According to recent statistics, 90% of innovators say speech-driven technology is the future for call-based businesses; 67% of users say voice bots would improve their interaction experience online.

But choosing the right AI voice agent API or SDK for your business? That’s where it gets tricky. There are many tools in the market that promise everything, but fall short on customization, control, and security.

 

In this blog, we will explore the top 10 AI voice solution providers for your business. Let's get started!

What Is An AI Voice Agent?

AI voice agents are software which use artificial intelligence to understand and reply to us in an interactive way. for speech recognition, process natural language, and respond through spoken language. Using technologies like natural language processing (NLP) and speech recognition, it interpret our spoken language, understands intention, and generate the right responses.

These can be said as the virtual assistant that handles a wide range of tasks from answering queries to booking online appointments. 

Want to know which providers best suit your business requirements? Let’s explore together. 

Who Can Benefit From AI-Powered Voice Agents?

 

Your users don’t want to wait. If you are running a business in customer service, enterprise communication, healthcare or telecommunications, these AI voice agent integrations let your users have faster and more efficient interactions. 

Also, team and social chat platforms can leverage voice agent AI to deliver smarter and real-time conversations. 

Now is the time to know the AI voice agent API and SDK that’s available in the market. 

Top 10 AI Voice Agent API And SDK Providers

1. MirrorFly: The #1 AI Voice Agent Provider

MirrorFly, robust AI voice agent solution built for businesses that need 1000+ customization features and complete communication control. You can build a quick and intelligent voice agent with custom voice API; support on-premise hosting with secure SIP/VOIP calling.

If you don’t have a technical team, you can hire their expert team, who build and manage your app. MirrorFly lets you integrate into web/mobile apps within 48 hours.

Today, 500+ brands trust MirrorFly worldwide and have become a leader in the CPaaS platform. It supports all languages, browsers, and apps. 

What are the key features of MirrorFly?	Takes & Makes Real Calls Handles Inbound Support Calls Human-like, Natural Voice (TTS) Understands & Responds via Voice Real-Time Call Transcription AI-Generated Responses Multi-modal Bot Interaction (Voice + Text) Self-Hosted Model Support Handles Queries Seamlessly Handles Pauses & Interruptions Real-Time APIs Real-Time CRM Interaction (via API)
Use Cases	Telecommunication Customer Support Multi-Party Calling (team discussion) Visitor Management Systems (Gated Community) Audio Streaming Events (large audience engagement) BFSI - Banking, Financial Services & Insurance Digital Native Hospitality Healthcare Real Estate Gaming Restaurant Manufacturing Logistics Construction

In a nutshell, MirrorFly is perfect for enterprises looking for a fully customizable, self-hosted AI voice agent with white-labeled voice & chat solution that offers complete ownership, control over their data.

 

2. ElevenLabs: Most realistic Text to Speech & AI Voice Generator

ElevenLabs is suitable for businesses & content creators who need ultra-realistic voice models for customer service, content creation, and conversational AI. 

With the help of voice cloning and emotion control features, it can give a personalized and human-like experience like never before. Supports multiple languages. 

 

What are the key features of ElevenLabs?	Ultra-realistic voice cloning, preserving tone and emotion Real-time text‑to‑speech with low latency Scalability Security & Compliance Cross-Platform Compatibility
Use Cases	Customer support & IVR systems Audiobooks & multimedia narration

In a nutshell, ElevenLabs helps you to create the most realistic with expressive voices through text-to-speech (TTS) and voice cloning technologies today. 

 

3. Apphitect: Self-hosted Chat API & SDK

Apphitect, an enterprise-grade, fully customizable, self-hosted AI voice solution, provides complete data privacy. It’s known for its high scalability and robust security features.

You can count on Apphitect to build any mobile apps as they provide best-in-class customization services in the UAE & globally since 2008. When it comes to mobile chat app development, providing highly secure messengers for corporates is our key focus. 600+ apps delivered successfully so far. 

