Developer platform for building ultra-low-latency voice AI agents that make and take phone calls, billed per minute.
What it does
Millis AI is a platform for creating LLM-based voice agents with roughly 600ms latency. Non-technical and developer users can build agents from prompts or code, connect phone numbers for inbound and outbound calls in 100+ countries, and wire agents to CRMs, calendars, and SaaS tools through webhooks. It works with major LLM, TTS, and STT providers.
Core features
Sub-second (~600ms) conversational latency
No-code and low-code agent builder
Inbound/outbound phone calls in 100+ countries
Webhook integrations to CRMs and SaaS
Choice of LLM, TTS, and STT providers
SDKs for web, mobile, and desktop deployment
Best for
→Automating 24/7 customer support calls
→Qualifying and following up on sales leads
→Running surveys and feedback collection
→Building AI virtual receptionists
Pricing
Platform base charge
$0.02/min
Speech-to-text
$0.0043/min