
Caspy
Google Assistant
Ringbot
Callio AI Phone Concierge
DoNotPay
SmartLens
Personal.ai
An AI assisstant that can talk on the phone π€

Eleven Labs
AI Phone Number by ChatOdyssey
Vapi
call4me
CallMeMCP
Deepgram
CallYourBuddy
OpenRouter for Voice

Which is more popular?
Based on our record, Google Duplex seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | ai.googleblog.com | speko.ai |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
Testing Google Duplex LIVE! π¬
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How often each product is chosen within a category, 0β100% relative to the other.


Share your experience with using Google Duplex and Speko. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Sounding like AI and being able to actually hold a conversation while in character are two different things though. Some really fancy ones are getting really close. Source: about 4 years ago
For example: https://ai.googleblog.com/2018/05/duplex-ai-system-for-natural-conversation.html. Source: over 5 years ago
I'm working on a game that has an AI narrator talking to the player. I messed around with some filters in Audacity that I don't know how to use until I realized I don't want a stereotypical computer voice, what I'm actually looking for... Source: over 5 years ago
Tracking Speko since Aug 2026.
When comparing Google Duplex and Speko, you can also consider the following products.


The most realistic and versatile AI speech software, ever. Eleven brings the most compelling, rich and lifelike voices to creators and publishers seeking the ultimate tools for storytelling.
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Get things done with Google Assistant
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Get the only AI phone number that can make and receive calls. Your AI assistant picks up 24/7, handles calls and messages while you stay private. The smart phone number that always answers.
Compare AI Phone Number by ChatOdyssey to Google Duplex or Speko:
Have a bot call someone and tell them your message!
Compare Ringbot to Google Duplex or Speko:
