Millis AI
by Millis AI
Low-latency voice agents from $0.02 a minute
Reviewed by the the30top research team · Last reviewed 2026-10-27
Overview
Millis AI lets developers build LLM-based voice agents with latency around 600ms and connect phone numbers for inbound and outbound calling in 100+ countries. It works with OpenAI, Mistral, Llama and custom LLMs, and voice providers such as ElevenLabs, PlayHT and Cartesia. Pricing starts at $0.02 per minute on the site. The limitation is that the homepage lists no compliance certifications, no company background and no free trial.
Our verdict
An inexpensive, flexible option for builders. Treat the headline price as a floor and ask about security before handling sensitive data.
Best for
Developers who want a cheap, low-latency voice layer for outbound or inbound calling.
Avoid if
You need published compliance documents or enterprise support commitments.
Pros
- Very low headline per-minute price
- Choice of LLM and voice providers
- Global phone coverage
Cons
- No compliance certifications listed
- No free trial shown
- Company details are not published on the homepage
Key capabilities
Frequently asked questions
How much does Millis AI cost?
The homepage shows advanced voice AI starting at $0.02 per minute.
Does Millis AI support outbound calls?
Yes. You can connect phone numbers for inbound and outbound calls in 100+ countries.
Which models does it work with?
The site lists OpenAI, Mistral, Llama and custom LLMs, plus ElevenLabs, PlayHT and Cartesia voices.