AI tools for voice agents & ai receptionists

Website voice assistant that can answer visitors and act on navigation, forms, and booking workflows.

Best for: Visitor voice conversations and Page navigation

Build AI phone agents with all-in per-minute pricing, conversational pathways, automations and compliance options.

Best for: Bland AI suits teams that want AI agents to handle phone calls such as support, outreach and scheduling, and that prefer a single per-minute rate.

Cartesia provides text-to-speech, speech-to-text and managed voice-agent services.

Best for: Speech APIs and low-latency voice prototypes

Deepgram supplies speech-to-text, text-to-speech and voice-agent APIs.

Best for: Speech recognition APIs and voice infrastructure

Open-source toolkit for building and self-hosting voice AI agents with Rust services and ESP32-based hardware.

Best for: Builders experimenting with a self-hosted voice AI device

Voice-AI evaluation tools for test suites, audio analysis, and diagnosing failures in conversational voice systems.

Best for: Hume AI's current focus is evaluation infrastructure for voice systems.

AI teammate for connected company tasks, including research, email, meetings, CRM updates, and computer-based work.

Best for: Connected app tasks and Research

Voice AI platform for voiceovers, text-to-speech APIs, and conversational agents for business workflows.

Best for: Business voiceovers and separately priced speech or agent services

Retell AI offers voice agents, call transcripts, analytics and API integration.

Best for: Voice support agents with call analysis

Build customer-service AI agents across messaging and voice, with business actions and conversation insights.

Best for: Sierra suits businesses designing a customer-facing agent with clear operating guidance and access to approved actions.

Enterprise AI voice platform for phone agents covering support, reception and booking, with telephony, CRM and compliance options.

Best for: Synthflow suits larger organizations that want managed AI voice agents for customer service, receptionist and booking work.

Vapi provides a developer platform for voice agents with model, speech and telephony connections.

Best for: Developer voice agents and call workflows