I Tested The 10 Best Vapi AI Alternatives For 2026

Rajeshwari Published On December 19th, 2025 Share it on

Find the best Vapi AI alternatives to build your real customer support AI agent. This review is based on practical experience after testing 26+ models. Not a theory or promotion. 

Vapi AI is a voice platform that helps you build, test, and deploy phone agents applicable across customer support use cases. It offers multilingual, tool calling, bring your own model, and A/B experiment features. 

But is it still the right choice in 2026? In this article, I will honestly share what I have observed after testing each platform. I have compared the features and put together the ‘10 best Vapi AI alternatives’ in a table.

Best Vapi AI Alternatives in 2026: TL;DR

1. MirrorFly: Conversational Voice AI Solution

2. Apphitect: Secure AI Voice Agent

3. Lindy AI: Reliable Voice Agent For Teams

4. Synthflow AI: Enterprise-grade AI Voice Agent

5. Retell AI: Inbound AI Calling Agent 

6. Telnyx: Production-Grade AI Call Assistant

7. Speechly AI: Scalable AI Virtual Voice Assistant

8. Cognigy: Leading AI Phone Call Agent

9. Poly AI: Next-Gen Outbound Calling Agent

10. Bland AI: Phone Call Automation Tool

How I Tested These Vapi AI Alternatives

I didn’t switch away from Vapi.ai to other alternatives all of a sudden. I compared Vapi AI with others and found more affordable, low-latency platforms that scaled along with my business. Here are some reasons that I personally felt while using Vapi AI:

📌Higher final cost: The price was shown as $0.05 per minute at first, but had additional fees for TTS, STT and LLMs later. When I tested Vapi AI across high-minute volumes, cost went up fast, as it charged me based on my usage. 

📌Robotic voice: When I checked the platform with concurrent users, it produced less natural voice replies. The delays in conversation were obvious when interacting with the phone system.

📌Usability challenges: Vapi was a developer-focused platform. The setup was difficult to manage by my in-house teams. With its Flow studio, I was not able to control the production workflows. 

📌No unified communication: I later realized most of the voice agent platforms had options for extending into SMS or chat. But Vapi AI focuses only on voice. Phone number was restricted to US & Canada. I configured it individually for other regions. 

📌Support team responsiveness: I waited for a long time when an edge case was escalated. It could have been better if 24/7 human support had been provided. Documentation alone was not sufficient for me. 

🥇10 Best Vapi AI Alternatives in 2026 (Hands-On Review)

I ran live inbound and outbound calls for Vapi alternatives to see real performance. Here are my 10 best Vapi AI alternatives for 2026: MirrorFly, Apphitect, Lindy AI, Synthflow AI, Retell AI, Telnyx, Speechly AI, Cognigy, Poly AI and Bland AI. 

1. MirrorFly – #1 Voice AI Agent Solution Provider

Best for: Best for enterprises needing on-prem AI voice agents

I’ve used Lindy AI, Synthflow AI, Retell AI, and other providers as voice agents. However, I was not able to find a voice assistant that worked for my business’s unique needs. 

I checked MirrorFly, which was a white-label AI voice agent solution. It let my developers create intelligent audio interactions with LLM-powered conversations and intent-based responses. The solution offered 100% customization, custom security, and complete data ownership for my business.

Why I Chose MirrorFly Over Vapi:

What surprised me was, MirrorFly gave flexibility for my developers to host on my own servers or the MirrorFly Cloud. I was able to integrate SIP/VoIP and ultimately provided a human-like voice experience. It gave me the option to hire their team to build and launch my own AI agent. 

It’s conversational AI, supported multi-language and domain-specific interactions. MirrorFly’s guardrail system prevented my AI voice agent from sharing sensitive info during conversations. I would say this is one standout feature I observed with this solution. 

Pricing: 

One-time license cost for enterprise 

---

2. Apphitect – Secure AI Voice Agent 

Best for: Teams handling real-world call flows like bookings and interruptions.

Apphitect helped me create both chatbots and voicebots with natural, AI-powered interactions across web and mobile apps. The platform gave me full flexibility to shape conversations exactly the way I needed. This solution was more similar to MirrorFly.

