The AI receptionist market has matured quickly. In 2022, your options were basic IVR systems or expensive human answering services. In 2025, you can deploy a voice AI that handles inbound calls, books appointments, and updates your CRM — for a fraction of the cost of a human hire.
But not all AI receptionists are equal. Here is a practical comparison of the six options most businesses are evaluating, with honest notes on where each one falls short.
1. Smith.ai — Best for businesses that want human backup
Smith.ai uses a hybrid model: AI handles the first layer of calls, with human agents stepping in for complex situations. Pricing starts at around $285/month for 30 calls. The human backup is the key differentiator — it handles the edge cases that pure AI misses. The downside is cost: at scale, Smith.ai is significantly more expensive than a fully automated system, because you are paying for human time.
2. VAPI — Best for developers building custom voice agents
VAPI is the leading voice AI infrastructure platform. It handles the telephony, STT, LLM, and TTS layers and lets you build custom call flows on top. Pricing runs at approximately $0.05–$0.12 per minute depending on your model selection. It is not a plug-and-play product — you need a developer or agency to configure it correctly. The upside is complete customisation: you can build exactly the intake flow you need, with exactly the integrations you require.
3. Retell AI — Best for multi-step conversations with memory
Retell AI competes directly with VAPI and adds stronger support for complex, multi-turn conversations — agents that remember context within a call and handle branching dialogue more naturally. Pricing is similarly per-minute. Like VAPI, you need technical setup or an agency partner to get full value from the platform.
4. Bland AI — Best for high-volume outbound calling
Bland AI is optimised for outbound calling at scale — appointment reminders, lead follow-up, payment collection. Its inbound capabilities are solid but its real strength is concurrent outbound campaigns. If you need to call 500 patients for appointment reminders in a morning, Bland handles this well. Pricing is competitive at around $0.09/minute.
5. Ruby Receptionists — Best for law firms and professional services that want human handling
Ruby uses human receptionists with AI-assisted scripting. It is popular in legal and professional services where the human touch matters. Pricing starts at $235/month for 50 minutes of receptionist time — expensive per minute, but the quality of the call handling is high. It is the right choice if your calls are too complex or sensitive for fully automated AI.
6. Custom AI receptionist (agency-built) — Best for businesses with specific integration needs
If you need a voice agent that integrates with your specific EHR, practice management software, or CRM — and handles your exact intake workflow — none of the off-the-shelf tools will get you there without significant workarounds. A custom build on VAPI or Retell, with direct API integration to your systems, is the right approach. Build cost runs $10,000–$30,000; running cost $200–$600/month. The ROI is typically positive within 6–9 months against a human receptionist hire.
How to choose
If you have under 100 calls per month and simple call handling needs, start with Smith.ai or Ruby. If you need full customisation and system integration, you need a developer or agency building on VAPI or Retell. If you need HIPAA compliance, you need a custom build — off-the-shelf tools generally cannot provide the BAA and infrastructure configuration that compliant healthcare deployments require.