech recognition, and language models on top of it. Because LiveKit focuses on communication infrastructure, the conversational logic and automation workflows must be designed and maintained independently.

Key points:

• WebRTC-based communication infrastructure: LiveKit leverages WebRTC to provide robust and scalable real-time audio and video capabilities.
• Requires custom AI agent development: While it offers the infrastructure, businesses need to develop their own AI agents on top of LiveKit to create a complete voice assistant solution.
• Highly scalable real-time audio system: The platform is designed to handle a large volume of concurrent audio streams, making it suitable for applications requiring extensive real-time communication.
• Popular for engineering teams: Its infrastructure-focused nature makes it a preferred choice for engineering teams looking to build custom communication solutions from the ground up.

Why Solvea Stands Out?

Solvea distinguishes itself in the crowded AI voice assistant market through its unique combination of features and strategic positioning, particularly for businesses seeking immediate and impactful call automation solutions. Its key differentiators include:

• Built specifically for business call automation: Unlike more general-purpose AI platforms or developer tools, Solvea is purpose-built to address the specific challenges and requirements of business call operations. This specialized focus ensures that its features and functionalities are directly aligned with enhancing call center efficiency and customer service.
• Combines voice, AI, and workflow automation in one platform: Solvea offers a holistic solution that integrates voice interaction capabilities with advanced AI and comprehensive workflow automation. This end-to-end approach means businesses can manage entire call processes, from initial customer contact to resolution and follow-up, all within a single, unified platform.
• Faster deployment compared to developer-centric tools: One of Solvea's significant advantages is its ease and speed of deployment. Designed for minimal setup, it allows businesses to quickly implement and benefit from AI voice automation without the extensive technical resources or development cycles often required by API-driven or infrastructure-focused solutions like Vapi or LiveKit. This makes it an ideal choice for SMBs looking for rapid time-to-value.

Conclusion

For businesses prioritizing rapid deployment and comprehensive, end-to-end call automation with minimal technical overhead, choose Solvea.

For developers aiming to build highly customized voice agents with flexible LLM integrations, choose Vapi.

For enterprises requiring robust contact center automation and human-like conversational AI, choose Poly AI.

For those needing low-latency, real-time voice infrastructure within larger systems, choose Retell AI.

For engineering teams looking to build custom communication solutions from the ground up, choose LiveKit.

Choosing the right AI voice assistant hinges on a business's specific needs and technical capabilities. The market offers a diverse range of solutions, from turnkey platforms like Solvea that offer quick time-to-value for business-ready automation, to developer-centric tools such as Vapi and LiveKit that provide the flexibility for highly customized implementations. Ultimately, the optimal choice will align with the organization's operational scale, technical resources, and strategic objectives for customer interaction and efficiency.

FAQ

1. What is the best AI voice assistant for business calls?

The best AI voice assistant depends on your specific business needs. Platforms like Solvea are designed for ready-to-use call automation, offering quick deployment and end-to-end solutions for businesses. In contrast, developer-focused tools such as Vapi or LiveKit provide greater customization options but require more technical resources for implementation.

2. Are AI voice assistants able to replace human agents?

AI voice assistants are most effective when used to handle repetitive and high-volume calls, significantly improving efficiency and reducing operational costs. However, human agents remain crucial for managing complex, sensitive, or highly nuanced conversations that require empathy, critical thinking, and advanced problem-solving skills.

3. Do AI voice assistants support inbound and outbound calls?

Most modern AI voice assistants are equipped to support inbound calls, efficiently handling customer inquiries and support requests. The capability for outbound calling varies by provider, with some platforms offering robust features for sales, outreach, and proactive customer engagement, while others may have more limited outbound functionalities.

4. Is an AI voice assistant difficult to set up?

The difficulty of setting up an AI voice assistant largely depends on the chosen platform. End-to-end solutions like Solvea are typically designed for ease of deployment, featuring minimal setup requirements to enable rapid integration into existing workflows. Conversely, developer-first frameworks often demand more technical expertise and configuration, leading to a more involved setup process.

5. How are AI voice assistants priced?

Pricing models for AI voice assistants commonly vary. Many platforms adopt a usage-based pricing structure, where costs are determined by factors such as call minutes or conversation volume. Additionally, some providers may charge extra for advanced features, premium integrations, or specialized functionalities, offering tiered plans to accommodate different business scales and needs.