Why I Chose Apphitect Over Vapi:

What stood out was Apphitect’s custom security control, and I got full source code access to tweak or expand features as I wished. I met internal compliance easily, as it gave me the option for on-premise and cloud hosting. 

I branded the entire solution as it supported white labelling. The conversational intelligence helped me deliver more responsive and engaging interaction for my users.

Apphitect supported multi-language conversations, sentiment analysis, and AI-driven intent recognition. So I build a dynamic user experience while retaining complete control over the data. 

Pricing:

Custom pricing based on businesses need

---

3. Lindy AI – Reliable Voice Agent For Teams

Best for: Organization that’s looking for an AI phone call agent 

I tried Lindy AI, and it helped my business automate the phone calls and sales research process. It recorded the client meetings and sent the highlights to my team on Slack. 

Why I Chose Lindy AI Over Vapi:

One thing I noted good about Lindy is, when callers interrupted, it’s AI Gaia switched context and responded fastly. The initial setup took me less hours when compared to Vapi AI. For customer support and for sales & marketing, my team relied on Lindy. 

I was able to integrate with Stripe and Intercom tools. Initially, I used its free plan to try first 40 tasks. And yes, it supported long calls too.  

Pricing: 

• Free plan with 400 credits
• Paid plans begin at $49.99/month

---

4. Synthflow AI – Enterprise-grade AI Voice Agent

Best for: Non-technical team needing a natural voice AI platform

I started using Synthflow free plan. It had prebuilt templates, sentiment analysis features, and supported CRM, ERP integration in free plan itself.

Why I Chose Synthflow AI Over Vapi:

Synthflow helped me build an inbound support agent. It was a no-code builder platform. The provider had their own telephony and let me tailor the call flows. The Speech-to-Text capability was very accurate. With noisy backgrounds, the assistant still handled smoothly. 

I selected call type based on industry and monitored how the AI agent handled real-time interactions. Also, while enquiring the price, they were transparent. 

Pricing: 

• Free plan with limits
• Enterprise plan $30k/year

---

5. Retell AI – Inbound AI Calling Agent 

Best for: Enterprises looking to scale up with phone-based communication

Similar to how Synthflow AI delivered a 500ms response time in latency, Retell AI also performed. When I compared Vapi vs Retell AI, the latter was easy for me to deploy.

Why I Chose Retell AI Over Vapi:

Retell was a true full-stack solution. It gave me a conversation builder, a sandbox for testing, and a dashboard for monitoring, all in one place. Even with a high concurrent call, it ensured performance consistency and integrated seamlessly through webhooks and APIs.

I observed that after 3 months, it helped me achieve 4x operational efficiency and automated 50% of the incoming calls. To be precise, this platform simplified creating and deploying the voice agent. 

Pricing: 

• Standard plan at $0.07 to $0.31/min
• Enterprise plan at $0.05/min

---

6. Telnyx – Production-Grade AI Call Assistant

Best for: AI agent that integrates telephony in conversation

Telnyx helped me build, deploy, and manage a high-quality AI voice agent for my customer service and sales team. I didn’t face any call drops or audio issues at any time. 

Why I Chose Telnyx Over Vapi:

Telnyx operated its own global telecom network, which was an added advantage. I noticed the real-time voice performance was fast. Call events happened instantly and the assistant fetched orders and CRM info in real time. It kept user data stored within specific geographic regions. 

If you need a reliable and unified solution to handle telephony, AI voice agent and orchestration together with predictable latency, go for Telnyx.

Pricing:

• $0.08 per minute for voice AI
• Starts at $0.002 per minute for voice API

---

7. Speechly AI – Scalable AI Virtual Voice Assistant

Best for: Developers seeking real-time STT and NLU via API

With Speechly, the system was able to go beyond just basic commands to understand user intent and handle corrections seamlessly. Especially, it helped me in a customer support use case. 

Why I Chose Speechly Over Vapi:

Speechly voice platform helped me create intuitive voice user interface. It transcribed both live and pre-recorded audio. When combined with the Mac Co-Pilot, it offered me smart control option to create custom commands based on my workflow.

