Empowering B2B sellers with AI-powered training, coaching, and content
Public company, workplace, funding, and market signals
Letter AI is a Chicago-based, YC-backed AI-native revenue enablement platform that helps revenue teams create, personalize, coach, and engage buyers faster with AI-powered content, training, deal guidance, and sales rooms.
Primary product
AI-native revenue enablement platform (Letter Compass, AI-powered training/coaching, content management, AI agent, and deal pursuit/RFP automation)
Founded
2023
Headquarters
Chicago, Illinois, United States
Team size
11-50
Work style
Hybrid
Industry
Technology, Information and Internet
Sub-industry
AI revenue enablement / sales enablement software
Offices
0 jobs at Letter AI
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Business model
Stage
Series B
Total raised
$53.9M
Latest round
Series B · Feb 2026
Latest amount
$40M
Leadership
Founder & CEO
Co-Founder & CTO
Vice President, Marketing
Founding Account Executive
Founding Solutions Engineer
Stella Rafaelidys
Founding Product Manager
Rahul Awasty
Founding Product Designer
Founding Account Executive
Investors
Customer-obsessed, direct yet kind, ambitious yet humble; the company emphasizes fast iteration, strong responsiveness, and a hands-on team culture.
Work style
Hybrid
Visa sponsorship
Limited
Compensation
Public role signal for a Founding Engineer (Frontend): $100K-$150K salary plus 0.25%-1.50% equity; company-wide compensation bands are not publicly disclosed.
Benefits
Pricing
Sales-led custom quote / enterprise subscription
Differentiators
Technology
Customers
Competitors
Estimated revenue
$25M-$50M
Estimated monthly visits
38.5K
Traffic estimate as of Jun 2026
PR Newswire · Feb 2026
Letter AI announced a $40M Series B led by Battery Ventures, with participation from Y Combinator, Lightbank, Northwestern Mutual Future Ventures, Stage 2 Capital, and existing investors; the company also launched Letter Compass and cited enterprise customers including Lenovo, Adobe, Novo Nordisk, Plaid, Zip, RingCentral, Kong, and SolarWinds.
Letter AI blog · Oct 2025
Letter AI announced a $10.6M Series A led by Stage 2 Capital, highlighted 15x customer-base growth, and described its move toward proactive, personalized, high-velocity revenue enablement.
Lenovo StoryHub · Jul 2025
Lenovo described how it partnered with Letter AI to build an AI-powered revenue enablement platform for its Digital Workplace Solutions motion, including content personalization, AI coaching, AI sales rooms, and automated RFP response workflows.
Letter AI case study
Letter AI’s case study says Phenom migrated thousands of assets and hundreds of sales rooms and shortened enterprise deal cycles by 23.7% after adopting an AI-native sales motion.