What Top VCs See in the AI Growth Stack (And What They're Betting On Next)

What Top VCs See in the AI Growth Stack (And What They're Betting On Next)

At INBOUND 2025, HubSpot Ventures managing director Adam Coccari brought three of Silicon Valley's most active AI investors together on the Main Stage: Jennifer Li of Andreessen Horowitz, Josh Coyne of Kleiner Perkins, and Sonya Huang of Sequoia Capital

These three have collectively backed some of the most-watched AI companies in the market right now, and their portfolios are where real AI GTM strategy is getting stress-tested at scale. What they shared was a read on what's actually working, what's still broken, and where most companies are leaving value on the table.


AI Agents Can Already Outperform Humans in the Right Context

Whether AI will fully automate go-to-market functions is a question most marketers treat as theoretical. It isn't. In some sales contexts, AI agents are doing more than just keeping pace with humans—they're doing better. 

Sonya Huang cited a live example from a portfolio company reference call: an AI agent was consistently coming back with better results than human reps had managed on the same accounts.

"There was a reference call today for a logistics agent company, and one of the most surprising things was they were finding that when they put an AI agent on the phone to call customers, it can negotiate better rates, better margins than a human can." — Sonya Huang, Sequoia Capital
Jennifer Li countered that for complex B2B deals, go-to-market is fundamentally a trust-building exercise. Customers want a partner, not a transaction. Josh Coyne landed between them. AI will carry the operational load, humans stay in the loop for high-stakes relationships. 

The more important point: the line between "automatable" and "human-required" is moving faster than most GTM teams are adjusting for. 

Do this: Map your GTM motions by automation readiness. Ask where the cost of human involvement outweighs the trust risk of handing it to an agent. 


The Reasoning Era Changes What "AI Agent" Even Means

A year before this session, Sonya Huang published Sequoia's agentic reasoning thesis, arguing that AI was entering a new phase defined by actual reasoning at inference time. That thesis has held up. Her framing draws a clear line between two eras: "thinking fast" AI, pre-trained on internet-scale data and responding in the snap of a finger, versus "thinking slow" AI, which spends compute actually reasoning through a problem before it gives you an answer. That transition, she argued, is the next scaling law and we're still in its early innings.

Agents aren't autocomplete tools anymore. They can handle multi-hop problems, work through ambiguity, and complete tasks that would have required a specialist twelve months ago. But capability alone doesn't determine outcomes. How you scope the agent does.

"As long as you scope these agents correctly, you give them the right tools, you give them the right goals, you give them the right environments to run around in, in my opinion, there is no ceiling," Huang added

The ceiling comes when you ask it to do too much at once. 

Do this: Before deploying any agent, define the exact task, the success criteria, and the tools it has access to. Treat it like onboarding a new hire who needs context.


How to Pick Your First AI Use Case

The instinct for most teams when starting with AI is to reach for the most impressive use case available. That's usually the wrong move. A more durable approach starts with a simple filter: is the cost of doing this manually meaningful, and is the failure mode survivable if the AI gets it wrong? If both answers are yes, the next question is whether you have a clear enough success metric to know fast whether it's working. Without that signal, you can't iterate, and iteration is the whole game.

Companies that move carefully on use case selection tend to scale faster because they don't spend months debugging agents that were set up to fail.

Concrete examples worth testing: 

  • personalizing sales collateral at volume
  • giving customer support reps an AI copilot to cut ticket resolution times
  • qualifying inbound leads through voice or chat agents

These are meaningful, measurable, and survivable if imperfect. Coyne also cautioned against stringing too many autonomous agents together too early. Why? Compounding errors erode user trust fast, and that's hard to recover from.

Do this: Before committing to any AI use case, ask two questions first. Is there real cost to automate, and is the failure mode survivable? If both check out, define a single, clean metric that tells you whether it's working before you build anything. 

Generative Content Is Already Doing Real Work

AI-generated content—voice agents, video avatars, personalized outreach—isn't a test case anymore. Portfolio companies across these firms have moved past pilots and are running generative content as core GTM, at scale, with the kind of results that make it hard to argue for doing it any other way.

ElevenLabs is using its own voice model to qualify inbound SDR leads at scale, across multiple languages and handling the qualification workload that would otherwise require a team of reps. Synthesia avatars have delivered corporate earnings calls, front-line worker communications, and interactive website experiences that route visitors through a lead funnel. Personalized AI video is opening sales sequences. The common thread across all of it: audiences aren't filtering for whether something was AI-generated. They're filtering for whether it's relevant and useful.

"Humans don't care if something is AI generated or not, in my opinion. As long as the video resonates, it will work." — Josh Coyne, Kleiner Perkins
Do this: Identify one content format your team produces manually and at high volume — onboarding walkthroughs, prospecting videos, support explainers — and run an AI-generated pilot this quarter. Measure completion and conversion rates, not just production time saved.



What the Next Generation of AI Companies Actually Looks Like

The question of what separates breakout AI companies from the rest has a clearer answer than most investors expected. It's not model access—everyone has that. It's not funding, pedigree, or technical depth alone. What Jennifer Li is seeing across the a16z portfolio is a pattern: the companies winning are the ones adapting fastest, running the most experiments, and investing seriously in how they tell their story.

To Sonya Huang, this is "the era that goes to the builders, to the people with high agency." Not the most technically sophisticated teams, the ones who take the same API access everyone has and actually do something with it, fast. 

The next hundred-million-ARR AI company probably doesn't look like the last generation of SaaS. It's smaller, it's moving faster, and its GTM is run by people who treat experimentation as a core discipline.


The Takeaways

The technology is already ahead of most companies' ability to use it well. The gap between teams running fast, closed-loop AI experiments and teams still in planning mode is compounding and it's getting harder to close from behind.

What all three investors agreed on: the next generation of breakout AI companies won't be defined by stack sophistication. They'll be defined by speed of adaptation, quality of storytelling, and the discipline to run small experiments, measure them honestly, and move. That describes a new kind of GTM operator, one who treats AI as infrastructure.

Want access to more sessions and content like this? Join us in Boston this September.
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