Fabius is an early-stage startup from YCombinator's 2023 batch that is revolutionizing sales effectiveness by helping team’s focus on high-potential deals, build strong business cases, and improve visibility for sales leaders. The company’s AI-based platform identifies misaligned prospects, ensuring reps concentrate on the most likely deals to close, while assisting in communicating ROI and strengthening weak business cases. With enhanced visibility, sales leaders can provide targeted coaching to maximize revenue. Fabius was founded in 2020 by Andrew Day and Neil Madsen.