Letter AI
PrivateLast Round
Series B
Feb 24, 2026
Total Funding Raised
$53.3M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Letter AI operates in Enterprise Software and is based in Chicago, Illinois. Its latest recorded funding round was a Series B round in February 2026.
Letter AI is a business software company that provides an AI-native revenue enablement platform for sales and go-to-market teams.
Sector
Enterprise Software
Verticals
Sales Enablement, NLP & Conversational AI, Workflow Automation, Content Creation, Business Intelligence
Business Model
B2B
Customer Profile
Subscription SaaS
AI Layer
Application
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Letter AI Comparables
Compare Letter AI with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| GTM Buddy | 86% | |
| SalesHood | 81% | |
| Seismic | 81% |
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Letter AI Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Feb 24, 2026 | ||||
| Series A | Oct 21, 2025 | ||||
| Seed | May 1, 2024 |
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Key People
Founding team and executive leadership
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Letter AI Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Stage 2 Capital | Series B, Series A |
| Pioneer Fund | Seed |
| Mangusta Capital | Series A |
| Formus Capital | Series B |
| Lightbank | Series A, Series B |
| TechNexus Venture Collaborative | Series B, Seed |
| Battery Ventures | Series B |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 25, 2026
Grew 21% QoQ, from 53 to 64 employees.
- Aug 18, 2026
Grew 29% QoQ, from 48 to 62 employees.
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Letter AI Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
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Frequently Asked Questions
Common questions about Letter AI's valuation, stock price, and market status.
Is Letter AI a public or private company?
Letter AI is a private company.
What is the current stock price of Letter AI?
Letter AI is a private company, so its shares have no public market price. Caplight tracks Letter AI's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Letter AI worth (valuation)?
Valuation information for Letter AI is not publicly available.
Can I buy Letter AI stock?
Letter AI shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Letter AI's last funding round?
Letter AI's most recent funding round was Series B on February 24, 2026.
Who are the main investors in Letter AI?
Key investors in Letter AI include Stage 2 Capital, Battery Ventures.
Will Letter AI IPO soon?
No public IPO plans have been announced for Letter AI.
How can I track Letter AI secondary market activity?
Caplight tracks bids, offers, and trades in Letter AI's shares on secondary markets.