Call Answering

Millis AI

Build and deploy ultra-low latency voice agents for phone calls, web, and apps in minutes.

millis.ai

Verified API available

Quick facts
What is it	Build and deploy ultra-low latency voice agents for phone calls, web, and apps in minutes.
Pricing	Paid
Free tier	No
Platform	Web Application
API	Yes
Best for	24/7 automated customer support calls, Lead qualification and sales follow-up calls
Domain registered	2024

Data updated Aug. 1, 2026

What does Millis AI do?

Millis AI is a platform for building and deploying voice agents that can handle real-time conversations over the phone, web, or mobile apps. It focuses on creating AI-powered assistants that sound natural and respond quickly, with a claimed latency of around 600 milliseconds. You can configure these agents to answer inbound calls, make outbound calls, or be embedded into websites and applications.

The platform stands out by emphasizing speed and ease of use. It connects to various large language model providers like OpenAI or open-source options, and pairs them with natural-sounding voices from services like ElevenLabs. A key feature is the ability to attach a phone number to an AI agent with a few clicks, enabling it to handle calls in over 100 countries. The system also supports webhook integrations to connect with other business tools like calendars or CRMs, making the agents more functional.

This tool is useful for businesses that want to automate phone-based tasks without a complex setup. It helps customer support teams by providing 24/7 automated answering for routine inquiries. Sales teams can use it for initial lead qualification and follow-ups. It's also suited for creating virtual receptionists or interactive voice assistants for kiosks and wearable devices. The pricing model, starting at a few cents per minute, aims to make it accessible for projects of various scales.

Call Answering Text-to-Speech Voice Assistants

Key features

What makes it stand out

Ultra-low 600ms latency for natural conversations

No-code/low-code platform for quick agent creation

Connect phone numbers for inbound/outbound calls in 100+ countries

Integrate with multiple LLM providers (OpenAI, Mistral, Llama) and voice services

Affordable pricing starting at $0.02 per minute

Who is Millis AI for?

Who benefits most from this tool

24/7 automated customer support calls

Lead qualification and sales follow-up calls

Virtual receptionist and appointment scheduling

Pricing

Millis AI Platform

Custom

$0.0043 per minute stt
$0.075 per 1K characters rime tts
$0.001 per 1K characters neets tts
No charge custom llm
$0.015 per 1K characters openai tts
$0.25 per 1K characters playht tts
$0.0392 per 1K characters cartesia tts
$0.015 per 1K characters deepgram tts
$5.00 per 1M tokens gpt 4o input
$0.02 per minute base platform
$15.00 per 1M tokens gpt 4o output
$0.10 per 1K characters eleven labs tts
$10.00 per 1M tokens gpt 4 turbo input
$30.00 per 1M tokens gpt 4 turbo output
$0.90 per 1M tokens meta llama 3 input
$0.50 per 1M tokens gpt 3 5 turbo input
$0.90 per 1M tokens meta llama 3 output
$1.50 per 1M tokens gpt 3 5 turbo output
Base platform access
Multiple LLM providers
Multiple TTS providers
STT service
Volume discounts available

Trust & presence

Domain Domain registered 2024

Gallery

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