How much funding has Letter AI raised?

Letter AI has raised $51.1M in total funding, most recently a Series B round.

Who are Letter AI's investors?

Letter AI's investors include Stage 2 Capital, Battery Ventures, Y Combinator Continuity Fund, Lightbank, Northwestern Mutual Future Ventures, Formus Capital.

Where is Letter AI headquartered?

Letter AI is headquartered in Chicago, Illinois, United States.

What industry is Letter AI in?

Letter AI operates in Artificial Intelligence, SaaS, Sales & Marketing.

Letter AI

Empowering B2B sellers with AI-powered training, coaching, and content

Chicago, United States · Founded 2023 · $51.1M raised

Artificial Intelligence

SaaS

Sales & Marketing

YC S23

Headquarters: Chicago, Illinois
Employees: 1–10
Founded: 2023
Business Model: B2B

Website: letter.ai
Total Funding: $51.1M
Last Round: $40.0M Series BFeb 2026
Rounds: 5

About

Letter AI is the world's first generative AI powered revenue acceleration platform. Build and maintain all the collateral and training you need 10x faster with generative AI. Personalize instantly by vertical or individual customers using existing data. Ask questions in real-time to your own co-pilot with expertise in your data. Scale coaching with realistic and hyper-personalized AI roleplay. Reach out to learn more about how both large enterprise like Lenovo and Adobe and growing startups like Paro and DealerBuilt are delivering real value for their revenue teams using the Letter AI platform.

Summary

Letter AI is an Artificial Intelligence company based in Chicago, United States, founded in 2023. It has raised $51.1M in total across 5 rounds, most recently a $40.0M Series B round in Feb 2026. Investors include Stage 2 Capital, Battery Ventures and Y Combinator Continuity Fund.

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