Letter AI

Chicago, IL · Founded 2023 · Privately Held (backing)

Developer of a generative artificial intelligence platform designed to accelerate content creation for sales teams. Letter AI is based in Chicago, IL and was founded in 2023. Its last reported valuation was $306 million in Feb 2026. It has raised $53.4 million.

Last reported valuation
$305.5M
Oct 2026
Priced at
—
Total raised
$53.4M
Last round
—

Who backs Letter AI?

10 investors
InvestorType
Y CombinatorOther
Pioneer FundVenture capital
Soma CapitalVenture capital
Battery VenturesGrowth equity
Lightbank (Venture Capital)Venture capital
TechNexus Venture Collaborative—
Stage 2 CapitalVenture capital
Formus CapitalVenture capital
Mangusta CapitalVenture capital
Northwestern Mutual Future Ventures—
The directory is free. Investor activity — the working column — is Pro.Unlock prospecting columns

Membership and data by Private Market View

Letter AI investors

10 investors are on record for Letter AI, including Y Combinator, Pioneer Fund, Soma Capital and Battery Ventures. By type, the record holds 6 venture capital firms and 1 growth equity firm.

Free account
More of Letter AI with a free account
  • ·Watch Letter AI: the Monday email on marks, rounds and moves
Create free account
No card required

Membership and data by Private Market View

For fundraisers
Work this list, don’t just read it

These 10 firms already write checks for companies like Letter AI. Build the wider list: every firm that has backed a company like this one, ranked by how often and how recently.

Find investors like these →

Membership and data by Private Market View