Retell AI
Customer Support AgentsBuild and deploy production-ready voice AI agents with real-time interruption handling and CRM integrations.
Run an HVAC, plumbing or other home-services company?
We'll set up Retell AI, or the right alternative, to answer your calls and book jobs. Start with a free audit.
👍 Pros
- ✓Production-grade reliability
- ✓Excellent CRM integrations
- ✓Bring-your-own LLM support
- ✓Strong interruption handling
- ✓Usage-based pricing scales well
👎 Cons
- ✗Higher cost per minute than some competitors
- ✗Enterprise features require higher tier
- ✗Voice cloning limited on entry plan
Features
- ✓ Real-time interruption handling
- ✓ CRM integrations
- ✓ Multi-language support
- ✓ SIP trunking
- ✓ Custom LLM support
- ✓ Post-call analytics
- ✓ Call transfer & escalation
- ✓ Ambient noise cancellation
Pricing
Performance snapshot
From the blog
View all →15 May 2026 · 19 reads
ElevenLabs, OpenAI TTS, and Azure: Which Voice Is Right for Your Agent?
The TTS provider you choose shapes how users perceive your voice agent. Here's a practical comparison of the three leading options for production deployments.
Read more →12 May 2026 · 11 reads
How to Evaluate a Voice AI Agent: 5 Metrics That Actually Matter
Not all voice agents are created equal. These five metrics will tell you whether an agent is ready for production — or still needs work.
Read more →9 May 2026 · 6 reads
The Voice Stack Explained: STT, LLM, and TTS
Every voice AI agent is built on a three-layer stack. Understanding each layer — and the tradeoffs between providers — is essential for building reliable, natural-sounding agents.
Read more →