Call Center Startups funded by Y Combinator (YC) 2026

Callab AI - AI voice agents for contact centers. Over half the world's contact center infrastructure still runs on legacy telephony (CUCM, on-prem PBX, carrier-grade SIP) - a $70B+ market where current AI voice platforms can't natively integrate. We plug into these environments without requiring a rip-and-replace. We serve clients across three continents, including brands like DunkinDonut.

Careforce builds AI Workers for healthcare orgs to take on coordination burden from staff and reduce time of care by autonomously identifying and outreaching patients (through phone, text, email, & mail) to schedule visits, book screenings, complete pre-post, and onboard. These agents require no integration, can navigate all tools, speak 29 languages, come with 50+ outreach scripts and have a remarkable 80% conversation-to-booking closing rate.

Simple AI is building AI voice that sells. Our voice agents know every detail about every product SKU. They’re trained on the best reps, so every call is handled at top-performer quality. Simple AI agents already outperform trained live reps by 30% on conversion and upsell.

Dodo turns client communication into booked appointments, completed workflows, and predictive analytics, powering millions of client interactions annually for hundreds of clinics. Our multi-agent system autonomously runs scheduling, refills, intake, and follow-ups across calls and texts — integrating directly with clinic systems to cut communication overhead ~70% and act like a trained CSR 24/7.

Domu automates debt-collection calls, texts, and emails for financial services and healthcare. We work with some of the largest financial institutions in the world and win by doing what nobody else is willing to do. We are hiring :)

At Arini, we’re building the operating system for dental groups. Phones are the backbone of dental operations — 80% of appointments are still booked over the phone — yet practices miss 20–30% of inbound calls. That’s millions in lost revenue every month. Patient engagement is the biggest bottleneck to growth in dentistry, and we’ve built the most comprehensive AI-powered patient engagement suite in the industry. Arini manages calls, texts, and bookings. We’re going after a $220B, overlooked industry that still runs on legacy systems and outdated workflows. Arini is bringing AI to every part of the dental stack.

MosaicVoice makes it easy for call centers to automate their Quality Assurance function. Our software listens to customer conversations in real-time and identifies and alerts agents and managers to any compliance violations as they happen