Local AI Receptionist – AI phone receptionist, fully local

What it does

An AI receptionist that answers the phone (a Twilio number) or replies in the browser, books appointments and speaks Italian (with a Milanese accent) and German. Everything runs locally on an Apple Silicon Mac with open-source models. It is a heavily rewritten fork of ai-caller-cosmio (Cosmio).

Highlights

Listening with NVIDIA Parakeet v3, voice with Qwen3-TTS (a voice cloned from a sample), both local on MLX
The “brain” is Claude Code or free services (Groq, Gemini, OpenRouter …), with automatic fallback to another provider
First audio about 1.5 to 2.5 seconds after the caller finishes a sentence
Admin panel: opening hours and real free slots, CalDAV calendars (Nextcloud, iCloud …) read and write, confirmation e-mail, Twilio number with the webhook connected automatically
Import from the company website: the receptionist reads up to 30 pages and Claude builds the phone sheet from them
Real-world example: set up and tested for a small business from its real website

Screenshots

Test call in the browser: voice or chat, the conversation stays written down.

Admin panel, “Import from the website”: the phone sheet is filled in automatically (made-up example: Studio Rossi).

Opening hours, agenda rules and the next free slots, computed from hours, bookings and calendars.

Tech

JavaScript Python Parakeet Qwen3-TTS CalDAV Twilio

Status

Tested with simulated calls, browser chat and a local CalDAV server. Not yet tested: a real Twilio number and a real Nextcloud. The source code is not public yet.