What stood out to me was the real-time streaming. It gave me instant visual feedback. This made easy for me to correct errors quickly, in context of multi-modal interfaces.

Pricing:

• Basic plan at $4.95/mon
• Premium plan at $19.95/mon
• Ultimate plan at $49.95/mon

---

8. Cognigy – Leading AI Phone Call Agent

Best for: Contact centers to automate voice & text interaction

After using Cognigy voice platform for my enterprise, I found it suited well for delivering 24/7 customer service and automating refund and booking tasks. 

Why I Choose Cognigy Over Vapi:

Cognigy handled high call volumes. I used its advanced NLU capability to deliver personalized experiences for my customers. Cognigy provided me flexibility with on-premise and private cloud deployment. I tested the platform using the basic package. 

What impressed me most was, the built-in short and long term memory, made my customer interaction feels highly personalized.

Pricing:

• Basic plan with 1 to 50 inputs for 24 hrs 
• Above 50 inputs additional charge apply

---

9. Poly AI – Next-Gen Outbound Calling Agent

Best for: Businesses needing omnichannel conversational AI

Poly AI voice platform focused on empathy and brand consistency. It helped me reduce support costs while improving customer satisfaction. 

Why I Chose Poly AI Over Vapi:

Its conversational voice AI agent delivered a natural, human-like customer service. It handled complex queries, supported multiple languages, and integrated well with my existing systems. The platform’s Agent Studio enabled more natural understanding and accurate resolution.

Poly AI automated high volumes customer support calls, especially in healthcare and finance scenarios. It maintained my brand tone across every interaction.

Pricing: 

Usage-based billing

---

10. Bland AI – Phone Call Automation Tool

Best for: Developers looking for code-first voice AI platform

Bland AI platform automated phone calls with hyper-realistic and human-sounding agents. It offered a self-hosted infrastructure for security and scalability purpose. 

Why I Chose Bland AI Over Vapi:

With Bland AI, I operated across voice, SMS, and chat, delivering a connected customer experience. This also helped me to avoid data silos. But with Vapi, I was able to handle only phone calls. It also provided a more straightforward pricing.

It included features such as customizable voice cloning, visual path for call flows, real-time human handoff, CRM integration and guardrails to control its behavior

Pricing: 

Minimum outbound call at $0.015/call

---

Vapi AI Alternatives: Feature Comparison (2026)

Feature	MirrorFly	Apphitect	Lindy AI	Synthflow AI	Retell AI	Telnyx	Speechly AI	Cognigy	Poly AI	Bland AI
Self-hosting	✅	✅	❌	❌	❌	❌	❌	✅	❌	✅
Developer dependent	✅	✅	❌	❌	❌	✅	✅	✅	❌	✅
Latency < 500 ms	✅	✅	❌	✅	✅	✅	✅	❌	❌	❌
NLP Capability	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
Custom Security	✅	✅	❌	❌	❌	✅	❌	✅	❌	✅
White Labelling	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌
Multi Tenant Infra	✅	✅	❌	✅	✅	✅	✅	✅	✅	✅
Multi-language support	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
Telephony-Ready	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
Quick support team response	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅

Recommended Read: Top 10 Custom AI Voice Agent Development Companies

Why MirrorFly Tops for Enterprise Control

After I tested some of the most talked-about Vapi alternatives, I saw how they perform in real business scenarios. I didn’t just conclude through demos. Personally, here’s what I would recommend for enterprises:

• MirrorFly and Apphitect gave full control over data with self-hosting, 500+ custom AI agent features, and complete source code access. With these solutions, I was able to build voice AI agents exactly how I wanted to. 

• Platform such as Synthflow AI impressed me with low latency and fast deployment, while Telnyx delivered the most reliable telecom-grade performance for production workloads.

Overall, if I had to pick one, MirrorFly stands out as my top Vapi alternative. The level of customization, hosting flexibility, and freedom to build AI voice agents without limitations made it the most reliable one.
I found the MirrorFly voice AI agent here and if you are willing to contact them, use the form to give your details. Their experts will reach out to you in 24 hours.

Frequently Asked Question

---