Letter AI Overview

  • Year Founded
  • 2023

Year Founded

  • Status
  • Private

  • Employees
  • 60

Employees

  • Latest Deal Type
  • Series B

  • Latest Deal Amount
  • $40M

  • Investors
  • 11

Letter AI General Information

Description

Developer of an AI-native revenue enablement platform designed to unify learning, content, coaching, and buyer engagement into a seamless experience. The company's platform offers AI-powered automation, centralized knowledge management, and analytics tools, enabling enterprise and high-growth organizations to streamline sales processes and improve execution efficiency.

Contact Information

Website
www.letter.ai
Formerly Known As
Tractatus AI
Ownership Status
Privately Held (backing)
Financing Status
Venture Capital-Backed
Corporate Office
  • 550 West Van Buren
  • Suite 1150
  • Chicago, IL 60069
  • United States
+1 (737)
Primary Industry
Business/Productivity Software
Vertical(s)
SaaS, Marketing Tech, Artificial Intelligence & Machine Learning
Corporate Office
  • 550 West Van Buren
  • Suite 1150
  • Chicago, IL 60069
  • United States
+1 (737)

Letter AI Timeline

202420252026
Financing RoundCaptured Employee CountEstimated Employee Growth

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Letter AI Valuation & Funding

Deal Type Date Amount Raised to Date Post-Val Status Stage
4. Early Stage VC (Series B) 25-Feb-2026 $40M Completed Generating Revenue
3. Early Stage VC (Series A) 15-Aug-2025 Completed Generating Revenue
2. Early Stage VC (Series A) 10-Jun-2024 $2.7M $2.83M Completed Generating Revenue
1. Accelerator/Incubator 01-Jul-2023 $125K $125K Completed Generating Revenue
To view Letter AI’s complete valuation and funding history, request access »

Letter AI Cap Table

Stock # of Shares
Authorized		 Par Value Dividend Rate (%) Original
Issue Price		 Liquidation Liquidation
Pref. Multiple		 Conversion Price % Owned
Series B
Series A-4
Series A-3
Series A-2 820,273 $0.000010 $0.15 $0.15 1x $0.15 4.71%
Series A-1 2,200,302 $0.000010 $5.4 $5.4 1x $5.4 12.64%
To view Letter AI’s complete cap table history, request access »

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Letter AI Comparisons

Description
Primary
Industry
HQ Location
Employees
Total Raised
Post Valuation
Last
Financing
Details
Developer of an AI-native revenue enablement platform designed to unify learning, content, coaching, and buyer engagemen
Business/Productivity Software
Chicago, IL
60 As of 2026

San Francisco, CA
 

San Carlos, CA
 
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Letter AI Competitors (12)

One of Letter AI’s 12 competitors is Dock, a Venture Capital-Backed company based in San Francisco, CA.

Company Name Financing Status Location Employees Total Raised Last Financing Date/Type Last Financing Amount
Dock Venture Capital-Backed San Francisco, CA
WorkRamp Private Equity-Backed San Carlos, CA
SalesHood Venture Capital-Backed San Francisco, CA
Highspot Formerly VC-backed Seattle, WA
MindTickle Venture Capital-Backed San Francisco, CA
You’re viewing 5 of 12 competitors. Get the full list »

Letter AI Signals

Growth Rate

Weekly
Growth
Weekly Growth

Size Multiple

Median
Size Multiple

Key Data Points

Similarweb Unique Visitors

Majestic Referring Domains

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Letter AI Investors (11)

Investor Name Investor Type Holding Investor Since Participating Rounds
Battery Ventures Growth/Expansion Minority
SaaS Ventures Venture Capital Minority
Lightbank (Venture Capital) Venture Capital Minority
Mangusta Capital Venture Capital Minority
Stage 2 Capital Venture Capital Minority
You’re viewing 5 of 11 investors. Get the full list »

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Letter AI FAQs

  • When was Letter AI founded?

    Letter AI was founded in 2023.

  • Where is Letter AI headquartered?

    Letter AI is headquartered in Chicago, IL.

  • What is the size of Letter AI?

    Letter AI has 60 total employees.

  • What industry is Letter AI in?

    Letter AI’s primary industry is Business/Productivity Software.

  • Is Letter AI a private or public company?

    Letter AI is a Private company.

  • What is the current valuation of Letter AI?

    The current valuation of Letter AI is .

  • What is Letter AI’s current revenue?

    The current revenue for Letter AI is .

  • How much funding has Letter AI raised over time?

    Letter AI has raised $53.4M.

  • Who are Letter AI’s investors?

    Battery Ventures, SaaS Ventures, Lightbank (Venture Capital), Mangusta Capital, and Stage 2 Capital are 5 of 11 investors who have invested in Letter AI.

  • Who are Letter AI’s competitors?

    Dock, WorkRamp, SalesHood, Highspot, and MindTickle are some of the 12 competitors of Letter AI.

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