Sagar Shankaran is the founder of CallSphere, where he builds production AI voice and chat agents deployed across healthcare, hospitality, real estate, and home services. He writes about agentic AI, LLM engineering, and shipping voice agents that handle real calls in production.
Latest articles
A Guatemala City Buyer Calls a Houston Used-Truck Lot in Spanish to Buy and Export a Pickup
A hauler in Guatemala City wants a diesel pickup from a Houston lot. In Spanish on his side and English on yours, the call covers VIN, title and the trip to port.
Industry SolutionsBuying an Orlando Vacation Home From São Paulo: The Portuguese Call With Your Florida Agent
A São Paulo family wants a pool home near the Orlando parks. They speak Portuguese, the agent hears English, and HOA and rental-rule questions finally get answered.
Industry SolutionsA Hamburg Snowbird Calls a Naples Pool and AC Company in German Before Flying South
Five weeks before his flight, a Hamburg retiree calls a Naples, FL pool and air-conditioning company in German; the dispatcher hears English and books the visit.
Industry SolutionsBrazilian Guests Call a Miami Beach Night Desk in Portuguese: Late Arrival, a Crib, a Lost Bag
A Brazilian family stuck at MIA calls the Miami Beach hotel at 1 a.m. in Portuguese. One clerk, three requests, and how a live phone interpreter keeps the room.
Industry SolutionsA Stuttgart Skier's Knee Follow-Up With a Colorado Orthopedic Clinic, Held in German
An injured skier from Stuttgart books an orthopedic follow-up in Colorado before her Denver flight; she speaks German, the clinic hears English, records go home with her.
Industry SolutionsSantos Coffee Exporter, Houston Importer: A Portuguese Phone Call About a Rolled Container
A rolled container and a missing pre-shipment sample: the Santos exporter speaks Portuguese, the Houston importer hears English, and one call replaces a long email chain.
Industry SolutionsGetting a Savannah-Area Rental Ready From Ulsan: A Korean Engineer Calls the HVAC Crew
An engineer in Ulsan speaks Korean, the Pooler HVAC dispatcher hears English, and the rental's AC, water heater and lockbox get sorted before his family lands.
Industry SolutionsA Client in Almaty Asks a Miami Accountant, in Russian, What His Florida LLC Owes Each Year
A Kazakh founder phones a Miami accounting practice in Russian about his Florida LLC's annual report and IRS forms; the accountant answers in English, live, both ways.
Industry SolutionsBraces Started in Brazil: Portuguese-Speaking Parents Call a Boston-Area Pediatric Dentist
A family just moved from Minas Gerais to MetroWest Boston with two kids in braces. The parents speak Portuguese, the dental front desk hears English, live on the call.
Industry SolutionsSeoul Parents Call a Koreatown CPA About Their Student's US Taxes and Money From Home
Parents in Seoul speak Korean, the Los Angeles CPA answers in English, and the call covers their student's US return, consent rules and money sent from Korea.
Industry SolutionsA Grandmother From Chengdu Calls an Irvine Telehealth Line at 11 p.m. in Mandarin
A visiting grandmother speaks Mandarin, the telehealth doctor hears English, and the night call ends with a plan, not a 12-year-old interpreting her symptoms.
Industry SolutionsA Mother in Riga Calls a Boston-Area Therapist in Russian About Her Adult Daughter
A worried mother in Riga phones a Boston therapy practice in Russian about her grad-student daughter: what staff can say, what they cannot, and how she can help.