# OpenCall.ai

> OpenCall.ai is a San Francisco AI startup (Y Combinator W24) that builds AI voice agents to answer, route, and resolve business phone calls. Trained on thousands of real-world workflows, its agents book appointments, verify insurance, and update records, integrating with existing software and going live in under an hour. The company targets service businesses - especially healthcare practices - promising to capture missed-call revenue while cutting call-handling costs by 50-80%.

- **Founded:** 2022
- **Headquarters:** San Francisco, California, United States
- **Founders:** Oliver Silverstein (CEO & Co-Founder), Arthur Silverstein (Co-Founder), Nicholas Lee (Co-Founder), Eric Mei (Co-Founder)
- **Team size:** ~9 employees
- **Products:** OpenCall AI Voice Agent, Workflow Automation & Integrations, HIPAA-Compliant Healthcare Suite
- **Notable:** Accepted into Y Combinator's Winter 2024 batch., Built proprietary low-latency voice models trained on thousands of real-world workflows., Enables businesses to deploy an AI call center in under an hour with no code.

## Products & services

- **OpenCall AI Voice Agent** — An AI receptionist/agent that answers inbound calls, holds natural conversations, books appointments, routes calls, and resolves inquiries 24/7 using proprietary low-latency voice models.
- **Workflow Automation & Integrations** — Executes multi-step workflows behind a call - insurance verification, EHR/record updates, appointment scheduling, reminders - integrating with existing tools like HubSpot, Airtable, and practice-management systems with no code required.
- **HIPAA-Compliant Healthcare Suite** — HIPAA-compliant call handling tailored to medical, dental, and dermatology practices, including insurance jargon handling, provider preference management, and automated patient intake.

## Achievements

- Accepted into Y Combinator's Winter 2024 batch.
- Built proprietary low-latency voice models trained on thousands of real-world workflows.
- Enables businesses to deploy an AI call center in under an hour with no code.
- HIPAA-compliant offering targeting regulated healthcare use cases.
- Claims 50-80% reduction in call-handling costs for customers.

## Latest updates

- **2024-01** — Joined Y Combinator Winter 2024 batch as 'practice admin run by AI.'
- **2024-02** — Closed early funding round (reported $6M) with CoreNest Capital and Y Combinator.
- **2024-03** — Publicly launched pitch to spin up AI call centers in under an hour, highlighted by Y Combinator.

## Links

- Website: https://opencall.ai
- LinkedIn: https://www.linkedin.com/company/opencall-ai
- Facebook: https://facebook.com/Opencallcom

---

Profile page: https://yespress.io/opencall-ai-yc-w24
Published by YesPress — https://yespress.io
Last updated: 2026-07-30