Top Vapi Alternatives

ThinnestAI

Programmable voice AI infrastructure for building multilingual phone agents with custom LLM, STT, TTS, telephony, and workflow integrations.

Amazon Alexa

The Amazon Alexa app controls smart devices, manages tasks, streams music, and provides information, enhancing home automation through voice commands and personalized experiences.

VoiceGPT

VoiceGPT is a multilingual voice assistant app that provides quick and detailed responses to user queries through simple voice interactions.

Sesame

Sesame is an AI platform that offers a voice assistant and conversational models, enabling businesses to automate customer interactions through natural language processing.

KrosAI

KrosAI provides phone infrastructure to run AI voice agents over local numbers and languages, handling number provisioning, call routing, billing, and call visibility for phone-based workflows.

Retell AI

Retell AI is a platform for creating and managing LLM-based voice agents for businesses, enabling task automation and customer interactions through a no-code interface.

Synthflow AI

Synthflow AI allows users to create customized AI voice assistants without coding, enhancing customer interactions and streamlining business operations.

豆包

豆包 (Doubao) is an AI chat assistant for conversation, learning, and creative tasks, offering voice interaction and customizable AI personas.

Pranthora

No-code modular voice AI platform to build and deploy voice automation. Design workflows, manage conversations, choose models, and connect external systems for real-time agent access.

Dograh

Open-source voice agent platform for building and running inbound/outbound AI calling workflows with self-hosting and custom model/provider support.

Vonage

The Vonage app is a communication platform for businesses that facilitates voice, video, and text communications, with features for collaboration and customer service automation.

Voximplant

Voximplant is a platform that enables developers to integrate real-time voice, video, and messaging features into applications without requiring backend infrastructure.

Eclatira

Eclatira helps developers build and deploy AI agents for voice, video, chat, and screen sharing, with connections to APIs, MCPs, and over 3,000 apps.

AI Assistant

AI Assistant enhances productivity by managing and creating digital content, providing personalized insights, and performing various tasks across platforms.

Microsoft Azure

Microsoft Azure is a cloud platform by Microsoft for building, testing, and managing applications and services in a global network of data centers.

Vercel

Vercel is a cloud platform that enables developers to build, scale, and deploy web applications efficiently with tools and features for security and performance monitoring.

Whatstool Business

Whatstool Business is a WhatsApp solution for businesses, offering API, chatbots, CRM, automation, and analytics to enhance customer management and communication.

Azure DevOps

Azure DevOps is a cloud platform that supports software development by providing tools for planning, coding, testing, and deploying applications effectively.

Layla AI

Layla AI is a travel app that simplifies travel planning and booking using AI, social content, and partnerships with major travel services.

Bolna

Bolna is an open-source framework for building, deploying, and managing real-time multilingual LLM-based voice agents with text-to-speech and telephony/business integrations.

VoicyClaw

VoicyClaw is a voice interface for OpenClaw that lets users talk to an AI agent by microphone and hear spoken responses in real time.

Vogent

Vogent is a platform for building, testing, and deploying customizable AI voice agents, enabling seamless integration of various AI models and voice interactions.

Twilio

Twilio is a cloud communications platform that enables voice, messaging, and video integration into applications, offering scalable APIs for customizable solutions.

QuickBlox

QuickBlox provides APIs and SDKs for developers to integrate chat, voice, and video communication features into applications across multiple platforms.

Cloudonix

Cloudonix offers APIs, SIP trunking, no-code tools and SDKs to build and run voice, IVR, messaging and in‑app calling with cloud-based control and analytics.

Millis AI

Millis AI is a platform for developers to create low-latency voice agents, enhancing customer interactions through advanced speech and language processing.

Voicebun

Voicebun is a no-code platform for creating AI voice agents that automate calls, support, and scheduling across various industries.

Replit

Replit is a cloud-based IDE that allows users to write code, collaborate, and deploy applications in various programming languages through a web browser.

Vozy

Vozy is an AI voice platform that enables companies to automate customer interactions through voice assistants and conversational AI, enhancing customer experiences and reducing costs.

Agora

Agora is a platform that enables developers to integrate real-time voice, video, and chat functionalities into applications for enhanced user interaction.