AI agents · How Founders Use AI
Is there a real startup opportunity in building vertical AI agents?
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.
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Go deeper19 sources
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Vertical AI Agents Could Be 10X Bigger Than SaaS
Y Combinator Lightcone (Garry Tan, Jared Friedman, Harj Taggar, Diana Hu) · Video · Nov 2024
The episode that defined the category thesis; 300 potential billion-dollar companies.
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Why Vertical LLM Agents Are The New $1 Billion SaaS Opportunities
Y Combinator · Video · 2024
The earlier YC talk with the playbook for picking your vertical.
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Building Vertical AI: An early stage playbook for founders
Bessemer Venture Partners · Guide · 2025
A VC's operating manual for going from wedge to platform in a vertical.
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Building Vertical AI (full book, PDF)
Bessemer Venture Partners · Guide · Jan 2026
The expanded book with revenue benchmarks from Harvey, EvenUp and peers.
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The State of AI 2025
Bessemer Venture Partners · Article · 2025
Market sizing: services are 10x the software market, and agents tap them.
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Good news: AI Will Eat Application Software
a16z · Article · 2024
The macro argument for why agents expand rather than shrink the market.
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Big Ideas in Tech for 2025
a16z · Article · Dec 2024
Where a16z partners saw agent openings across industries.
All 19 sources
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No Priors Ep. 82: Bret Taylor on company-branded agents
No Priors (Bret Taylor) · Podcast · 2024
Sierra's founder on agents as the new front door for every brand.
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Vertical AI Agents | Bret Taylor on Perspectives
Pigment Perspectives (Bret Taylor) · Podcast · 2025
Why enterprise software's future belongs to vertical agents, per its loudest champion.
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An Interview with Bret Taylor About AI Agents and Tech History Lessons
Stratechery (Ben Thompson) · Article · Jun 2025
Puts the agent wave in the context of past platform shifts.
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Bret Taylor on Lenny's Podcast
Lenny's Podcast (Bret Taylor) · Podcast · Jul 2025
From Google Maps to Sierra: how he evaluates the agent opportunity.
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35 startup ideas to start in 2025 (SaaS, AI agents)
Greg Isenberg · Thread · Jan 2025
Concrete, priced agent ideas you could start validating this week.
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30 startup ideas to build in 2025 (AI agents, SaaS, tools)
Greg Isenberg · Thread · Jan 2025
A second batch of buildable agent wedges with revenue models attached.
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Decagon Business Breakdown & Founding Story
Contrary Research · Article · 2025
A full teardown of how one vertical agent company reached $1.5B+.
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Decagon, Sierra and the Race to Build Customer Support Agents
Upstarts Media · Article · 2025
The competitive dynamics of the hottest vertical, told through two rivals.
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Jesse Zhang on sales battles, AI wrapper revenge, and making agents work
Upstarts Media (Jesse Zhang) · Podcast · 2025
The unvarnished go-to-market grind behind a vertical agent startup.
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Toma's AI voice agents have taken off at car dealerships
TechCrunch · Article · Jun 2025
Proof that boring niches (dealership phone calls) make great agent businesses.
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Hi, AI: Our Thesis on AI Voice Agents
a16z · Article · 2024
The voice-agent market map, a whole sub-category of vertical opportunity.
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How India's Tech Landscape Got an Agentic AI Makeover in 2025
Inc42 · Article · Dec 2025
The India-specific map of agentic startups, funding and open gaps.