Customization Startups funded by Y Combinator (YC) 2026

Huscarl is an AI-native actuarial advisory for large companies ($50M+ turnover) to optimize their insurance decisions. Our approach helps them save ~30% premiums for similar coverage, and manage their own risks like an insurance company would. Our technology: - scans through risks and quantifies them - translates complex B2B insurance policies into actuarial language - tells if companies are paying the right $ for their coverage - tells them what to keep, change or kill in their insurance program

Gemnote creates custom merch, swag and gifts for the modern business. Our expert team helps you curate, source, warehouse, fulfill and ship your branded merchandise and company swag, so you don't have to lift a finger. Our clients love our full-service platform and they are some of the biggest companies in the world, including Airbnb, Google, Meta, Slack, Netflix and more.

Vastrm Fashion™ (pronounced vas' trum) Vastrm was started to solve a basic problem: Shirts that don’t fit well! Mass produced shirts were meant to accommodate a wide variety of body types with one standard size, and different brands have different sizing standards, making shopping difficult--many men must shop in 4 - 5 different stores before finding a shirt that actually fits! By providing a home try on program and giving the ability to make custom fit adjustments to all of their apparel, Vastrm allows its customers to finally hone in on and find the perfect fit for their unique body types. Tang came up with the idea for Vastrm, which is a Sanskrit word for cloth, when a customer told him he had purchased a perfect shirt in Italy and has never been able to find the same fit again. He was considering flying back to Italy to track the shirt maker down, but Jonathan managed to adjust Vastrm shirts to the same fit.