 

What are the key features of Apphitect?	Group Calls Connection Status Call Muting Audio Output Selection Incoming Call Notifications Call History Active Speaker Detection One-to-One Call Full Control of User Data Deployment Flexibility High Uptime & Low Latency Comprehensive SDKs and APIs Dedicated Integration Support
Use Cases	Telecom Network Maintenance Corporate Communication Systems Government & Healthcare Messaging Customer Support

In brief, Apphitect is the best choice for industries where control, scalability, and security are the top priorities. They have set a new benchmark in mobile app development, with a team of 200+ people, that redefine the end-user experience.

 

4. Deepgram: Powerful Speech Recognition Platform

Deepgram, a powerful voice AI platform that has an option for flexible deployment with enterprise-level security. Its models include speech-to-text (STT) , text-to-speech (TTS), and spoken language understanding. 

 

What are the key features of Deepgram?	Streaming Audio Pre‑recorded Audio Custom Vocabulary Speaker Diarization Self‑Hosted Deployment
Use Cases	Contact Centers Medical Transcription Conversational AI Speech Analytics Media Transcription

 

In summary, if you need an AI voice agent which can be of comprehensive, scalable, and secure with real-time transcription, audio intelligence, and handle high-throughput applications, then Deepgram is suggested. 

 

5. Vapi AI: Best Voice AI Agents for Developers

Vapi AI, an advanced voice agent, stands out with its fast performance; it has sub-500ms latency and 99.9% uptime. It’s backed by a forward-deployed team, built-in AI guardrails, and has full compliance with SOC2, HIPAA, and PCI standards.

 

What are the key features of Vapi AI?	Multilingual Automated testing Tool calling API-native Bring your own models A/B experiments
Use Cases	Tech Startups E-commerce Platforms Customer Support Services

In short, Vapi Ai is best fit for developers looking to integrate voice AI into their apps. Offers developer-friendly tools, APIs, and SDKs, making it apt for customer support, sales, and booking appointments. 

 

6. Retell AI: Production-ready AI Voice Agents

Retell AI is a fully compliant platform designed to make AI voice deployment easy. With scalability and multilingual support. 

It has 99.99% uptime and only 500ms latency, ensuring that your agents are always production-ready. You can expect to achieve 4x operational efficiency and 50% incoming calls automation.  

 

What are all the key features of Retell AI?	Call Transfer Native Integration Knowledge Base Navigate IVR Branded Call ID Seamlessly send 100s of calls Verified Phone Numbers Post Call Analysis
Use Cases	Healthcare Finance Services Insurance Home Services Logistics Retail & Consumer Travel & Hospitality Debt Collection

 

To be precise, industries that rely solely on phone-based interactions can consider Retell AI. It excels in real-time, regulated phone conversations & is praised for its ease of use, affordability, and integration capabilities. 

 

7. Cognigy: Conversational AI That Speaks Your Business

Cognigy, a conversational AI-powered customer service agent that delivers personalized and empathetic voice interactions that feel like humans. It delivers 99% routing accuracy with 70% reduced AHT (average handling time). 

What are the key features of Cognigy?	Rich Voice-Specific Logic (Dial‑Logic & ASR/Barge-In) Comprehensive API + CLI Tooling Security & Compliance Seamless Telephony & Contact Center Integration Outbound Calling & Call Management Multichannel Orchestration with Voice Focus
Use Cases	Airlines Automotive Finance & Banking Healthcare Insurance Retail & E-commerce business Telecommunications Utilities

 

In a nutshell, Cognigy AI is the preferred for businesses looking to implement robust and enterprise-grade AI voice agents in contact centers for handling tasks such as customer support and sales automation.

 

8. Lindy AI: #1 AI Sales Assistant 

Lindy AI, a truly no-code voice automation agent, supports backend automation and scalable, concurrent calling. With enterprise-grade security and flexible AI model support, Lindy adapts to your unique needs. 

