Author
Tejas Patil
Founding Member, gAI Ventures · San Francisco · Bangalore
Tejas Patil is a founding member at gAI Ventures, a venture builder and fund based in San Francisco and Bangalore, focused on building and investing in hyper-verticalized AI companies.
He thrives in early chaos and takes bold bets. He likes to build products with built-in distribution, and teams that think in systems, move fast, and execute relentlessly.
Reach him at tejas@gai.ventures. He's fairly active on LinkedIn.
- 01
Founder-Market Fit
Founder-Market Fit: Why Domain Expertise Beats Code in 2026
When every founder can reach the same AI models, founder-market fit is the real differentiator. Here is what founder-market fit means, why deep domain expertise now beats raw engineering, and how an expert operator turns industry knowledge into a defensible AI company.
September 4, 2026 · 8 min read
- 02
Venture Building
From Idea to Funded Startup: What a Venture Builder Actually Does, Week by Week
A venture builder co-founds companies, not funds them. Here is the week-by-week reality of the model, from scouting expert operators through a 4-week validation sprint to first cheque and spinout, with the equity math and how it differs from an accelerator or VC.
September 4, 2026 · 9 min read
- 03
Vertical AI
What Is Vertical AI, and Why Does It Beat Horizontal AI in the Enterprise?
Vertical AI is software built for one industry's workflow, data, and rules. Here is why depth beats breadth in the enterprise, with 2026 market data, a clear comparison, and how domain-built companies earn a moat horizontal tools never see.
September 4, 2026 · 9 min read
- 04
Venture Builder
The -1 to 1 Playbook: From Industry Insight to AI Product-Market Fit
Most founders start building before they have validated anything. The -1 to 1 playbook runs the other way: validate the problem and buyer first, then build a narrow product to real users, then read the signals that show the wedge is working. Here is the phase-by-phase path to AI product-market fit.
September 4, 2026 · 8 min read
- 05
Venture Builder
Get a Team on Day Zero: Building Your Vertical AI Company With a Technical Venture Builder
A domain expert should never spend six months on a cofounder search before validating. Here is what getting a production-grade engineering team on day zero actually looks like, why it beats hiring or searching first, and how a technical venture builder co-founds a vertical AI company with you fro...
September 4, 2026 · 8 min read
- 06
Venture Builder
Top Technical Venture Builders for US Vertical AI Founders (2026)
A technical venture builder co-founds your company and brings a production-grade engineering team from day zero. Here are the criteria that separate a top technical venture builder from an accelerator or a check, how the model compares, and where gAI Ventures fits for US vertical AI founders.
September 4, 2026 · 8 min read
- 07
Venture Building
How gAI Ventures Co-Builds AI Products With Founders (While Others Just Write Checks)
Most AI venture studios talk about supporting startups. We ship production-ready AI products alongside founders, often within 90 days.
April 20, 2026 · 3 min read
- 08
Vertical AI
Where the Next Trillion Dollars in Enterprise AI Would Come From
Lessons from building and backing vertical AI companies over the past year, and why the next trillion in enterprise AI comes from domain-specific intelligence, not general-purpose models.
December 23, 2025 · 6 min read
- 09
Stella AI
Stella AI: From an AI Executive Assistant to the Productivity Layer for Modern Work
How Stella AI evolved from a WhatsApp-based AI assistant to a full-fledged inbox intelligence platform used by 1,000+ professionals, and what it reveals about building serious AI products.
December 12, 2025 · 5 min read
- 10
FastTrackr AI
FastTrackr AI, AI Stack For RIAs & Financial Advisors
The financial advisory industry manages $144 trillion in assets and loses 25%+ of advisor time to non-advisory work. Here's how FastTrackr AI is changing that.
December 9, 2025 · 7 min read
- 11
Vertical AI
Building What's Next in AI at gAI Ventures
Most venture firms wait for a finished product and place a bet. gAI Ventures does something different, partnering at the very beginning of a company's life as an institutional co-founder.
October 16, 2025 · 8 min read