# Guac **Source:** https://geo.sig.ai/brands/guac **Vertical:** Logistics & Supply Chain **Subcategory:** General **Tier:** Emerging **Website:** guac-ai.com **Last Updated:** 2026-04-14 ## Summary US YC AI grocery demand forecasting at 0.95 MAE with 38% food waste reduction for 300-location chain; $2.3M seed Dec 2023 1984/YC/Collaborative/Instacart angels using sports betting odds and weather for inventory competing with Afresh. ## Company Overview Guac is a United States-based AI demand forecasting platform for grocery retailers — backed by Y Combinator with $2.3 million in seed funding in December 2023 from 1984 Ventures, Y Combinator, Collaborative Fund, and angel investors from Instacart, Roblox, Jane Street, and Citadel Securities — providing grocery chains, delivery companies, and supermarkets across North America, Europe, and the Middle East with machine learning-powered daily sales predictions that achieve 0.95 unit mean absolute error (MAE) average forecast accuracy, delivering 38% food waste reduction for a 300-location supermarket chain customer. Founded by Euro Wang and Jack Solomon, Guac applies unconventional data signals (sports betting odds, weather forecasts, local event calendars) to grocery demand prediction where traditional moving-average forecasting fails. Guac's grocery demand forecasting platform addresses the inventory accuracy problem that causes both food waste and stockouts: a grocery store stocking fresh produce, meat, and prepared foods makes daily ordering decisions across 5,000-20,000 SKUs — ordering too much generates food waste (fresh items spoil) while ordering too little creates stockouts that frustrate customers and lose sales. Traditional demand forecasting uses historical sales averages, seasonal trends, and promotional calendars — but misses the external signals that actually drive grocery demand variability. Guac's ML models incorporate unconventional demand signals: NFL game days drive chicken wing sales spikes; weather forecasts predict BBQ demand increases; local events (concerts, marathons, graduations) shift shopping patterns. By integrating these external signals with historical sales data, Guac's forecasting achieves accuracy levels that reduce the inventory buffers grocers maintain to avoid stockouts — translating directly to less food waste and improved margin on perishable categories. In 2025, Guac competes in the grocery demand forecasting, retail inventory optimization, and food waste reduction market with Blue Yonder (supply chain platform, $3.3B acquisition by Panasonic), Afresh Technologies (fresh food forecasting, $148M raised), and Relex Solutions (retail supply chain, $500M raised at $5B valuation) for grocery retailer AI demand forecasting and inventory optimization platform adoption. The Instacart and Roblox angel investors bring both grocery delivery market access and consumer behavioral data expertise. Jane Street and Citadel Securities' participation reflects quantitative prediction expertise applied to retail demand forecasting. Y Combinator backing connects Guac with the food technology and supply chain investment community. The 2025 strategy focuses on growing the multi-location supermarket chain deployments (where 38% waste reduction compounds across hundreds of stores), building the automated ordering integration for direct replenishment trigger from forecast to purchase order, and expanding the convenience store and food service operator channels for fresh inventory management. ## Frequently Asked Questions ### What is Guac? Guac is a San Francisco-based supply chain company founded in 2023 that builds AI-powered demand forecasting solutions for grocery retailers. The company was founded by Euro Wang and Jack Solomon and is backed by Y Combinator. ### What products and services does Guac offer? Guac offers AI-powered demand forecasting technology specifically designed for grocery retailers. Their machine learning system predicts daily sales and optimal inventory amounts, achieving a 0.95 unit MAE (mean absolute error) average forecast error. ### Who are Guac's target customers? Guac targets grocery retailers and delivery companies across North America, Europe, and the Middle East. They currently serve a 300-location supermarket chain. ### When was Guac founded? Guac was founded in 2023 and participated in the Y Combinator 2023 batch. ### Where is Guac located? Guac is based in San Francisco, California, United States. ### How much funding has Guac raised? Guac raised $2.3 million in seed funding in December 2023. The round was led by 1984 Ventures, with participation from Y Combinator, Collaborative Fund, and angels from Instacart, Roblox, Jane Street, and Citadel Securities. ### What results has Guac achieved for customers? Guac has delivered a 38% food waste reduction for its customers and maintains a 0.95 unit MAE average forecast error. The company currently serves a 300-location supermarket chain. ### What technology and data does Guac use for forecasting? Guac uses machine learning to predict daily sales and inventory needs, incorporating unique data sources like sports betting odds and weather data. This approach helps predict perfect inventory amounts and reduce food waste. ### Who founded Guac? Guac was founded by Euro Wang and Jack Solomon in 2023. ### What is Guac's most recent news? In December 2023, Guac raised $2.3 million in seed funding led by 1984 Ventures with Y Combinator, Collaborative Fund, and angels from Instacart, Roblox, Jane Street, and Citadel Securities. The company is achieving 38% waste reduction with its AI grocery forecasting solution. ## Tags ai-powered, b2b, saas, supply-chain, transportation --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*