voice API platform - AI tools

Deepgram provides APIs for speech-to-text, text-to-speech, and speech-to-speech voice agents, enabling developers to build voice AI products and features.

• Usage Based

Veritone Voice offers lifelike AI voice solutions for creating content on demand. Reach new audiences in localized languages with branded, custom, or stock voices, achieving unmatched speed and scale.

• Contact for Pricing

Open Voice OS is an open-source voice AI platform that enables developers to create custom voice-controlled interfaces with NLP capabilities, focusing on privacy, security, and multi-platform compatibility.

• Free

Voxist provides AI-powered visual voicemail, transcribing messages to text and enabling personalized greetings. It also offers Voice AI APIs for advanced voice data analysis.

• Contact for Pricing

Fonoster is an open-source platform enabling businesses to build and deploy voice and messaging applications as an alternative to Twilio.

• Freemium

AgentVoice is an AI-powered platform providing voice agents to automate inbound and outbound calls for tasks like lead qualification, appointment booking, and customer support. It offers seamless integration and customizable workflows via a no-code interface.

• Paid
• From 20$

Vapi provides a configurable API platform for developers to build and deploy voice AI agents for inbound and outbound call handling, scaling phone operations efficiently.

• Contact for Pricing

Cloudonix equips businesses and developers to create smart, flexible voice communications with built-in AI features, no-code tools, and seamless SIP integration. Ideal for call routing, IVR, in-app calling, and scalable voice experiences across platforms.

• Freemium
• From 49$

Open Voice OS is an open-source voice AI platform that enables developers to create custom voice-controlled interfaces with privacy-focused features, NLP capabilities, and a customizable UI. It supports multiple platforms and devices, making it ideal for DIY smart speaker projects.

• Free

Play.ai is a platform that offers voice-based interaction with AI agents, allowing users to engage in conversations and potentially clone voices.

• Freemium

Voice Vector offers advanced AI-powered voice solutions including voice cloning, text-to-speech, and speech-to-text services with flexible pay-as-you-go pricing and subscription options.

• Usage Based
• From 22$

Rime offers groundbreaking foundational models for text-to-speech (TTS) with an emphasis on customizability, reliability, low latency, and unmatched realism.

• Freemium
• From 5$