Alternatives to Helios

Presto Voice is drive-thru voice AI that answers the speaker post, takes the order, and upsells every car.

RapidSOS connects devices, vehicles and buildings to 911 dispatch with AI-assisted emergency intelligence before the call ends.

Retell AI builds, tests, and deploys AI phone agents on a pay-as-you-go voice AI platform from $0.07/min.

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

Deepgram delivers speech-to-text, text-to-speech and voice agent APIs priced per minute from one vendor.

Visual platform for building, testing, deploying, and monitoring chat and voice agents across web, app, SMS, and telephony.

Polimorphic is AI voice, chat, and permit workflow software built only for government resident services.

Kea is voice AI phone ordering for restaurants — answers unlimited concurrent calls, takes modifiers, and sends tickets to your POS and

Showdigs is AI leasing automation software that answers every prospect call and text, then books the tour.

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

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

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

Tavus builds real-time video AI agents — called PALs — that see, hear, remember you, and hold a face-to-face conversation.

Speech-to-text and voice agent APIs: transcribe, understand, and ship voice AI on one API key.

Agentic banking AI for banks and credit unions — voice, digital, and employee agents on one governed knowledge layer

Cresta runs AI agents, real-time agent assist, and conversation intelligence on one platform for enterprise contact centers.

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

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

Enterprise AI concierge platform for customer support agents that work across chat, voice, and email.

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

Banking AI platform for community banks and credit unions — automate inquiries, calls, outreach and branch workflows on Priceless Pricing.

Arini is a 24/7 AI receptionist built for dental practices that answers calls, books appointments, and re-engages patients.

D-ID generates lip-synced AI avatar videos and deploys real-time conversational visual agents in 120+ languages.

Conduit AI runs AI chat and voice agents for hotel and short-term rental guest messaging, portals, and back-office operations.

KrispCall is a cloud phone system with a Power Dialer, AI Copilot call summaries, and business SMS in one dashboard.

Safety-first voice AI agents for non-diagnostic patient conversations in healthcare.

Insurance-native AI agents that resolve calls, emails, SMS, and digital FNOL end-to-end inside your core systems.

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.

Field service management for home service trades, with an AI CSR that answers calls and books jobs around the clock, from $59/mo billed annually.