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Retell AI: Create lifelike AI voice agents that can perform complex tasks and interact like humans. Below are the tools in our catalog that cover the same features, grouped by the job they replace, with pricing side by side.
Replaces Retell AI for: Advanced Voice AI · Stateful Multi-prompt Agent · Real-time Monitoring
Automate calls and chat conversations with AI voice agents using real-time speech-to-speech dialogue and natural-sounding voices across 100+ languages.
Web-based voice AI that answers calls, books appointments, updates CRM, and supports 100+ languages in real time.
Boson AI provides voice agents and audio models for business workflows, including real-time speech-to-speech and text-to-speech capabilities.
AI voice agents that handle phone calls, schedule appointments, update CRMs, send texts, and automate workflows with memory and integrations.
Replaces Retell AI for: Pre-built Templates · Stateful Multi-prompt Agent · Comprehensive Testing and Deployment
Open-source platform to visually build, deploy, and manage LLM apps, agents, and RAG pipelines with drag-and-drop workflows and APIs.
Efficiently build, deploy, and scale AI agents.
A platform to build, observe, test, and deploy multi-agent AI systems with deep observability and automated safety controls.
A no-code/low-code platform for building, testing, and deploying AI agents through visual workflows without deep programming expertise.
Replaces Retell AI for: Advanced Voice AI · Real-time Monitoring · Human-like Interaction
Cartesia delivers real-time AI voice and TTS models with low-latency streaming, voice cloning, and transcription for interactive applications.
Build and scale real-time voice and video applications with sub-100ms latency for interactive experiences.
API for real-time bidirectional voice streaming with model handoff
| Tool | Pricing | Monthly visits | Compare |
|---|---|---|---|
| Retell AI | Free Trial, from $0.01 | 809K | |
| Autocalls | Paid, from $27/m | 40K | Compare |
| Phonely | Freemium, from $0.02 | 38K | Compare |
| Boson AI | Paid, from $0.01 | 34K | Compare |
| AgentVoice | Paid, from $0.10 | 7K | Compare |
| Dify | Paid, from $59 | 964K | Compare |
| xpander.ai | Free Trial, from $100 | 14K | Compare |
| Vivgrid | Freemium, from $25 | 2.2K | Compare |
| Coze Studio | Free, from $0.07 | — | Compare |
| Cartesia | Paid, from $0.01 | 1.2M | Compare |
| LiveKit | Paid, from $0.01 | 467K | Compare |
| GPT-Live API | Freemium, from $20 | — | Compare |
