Letter AI Funding: $53M Raised, Series B (2026)

Letter AI is a SaaS company based in Chicago, IL. It has raised $53M in total funding. Latest round: Series B. Backed by Battery Ventures.

Letter AI funding overview

Letter AI is a SaaS company based in Chicago, IL. Letter AI has raised $53M in total disclosed funding. That places its disclosed total in the $25M–$100M range. Its most recent disclosed round is a Series B announced in February 2026. The round record for Letter AI runs through 2026; nothing later has been disclosed. Investors on record include Battery Ventures.

Letter AI at a glance

Total raised
$53M
Latest round
Series B
Latest round date
February 2026
Industry
SaaS
Headquarters
Chicago, IL
Notable investors
Battery Ventures

Frequently asked about Letter AI funding

How much has Letter AI raised?
Letter AI has raised $53M in total disclosed funding across the rounds on record.
Who has invested in Letter AI?
Battery Ventures are named among the investors backing Letter AI.
What was the latest Letter AI funding round?
The most recent disclosed round is a Series B, announced in February 2026.
Where is Letter AI based?
Letter AI is based in Chicago, IL.
What sector does Letter AI operate in?
Letter AI is tracked under SaaS from Chicago, IL, with $53M in disclosed funding.
When did Letter AI last raise?
The last disclosed Letter AI round closed in February 2026 at Series B.

Every Letter AI figure above comes from filings and announced rounds in the StartupFundraising company database and is revised as new rounds are recorded. The lists below compare SaaS companies in Chicago at a similar stage.

Letter AI pitch deck

The investor deck Letter AI used to raise — 2024, Series B, 8-slide deck is broken down slide by slide, including the slides it leads with and the questions it leaves open.

Letter AI founders (1)

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Company funding database · Investor directory · Founder database · Mega-rounds 2026