United States · 
Who invested in Letter AI?
Letter AI's investors include Y Combinator, Pioneer Fund, Battery Ventures, Soma Capital and Lightbank, and 3 more on record. Battery Ventures led its latest round.
20252026
$2.7MSeed$40MSeries B
United States · Series B startup
Who invested in Letter AI
2 rounds we have observed, with the 8 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 8 months ago
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Funding summaryUpdated 5 Nov 2026
$43Mraised across 2 rounds since 2024, from 2 sources
$2.7MSeed$40MSeries B
- Latest round
- Series B, $40MFeb 2026
- Led by
- Battery Ventures
- Step-upi
- 14.8×
- Investors
- 8 (1 led)
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed, $2.7M Jun 2024
- Biggest round
- $40M Series B · Feb 2026
- Between rounds
- 21 months from the last two
The rounds
- Feb 2026Series B$40M4 new2 returning
Reported by Ventureburn
- Jun 2024
Founders and team
From Letter AI's own website: 5 on the team.
- Josh AllenChief Revenue Officer
- Danny WassermanGlobal Head of Enablement & Programs
- Cam BarnesBusiness Success Director
- Property Ownership ContractDESIGNER OWNS (style these on .home_hero_rotate in Webflow):
- Vijay GopalLenovo Solutions & Services Lead
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
This firm lists Letter AI as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Letter AI
How much has Letter AI raised?
Letter AI has raised $43M across 2 rounds since 2024.
When did Letter AI last raise?
Letter AI's most recent round was a Series B of $40M in Feb 2026, led by Battery Ventures.
What was Letter AI's biggest round?
Its most recent round, $40M in Feb 2026, is also its largest on record.
Who backed Letter AI first?
Letter AI's first round on record, in Jun 2024, was backed by Y Combinator, Pioneer Fund and Soma Capital and 1 others.
What stage is Letter AI at?
Letter AI's latest named round is a Series B, in Feb 2026.
Where is Letter AI based?
Letter AI is based in the United States.
Who led Letter AI's rounds?
Battery Ventures led the Series B in 2026.
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