Alternatives to NeverClosed.AI

Inworld AI delivers realtime text-to-speech and speech-to-speech voice agents with TTS-2 Flash at 50ms to first audio.

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

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

ElevenLabs does text to speech in 90+ languages, plus voice agents, dubbing, music and Scribe transcription on one shared credit pool.

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

Smallest.ai runs realtime TTS, STT, speech-to-speech and telephony voice agents on a single developer API.

Callab AI deploys AI voice agents for enterprise contact centers on your existing PBX, SBC and telephony.

Insurance-native AI agents that resolve FNOL, claims, and service calls inside Guidewire, Duck Creek, Applied, and Vertafore.

Bland AI runs enterprise voice AI phone agents on its own LLM, speech-to-text, and text-to-speech stack from $0.14/min.

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

RapidSOS pushes device, vehicle and sensor data into 911 dispatch so call-takers see the emergency before the caller speaks.

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

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

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

Speech-to-text API for accented, multilingual audio — real-time streaming at 350ms or batch transcription, on-device, on-prem or in the

Gladia is a real-time and async speech-to-text API with speaker diarization, sentiment, and 100+ language audio intelligence built in.

Open-source Python framework for building real-time voice agents you self-host, with an enterprise API for phone calls.

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

No-code AI voice agents for French healthcare and SMB phone lines, handling inbound and outbound calls in 30+ languages.

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

Deepgram sells speech-to-text, text-to-speech and a one-call Voice Agent API, with Flux STT doing turn detection and interruption handling for live agents.

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

Turbo voice API: one per-minute rate covering LLM, STT, and TTS for production AI phone calls.

EliseAI: agentic AI for property management and healthcare that answers every call, text, and chat.

Build, test, and scale real-time voice, video, and physical AI agents on LiveKit's open-source framework and cloud.

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

Giga builds AI voice and chat support agents that optimize your resolution rate, escalation rate or CSAT instead of just answering calls.

Inworld delivers realtime TTS, streaming STT, and speech-to-speech voice AI on one API for consumer apps.

Murf AI is a real-time text-to-speech API and voice-agent platform — Falcon 2 runs at 1 cent per minute, plus a studio and dubbing suite for creators.

AssemblyAI sells speech-to-text, speech understanding, and voice agent APIs, so you build voice features without running the model stack.