How many Voice AI Agents tools are listed?

11 total. 11 have a free option and 0 are open source.

What's a typical price for Voice AI Agents tools?

Paid tiers average around $78/month across 5 tools with published pricing. Several tools only list contact-sales pricing and aren't counted here.

Voice AI & Phone Agents

All 11 Voice AI Agents tools on AgentsIndex. Filter, sort, and compare.

11 listed11 freeavg $78/month

Reviewed by Mathijs Bronsdijk · Updated Apr 18, 2026

The Voice AI Agents catalog on AgentsIndex lists 11 tools built for this job. Most are built for supports, marketers, small teams. 11 have a free option. It's a maturing category with 11 tracked tools.

KrispCall

AI cloud phone system with global numbers, shared inboxes, and CRM integrations

Voice AI Agents

KrispCall is an AI cloud phone system with virtual numbers in 100+ countries, shared calls/SMS inboxes, IVR, recording, and CRM integrations.

Hume AI

Emotion-aware voice AI that listens to tone, not just words

Voice AI Agents

Hume AI is a voice AI platform that detects emotion in speech and responds with expressive, context-aware voice agents.

CallHippo

Cloud phone system for global sales and remote teams

Voice AI Agents

CallHippo is a cloud phone system for SMBs, sales, and remote teams needing global numbers without hardware or long telecom rollouts.

Aircall

Cloud phone, SMS, and WhatsApp for modern customer-facing teams

Voice AI Agents

Aircall is a cloud-based communications platform for calls, SMS, WhatsApp, and team collaboration.

Voiceflow

Build chat and voice AI agents without code using Voiceflow

No-Code/Low-Code BuildersVoice AI Agents

Voiceflow is a no-code platform for building AI agents with drag-and-drop tools, multi-LLM support, and omnichannel deployment for chat and voice.

Play AI

Play AI: voice agent platform with real-time TTS and voice cloning

Voice AI Agents

Play AI lets developers build conversational voice agents with sub-100ms latency, voice cloning, and a full API. Free tier available.

PolyAI

Enterprise voice AI agents that handle inbound customer calls at scale

Voice AI Agents

PolyAI builds lifelike voice AI agents for enterprise contact centers, automating inbound calls across healthcare, banking, hospitality, and more.

Synthflow

AI voice agents for automated phone calls, built without code

No-Code/Low-Code BuildersVoice AI Agents

Synthflow is an AI voice agent platform for automating inbound and outbound phone calls. No-code builder, CRM integrations, and 100+ concurrent calls supported.

Bland AI

Self-hosted AI phone agents that sound and respond like humans.

Voice AI Agents

Bland AI lets you build and deploy AI voice agents for inbound and outbound calls—with low latency, full data control, and no third-party dependencies.