Tenacity turns belief into velocity.
3.17.2025
On Building AI Companies That Endure — AJ on 20VC
.jpg)
OUR COMPANIES
Our companies are shaping the future of enterprise intelligence.
Eudia
Augmented intelligence platform for legal teams.
Omar Haroun, Ashish Agrawal, David Van Reyk
Fyxer.ai
AI executive assistants for everyone.
Richard Hollingsworth, Archie Hollingsworth, Matt Ffrench
Rox
Agents for revenue generation.
Ishan Mukherjee, Diogo Ribeiro, Shriram Sridharan, Christopher Ré
Subsets
AI-driven A/B experimentation for subscriptions.
Martin Johnsen, Nikolai Skelbo Neldeberg, Oliver Brandt
Synthflow
Voice AI agents for automated phone calls.
Albert Astabatsyan, Hakob Astabatsyan, Sassun Mirzakhan-Saky
Do you want to grow your career?
If you’re in GTM (or want to get into it) and know you can make an outsized impact, almost every company is hiring, We’d love to meet you, champion you, and help you win. Our Tenacity talent approach invests in you for the long term. Ask anyone we’ve worked with. Let’s connect!
Our Thesis
In today’s AI world, it’s never been easier to build a good product.
But history has shown that failed GTM execution is a company killer.
founder-led sales
Scalable GTM
We invest at the inflection point when product-market fit is emerging and when clarity, system architecting, and traction matter most. We back AI-native, visionary founders who know that the GTM growth engine matters as much as the product. We back founders who bring both tenacity and joy to how they build.
About us
An early sales leader at Facebook, Slack, and Glean, AJ Tennant started Tenacity Capital to take his lessons from building at the ground floor to investing.
As a founding member of Facebook’s inside sales organization, AJ helped scale revenue beyond $100M in the first year, supported the expansion and build-out of the Austin office, and played a pivotal role in the company’s growth toward $1B+.
As Slack’s first sales leader, AJ scaled GTM globally from ~$6M to $100M+ ARR, then built the enterprise outbound motion and playbook for the Fortune 1000 that became the foundation for Slack’s DPO and $1B+ in ARR.
As Glean’s GTM leader, AJ scaled the company from ~$4M to $100M+ ARR, building a 400-person revenue engine that established product-market fit and positioned Glean as an enterprise AI powerhouse.
How We partner
We’re not a tourist check.
We’re a true GTM partner for the scale
journey ahead.
Design & Talent Partner
We are your first call on tough GTM decisions, whether it's building teams, aligning sales and product, or sharpening GTM focus. We’ve helped companies we backed navigate organization restructures, hiring decisions, and channel selling strategy.
Advisory Network
Bringing decades of industry experience and a deep network to match, we provide access to experienced CROs and sales leaders who can advise on how to build, hire, and scale startup sales organizations.
Customer Introductions
With decades of collective experience across industries, we’ve cultivated deep relationships that open doors to the right customers at the right time. Our network allows portfolio companies to bypass cold outreach and connect directly with decision-makers who accelerate growth.
News
Get the latest updates on press releases and other announcements.
11.20.2025
Accel Welcomes AJ as their Newest Venture Partner
9.25.2025
Factory Raises $12M to Accelerate Autonomous Software Development
.jpeg)
7.21.2025
Backing Bold AI Founders — AJ in Conversation with Oddbird VC
3.17.2025
On Building AI Companies That Endure — AJ on 20VC
Let’s build together.
We’re a true GTM partner for the scale journey ahead.
Business inquiries
For founders and LPs
We partner with exceptional founders at the earliest stages and work alongside LPs who believe in backing the next generation of category-defining companies. If you're building something ambitious, we want to hear from you.
Careers
For tenacious talent
Our portfolio companies are building breakthrough AI products and looking for exceptional talent. If you're ready to join a high-growth startup and supercharge your career, we'd love to make an introduction.