Vapi vs Synthflow vs Bland: The Ultimate AI Voice Caller Battle

Introduction

In recent months, AI voice calling technology has been gaining tremendous traction, making it possible to create realistic-sounding voice agents capable of fully automating inbound and outbound calls. Choosing the right platform tailored to your specific use case and business needs is crucial. In this article, we'll compare the leading AI voice calling platforms currently available—Vapi, Synthflow, and Bland AI.

Evaluation Criteria

The following criteria will guide our evaluation of the voice AI systems:

Realism: How realistic do the voice agents sound?
Price: Are these platforms affordable for your business?
Speed: What is the latency of the AI agents?
Integrations and Ease of Use: How many built-in integrations do these platforms offer with tools like Zapier, Make, or GHL?
Country Support: Which countries are supported by these platforms?

Realism

In terms of realism, both Vapi and Synthflow integrate with 11 Labs, a leading AI voice provider. This allows users to upload a wide range of custom voices that sound remarkably realistic and can feature various accents. This is particularly beneficial when dealing with international clients, ensuring that the voice agent resonates well with them. For example, an Australian client would appreciate a voice with an Australian accent rather than a British or American one. In contrast, Bland AI also relies on 11 Labs but doesn’t grant users access to upload their custom voices. This limitation means users cannot create a voice using their unique tonal characteristics.

Pricing

Bland AI employs a flat rate of $ 0.12 per minute of call time. Meanwhile, Vapi's pricing can vary significantly due to its modular approach. Users can select from different transcription and text-to-speech options, tailoring the solution to their needs. Synthflow, on the other hand, is more expensive, charging a $ 30 monthly subscription which includes 50 minutes of call time, followed by a cost of $ 0.55 per minute for additional use. This makes Synthflow less viable for businesses at the beginning stages.

Speed

After performing personal tests on these platforms, the average response times are as follows:

Vapi: 1.57 seconds
Bland AI: 1.66 seconds
Synthflow: 2.17 seconds

Ease of Use and Integrations

Vapi excels in its simplicity, particularly when it comes to pulling back data during calls, allowing for more advanced automations. This modular configuration permits users to enhance the latency of the voice agent according to their specific needs. Both Bland and Synthflow feature native integrations with Zapier, making it easier to establish complex automations.

Country Support

Bland AI currently only caters to US clients, which can be a limitation for those operating in other regions. Conversely, both Vapi and Synthflow enjoy international support, making them accessible to a broader audience.

Conclusion

After analyzing the above criteria, it is clear that Vapi stands out as the winner of this battle. While both Vapi and Synthflow have excelled in realism, Bland AI's limitations in voice customization hinder its overall appeal.

If you're looking for a comprehensive voice solution for your business, Vapi’s versatility and feature set may be the best option.

Stay tuned for our next video, where we’ll guide you through the step-by-step process of creating basic phone callers with Vapi, which you can start selling to clients immediately!

Thank you for reading!