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LetterAI (LetterAICo) announced a $40M Series B on 2026-02-25; founders Ali…

Brief

LetterAI announced a $40M Series B on Feb 25, 2026. After a mid-YC pivot from dev tools to sales AI, founders Ali Akhtar and Armen Forget secured early enterprise traction—Lenovo closed during the batch and that deal has grown 10×. The company provides personalized training tools and is live with Adobe, Novo Nordisk, Plaid, and Kong.

Why it matters

LetterAI (LetterAICo) announced a $40M Series B on 2026-02-25; founders Ali Akhtar and Armen Forget are leading the company building AI tools to help sales teams ramp faster with personalized training.

Key details

  • LetterAI pivoted mid–Y Combinator from a dev-tools startup to sales AI; Lenovo closed as a customer during the YC batch and that Lenovo deal has grown 10× since.
  • LetterAI is now live with enterprise customers Adobe, Novo Nordisk, Plaid, and Kong and was featured on Y Combinator's Founder Firesides.
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