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19 Best Millis AI alternatives (2026)

Millis AI is low-latency voice agents. Teams that switch usually cite price at production volume, compliance requirements, deeper pipeline control. The alternatives below are ranked by published head-to-head verdicts, not sponsorship.

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Outbound-heavy, enterprise-leaningBest if you need: ecommerce support and orders, healthcare compliance, outbound sales campaigns
Voice-quality leader, agents platformBest if you need: no-code agency deploys, custom pipeline control, ecommerce support and orders, healthcare compliance, smb receptionist and booking
API plus no-code, production telephony fastBest if you need: no-code agency deploys, custom pipeline control, ecommerce support and orders, healthcare compliance, outbound sales campaigns
Dev-first API platform, full pipeline controlBest if you need: no-code agency deploys, custom pipeline control, ecommerce support and orders, healthcare compliance, outbound sales campaigns
AI sales calls
See pricingTry Air AI
Dev platform, conversational AI
From $0.08/minTry Dasha
AI employees incl. phone agents
From $49.99/moTry Lindy
Realtime infra + agents (OSS + cloud)
From $0.01/minWebsite →
SMB AI receptionist
From $0.05/minTry Phonely
Voice agents + TTS heritage
Enterprise voice assistants
See pricingTry PolyAI
Contact-center AI (enterprise)
See pricingTry Regal
Ecommerce phone agents
From $0.29/minTry Ringly.io
Persona-driven voice agents
From $99/moTry Sindarin
No-code, agency white-label king
From $2,500/moTry Synthflow
No-code AI contact center
From $500/moTry Thoughtly
Realtime speech model + platform
From $0.05/minTry Ultravox
Open-source framework
See pricingWebsite →
Agent builder (chat + voice)
From $0.05/minTry Voiceflow

Where to switch, by reason

Switching because of price at production volumesee Voiceflow
Switching because of compliance requirementssee LiveKit Agents
Switching because of deeper pipeline controlsee LiveKit Agents