 

What are the key features of Lindy AI?	Inbound & Outbound Call Handling Post-Call Automation Multi-Agent Collaboration Knowledge Base Integration & Retrieval Extensive Third‑Party Integrations Security & Compliance High-Limit Knowledge & Workflow Scaling Concurrency & Real-Time Monitoring Model-Agnostic LLM Support Voice Content & Summary Automation
Use Cases	Healthcare B2B Saas Property Management Finance

In a nutshell, if your team wants automation in repetitive tasks through voice interactions with no code, then go for Lindy AI. In simple words, Lindy is like your AI teammate that you can count to handle tasks across your all tech stack.

 

9. Voiceflow: Best Collaborative AI Agent

Voiceflow is the best choice for teams that need full control over their voice experience, while offering unified visual and code-based design. 

Its LLM-agnostic and enterprise-ready features make it highly flexible, while cross-channel deployment make sure your voice agents work seamlessly across all platforms. 

What are the key features of Voiceflow?	Dialog Manager API Knowledge Base Management Analytics & Transcripts API CLI & API‑Based Runtime Server Custom Function & API Steps Prototyping & Testing Versioning, Collaboration & Component Management Multi‑LLM & Bring‑Your‑Own‑Model Support Security & Governance Voice Channel Integration with Telephony Partners
Use Cases	Automate customer support Build an in-app copilot Contact center automation

To sum up, Voiceflow's AI Voice Agent is good choice for businesses & developers who need to integrate voice-based conversational AI in their apps and workflows. It’s a low-code platform for designing, prototyping & deploying voice assistants. 

 

10. Bland AI: Ultra-Realistic AI Phone Agent

Bland AI, a go-to choice for businesses looking for a human-like voice quality AI agent, backed by an end-to-end infrastructure. If you prefer a code-first approach, then it is a great choice as you can build complex and integrated voice workflows. 

What are all the key features of Bland AI?	Self-hosted data SOC2 Type II & GDPR compliant Robust Guardrails Regular Unit Tests Fully HIPAA compliant Regular penetration tests
Use Cases	Customer Support Sales Automation Healthcare Call Center Automation Data Collection Fraud Detection Customer Onboarding Financial Intake Logistics ID Verification

 

In a nutshell, Bland AI's voice agents are well-suited for development-heavy enterprises with specific compliance needs and the budget to maintain a custom voice stack. 

 

How To Choose The Right AI Voice Agent For Your Business?

As we have now reviewed the 10 best AI voice agents, it’s clear that each one of them has its own uniqueness, whether it’s natural conversation or enterprise-grade security. But choosing the right one among them can feel overwhelming, right?

You have to understand that the ideal solution lies in your specific business needs, setup, and scalability goals. In this last section, we will look into the 6 key factors you must consider when picking the right voice agent API or voice agent SDK for your use case, shall we? 

1. Do the providers give full source code access?

Most SaaS-based solutions provide API/SDK access without source code visibility. Providers like MirrorFly give full source code, so that you can customize the voice agent’s UI, integrations, and behaviour to fit your business workflow.

Here, high control, long-term flexibility, or strict data governance is achieved.

2. On-premise Hosting Supported?

Look if the providers support on-premise deployment for data-sensitive industries. Because it gives maximum control, security, and compliance, which is critical where customer data is highly confidential or legally protected.

3. What about the Scalability and Performance?

The platform should handle your expected call volume and user growth without performance drop. Consider the speed and responsiveness of the API in the case of real-time applications. 

4. Is it a White-label Solution?

This allows you to fully rebrand the voice agent under your company’s name. So, you can use your brand logo, icons, and themes on your app. Not all providers support this.

5. What Features and Functionality does it contain?

Compare features like natural language understanding, high-quality audio conferencing, barge-in support, multi-language voice, CRM integration, analytics, and memory retention.

6. What is the Pricing Model?

Pricing differs for all. Some providers charge per minute, others by the number of monthly interactions. Also, make sure that you evaluate free tiers, enterprise packages, and if the provider supports pay-as-you-go or flat monthly rates. 

Before you invest in a voice agent AI that grows with you, consider all the above key factors. Now it’s your time to evaluate, integrate, and launch your AI voice agent.

If you’d like to know more, contact our sales team.