Alternatives to Marr Labs

Decagon builds enterprise AI concierge agents for chat, voice, and email that resolve customer support without engineering sprints.

PolyAI builds enterprise voice AI agents that resolve complex customer calls end to end in 40+ languages.

Build low-latency conversational AI voice and chat agents that deploy in minutes across 90+ languages.

One no-code platform for AI chatbot, outbound voice calling, WhatsApp broadcast, and sales analytics agents.

AI voice and chat support agents that chase a metric — resolution rate, escalation rate, or CSAT — not just answer calls.

Low-latency text-to-speech API and AI voice agents — Murf AI runs real-time phone conversations at 1 cent per minute.

ElevenLabs generates ultra-realistic AI voice, music, dubbing, and voice agents from one shared credit pool.

Synthflow AI runs enterprise voice AI agents on its own telephony network for automated phone calls at scale.

Real-time text-to-speech and streaming speech-to-text models plus a platform for shipping production voice agents.

Bland AI runs AI phone agents for regulated calls, bundling LLM, STT, TTS, and telephony into one per-minute rate from $0.14/min.

Agentic AI that answers every prospect, resident, and patient message across SMS, email, chat, and voice for housing and healthcare operators.

Vapi is an API-first platform for building voice AI agents that run real inbound and outbound phone calls at sub-500ms latency.

Inworld AI delivers realtime text-to-speech and speech-to-speech inference for voice agents at consumer scale.

Enterprise voice AI agents with in-house telephony, from $30,000 a year

Millis AI (by TMate Inc.) builds LLM voice agents you can deploy to phone numbers, web, mobile or desktop with claimed 500–600ms latency.

Open-source voice AI framework for building real-time voice agents on phone calls and the web — self-hosted.

Dograh is an open-source voice AI platform for building speech-to-speech agents you self-host with BYOK model keys.

No-code AI voice agents that run outbound and inbound phone calls, book meetings, and take call-time actions for you.

AI agents that answer patient calls, book visits, and recover no-shows across voice, SMS, email, and web.

Inworld is realtime voice AI infrastructure for developers — steerable TTS-2, speech-to-text, and a zero-markup LLM router on one API.

Notable runs healthcare AI agents that automate patient access, revenue cycle, care operations, and contact center work.

Turbo is Bland AI's per-minute voice API that bundles LLM, speech-to-text, and text-to-speech into a single rate.

Voice AI that takes restaurant phone, drive-thru, text and kiosk orders in your brand's voice.

Modular LLM agentic AI platform that automates enterprise contact centers across voice and text in Swiss-German, German, French and Italian.

Voice AI evaluation that measures 600+ dimensions of expression across 50+ languages.

Slang AI answers restaurant phone calls 24/7 — reservations, guest questions, and VIP routing handled by hospitality-specific voice AI.

Smallest.ai is a developer-first voice AI platform with TTS, STT, speech-to-speech models, telephony and hosting on one API-first bill.

Stellar's Beckon AI voice assistant calls every career-school inquiry within 60 seconds and books the appointment.

Open-source Vue 3 components for building custom ElevenLabs voice and audio agent interfaces.

Voctiv runs AI call and message handlers that answer, qualify, and book for businesses of any size.