Uploaded February 2026 | Updated September 2026, 1 week ago
In this episode of Founder Firesides, YC General Partner Diana Hu talks with Ali Akhtar (Co-founder & CEO) and Armen Forget (Co-founder & CTO) of Letter AI, who just announced a $40M Series B. Letter AI is an AI-native sales enablement platform that helps revenue teams ramp faster, generate personalized buyer content during live deals, and practice high-stakes conversations before they happen. After pivoting during YC, the company landed enterprise customers like Lenovo in the batch and has since expanded rapidly. They discuss what they learned from the pivot, how they closed major customers early, and why AI is reshaping the future of sales.
Apply to Y Combinator: ycombinator.com/apply
Work at a startup: ycombinator.com/jobs
In this episode of Founder Firesides, YC General Partner Diana Hu talks with Ali Akhtar (Co-founder & CEO) and Armen Forget (Co-founder & CTO) of Letter AI, who just announced a $40M Series B. Letter AI is an AI-native sales enablement platform that helps revenue teams ramp faster, generate personalized buyer content during live deals, and practice high-stakes conversations before they happen. After pivoting during YC, the company landed enterprise customers like Lenovo in the batch and has since expanded rapidly. They discuss what they learned from the pivot, how they closed major customers early, and why AI is reshaping the future of sales.
Apply to Y Combinator: ycombinator.com/apply
Work at a startup: ycombinator.com/jobs
