The episode that defined the category thesis; 300 potential billion-dollar companies.
Vertical AI Agents Could Be 10X Bigger Than SaaS
Y Combinator Lightcone (Garry Tan, Jared Friedman, Harj Taggar, Diana Hu) Nov 2024
Open ycombinator.com →Yes, and it may be the biggest one of this cycle: YC's partners argue vertical AI agents could be 10x bigger than SaaS because they tap labor budgets, not software budgets; you sell completed work, not seats. The winners (Harvey in legal, Sierra and Decagon in support, EvenUp in personal injury, Abridge in healthcare) pick one painful workflow in one industry and own the outcome end to end. The edge goes to founders who deeply know a niche's workflow, including unglamorous Indian and SMB verticals nobody in San Francisco understands.
19 resources.
The episode that defined the category thesis; 300 potential billion-dollar companies.
Y Combinator Lightcone (Garry Tan, Jared Friedman, Harj Taggar, Diana Hu) Nov 2024
Open ycombinator.com →The earlier YC talk with the playbook for picking your vertical.
Y Combinator 2024
Open ycombinator.com →Sierra's founder on agents as the new front door for every brand.
No Priors (Bret Taylor) 2024
Open sierra.ai →Why enterprise software's future belongs to vertical agents, per its loudest champion.
Pigment Perspectives (Bret Taylor) 2025
Open pigment.com →From Google Maps to Sierra: how he evaluates the agent opportunity.
Lenny's Podcast (Bret Taylor) Jul 2025
Open sierra.ai →The unvarnished go-to-market grind behind a vertical agent startup.
Upstarts Media (Jesse Zhang) 2025
Open upstartsmedia.com →A VC's operating manual for going from wedge to platform in a vertical.
Bessemer Venture Partners 2025
Open bvp.com →The expanded book with revenue benchmarks from Harvey, EvenUp and peers.
Bessemer Venture Partners Jan 2026
Open bvp.com →Market sizing: services are 10x the software market, and agents tap them.
Bessemer Venture Partners 2025
Open bvp.com →The macro argument for why agents expand rather than shrink the market.
a16z 2024
Open a16z.com →Where a16z partners saw agent openings across industries.
a16z Dec 2024
Open a16z.com →Puts the agent wave in the context of past platform shifts.
Stratechery (Ben Thompson) Jun 2025
Open stratechery.com →Concrete, priced agent ideas you could start validating this week.
Greg Isenberg Jan 2025
Open x.com →A second batch of buildable agent wedges with revenue models attached.
Greg Isenberg Jan 2025
Open x.com →A full teardown of how one vertical agent company reached $1.5B+.
Contrary Research 2025
Open research.contrary.com →The competitive dynamics of the hottest vertical, told through two rivals.
Upstarts Media 2025
Open upstartsmedia.com →Proof that boring niches (dealership phone calls) make great agent businesses.
TechCrunch Jun 2025
Open techcrunch.com →The voice-agent market map, a whole sub-category of vertical opportunity.
a16z 2024
Open a16z.com →The India-specific map of agentic startups, funding and open gaps.
Inc42 Dec 2025
Open inc42.com →The same ground, over in Build the product, our Starting Up track.