Letter AI
PrivateLast Round
Series B
Feb 24, 2026
Total Funding Raised
$53.3M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
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, Workflow Automation, NLP & Conversational AI, Marketing
Business Model
B2B
Customer Profile
Subscription SaaS
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Letter AI Comps
Public and private peers based on sector, stage, and business model.
| Company | Status | Est. Valuation | Rev Multiple |
|---|---|---|---|
| OpenAI | Private | $86.0B | ~40x |
| Cohere | Private | $5.0B | -- |
| Competitor 1 | Public | $XX.XB | XXx |
| Competitor 2 | Public | $XX.XB | XXx |
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 |
Key People
Founding team and executive leadership
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 |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 6, 2026
Open roles increased from 0 to 5, representing 16% of headcount.
- Jun 22, 2026
Grew 47% QoQ, from 36 to 53 employees.
Letter AI Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation |
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Frequently Asked Questions
Common questions about Letter AI's valuation, stock price, and market status.