Alternatives to PolyAI

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

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

Deploy low-latency conversational AI voice agents across 90+ languages in minutes.

Enterprise voice AI agents with in-house telephony, contracts starting at $30,000 a year

AI voice and chat support agents that chase resolution rate, escalation rate, or CSAT instead of just answering calls.

Inworld AI delivers realtime text-to-speech and speech-to-speech inference for consumer voice agents, with TTS-2 Flash hitting 50ms to

Slang AI is a voice AI phone host for restaurants that answers calls 24/7, books reservations and routes VIPs to staff.

Open-source, self-hostable voice AI platform for building speech-to-speech agents with your own model keys.

Beckon by Stellar is an AI voice assistant that cold-calls every career-school inquiry within 60 seconds and books the appointment.

Inworld delivers realtime text-to-speech, speech-to-text, and open-model inference on one API for consumer voice apps.

SkipCalls is a 24/7 AI receptionist that answers your existing business line, books jobs, and texts you every call summary.

AgentZee is a no-code WhatsApp sales platform with AI chatbots, outbound voice calling, and broadcast campaigns from ₹1,000/month.

NextPhone is an AI receptionist that answers business calls in two rings, qualifies the caller, and books the appointment into your

ElevenLabs AI voice generator turns text into speech in 90+ languages, with cloning, dubbing, music and voice agents.

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

EliseAI runs agentic AI for property management and healthcare — answering prospects, residents, and patients across SMS, email, chat, and

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

Voctiv runs AI call and message handlers that qualify leads, block spam, and book appointments 24/7.

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

AI-native CRM built for debt settlement teams, with six named AI workers automating intake, servicing, and negotiation.

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

Real-time text-to-speech and streaming speech-to-text models plus Managed Agents for production voice agents.

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.

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

Smallest.ai is a developer-first voice AI platform for realtime TTS, STT, speech-to-speech and telephony agents on one API bill.

MIT-licensed Python framework for building real-time voice agents you host yourself, with phone-call support via the Vocode API.

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

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

AI phone answering built only for home services — books jobs, texts follow-ups, and syncs dispatch, not just takes messages.