KhairoAI

Khairo is an AI receptionist for owner-run appointment businesses like car services, dental clinics and salons. The owner forwards their number to their assigned business phone number or use the phone number we provide directly and Khairo answers every call and books into their Google calendar or the Khairo integrated calendar. These businesses still live on the phone, and when the mechanic is under a car, a missed call goes to the next garage. We had the platform before the event, answering Bulgarian calls for a select few Bulgarian businesses, and tested Meta's Muse Voice Transcribe on it two days before kickoff (Oct 25–26). During the hackathon we built on it, and we made Meta's models run the whole conversation and made it feel like talking to a person. Muse Spark 1.2 became the receptionist's brain. It talks to the caller and books through calendar tools (find_slots, hold_slot, confirm_booking). We evaluated it first because the right tool with the right inputs in 36 of 36 tries, then moved every live receptionist onto it. Muse Voice Transcribe's code-switching lets a call follow the caller from Bulgarian into English on their first sentence, without reopening the stream. Booking turns no longer wait in silence, Muse Spark echoes the caller's request while a tool runs, and Meta's Llama 3.3 writes a two-word acknowledgement in parallel when Muse Spark goes straight to a tool. With one question per turn and shorter replies, the median from the caller's last word to the receptionist's voice went from 1.9s to 1.5s. An English receptionist for a demo garage that anyone can call: in the browser at khairo.ai/demo, or at +1 (415) 873-5520. The open-source repo has the Muse clients and a runnable receptionist with the same browser demo.