Mandolin

IMPORTANT DATA-QUALITY NOTE: This profile documents the entity that is verifiably Greylock's current portfolio company at the domain mandolin.com -- an AI-agent automation startup for specialty drug access, legally Coral Automation, Inc., doing business as 'Mandolin.' Research for this profile also surfaced a completely different, unrelated company that also used the name 'Mandolin': a pandemic-era live concert livestreaming / virtual-events platform based in Indianapolis, founded around June 2020 by co-founder/CEO Mary Kay Huse, which raised a $5M seed round (October 2020) and a $12M Series A (June 2021, oversubscribed, led by 645 Ventures and Foundry Group, with High Alpha and Marc Benioff's TIME Ventures participating; 645 Ventures Managing Partner Nnamdi Okike joined its board). That company hosted livestreamed and hybrid concerts (its 'Live+' platform and partnerships with artists such as Lil Wayne, Fitz and The Tantrums, Andrew Peterson, and Lauren Daigle, and festivals including Planet Bluegrass and Uproar), integrated with Chartmetric, Bandsintown, and Seated, and by mid-2022 reported 1,000+ artists on the platform and 50-75 livestreamed shows per month. Crunchbase data shows CEO Mary Kay Huse's tenure at that company ended in May 2023 (she has since become President & GM of the Indy Ignite pro volleyball team), and no evidence of Greylock investment in that entity, nor evidence of its continued independent operation, was found in this research -- its current status could not be confirmed, and it is NOT the entity currently occupying the mandolin.com domain or Greylock's portfolio. The two 'Mandolins' appear to be an unrelated naming coincidence: the domain mandolin.com is now used exclusively by the healthcare AI company described below. All facts below pertain only to the current, Greylock-backed, healthcare-AI Mandolin (Coral Automation, Inc.); none of the livestreaming company's founders, funding, or metrics are included in the structured fields of this record to avoid conflating the two businesses.

Mandolin (Coral Automation, Inc.) was co-founded by Will Yin (CEO) and Rohit Rustagi (COO). Crunchbase records Will Yin's tenure as CEO/Co-Founder of Mandolin beginning in May 2024, suggesting the company was founded or rebranded to the Mandolin name around that time; an exact founding date and legal-incorporation date were not confirmed in public sources. Yin is also listed by Crunchbase as Co-Founder, President, and CTO of a separate company called 'Jupiter,' though the nature of that company and whether the role is concurrent or prior was not independently verified in this research. The company is headquartered in San Francisco, California.

Mandolin's stated mission is to replace 'fragmented back-office workflows' in specialty pharmacy and infusion care with AI agents that handle the complete patient-access lifecycle -- from referral intake through benefits verification, prior authorization, and revenue-cycle/claims work -- so that organizations can scale patient volume without proportional headcount growth. The company frames its market opportunity against a specialty-pharmaceutical spend of roughly $250 billion annually in the U.S. today, projected to grow to $1.5 trillion by 2033. Company-published case-study figures claim a 24x improvement in document-processing speed for at least one customer, elimination of multi-day prescription backlogs, and support for scaling operations to 4,500+ patients per month without adding staff; the company also states its platform is operational across 'hundreds' of clinics and infusion centers and aims to support roughly one million therapy journeys annually, though these figures are self-reported and were not independently verified.

Business model

B2B software/AI-agent platform sold to infusion centers, specialty pharmacies, and health systems; positioned as a vertical AI-agent (agentic AI) automation vendor rather than a traditional SaaS tool.

Not publicly disclosed. Likely enterprise contract/subscription pricing tied to agent deployment and volume of therapy journeys/claims processed (no public pricing page found).