YC launches Alt‑X agent
Y Combinator unveiled Alt‑X, an AI agent that auto‑builds Excel underwriting models from real‑estate docs and cites the source for every number—essentially automating the grunt work of model setup. That makes structured model generation repeatable, but raises questions about auditability and how outputs translate to production code. (x.com)
Alt‑X is led by founder and CEO Ryan Samadi, who previously worked at Citadel’s commodities fund and studied computer science at Stanford where he ran a hedge‑fund investing program. (ycombinator.com) Y Combinator published Alt‑X’s launch post and demo inviting real‑estate investors and acquisition analysts to “drop in an offering memorandum” to generate a fully built, auditable Excel model, and the company linked an official launch video on YouTube. (ycombinator.com) The product is distributed as an Excel add‑in in an open beta with a Windows download and marketing copy that claims typical analyst tasks that take “3 hours” can be reduced to “30 seconds.” (alt-x.co) Alt‑X markets 100% local processing — stating “every calculation runs on your machine” and “your models stay on your machine” — while advertising SOC2 compliance and options for on‑premise enterprise deployment. (alt-x.co) The website lists automated model‑quality features including detection and repair of circular references, hard‑coded values and broken links, application of institutional‑grade formatting, and exportable audit‑ready reports that map formulas and dependencies. (alt-x.co) YC’s company profile for Alt‑X frames the startup’s objective as making model generation repeatable and reliable at institutional scale, with the stated goal of enabling the platform to “underwrite billions.” (ycombinator.com)
