Rillet

Sequoia led a $25 million Series A, and Andreessen Horowitz and ICONIQ followed with a $70 million Series B — more than $100 million in less than a year. Rillet is an AI-native ERP, built by accountants, explicitly targeting businesses scaling past QuickBooks or modernizing from NetSuite. Their pitch is a "zero-day close" — closing the books in hours rather than weeks. They are already on 400+ customers, including public companies above $1B in ARR. Watch the Fox Business segment.

Campfire

$100 million raised in 12 weeks — a $35 million Series A followed by a $65 million Series B co-led by Accel and Ribbit. AI-native ERP for venture-backed finance teams. Customers include Replit, PostHog, Decagon, and LimaOne. Campfire's internal model — the Large Accounting Model — claims 95%+ accuracy on reconciliations, variance analysis, and other core accounting tasks. Watch the Campfire feature.

The pattern matters more than either company.

Sequoia, Andreessen Horowitz, ICONIQ, Accel, and Ribbit have all underwritten the same thesis in the same quarter — that AI-native ERP replaces the existing accounting stack. The Rillet segment ran on Fox Business with a Sequoia partner. This is no longer a tech-press story; it is breaking into the channels your clients already read.

My honest read: every CPA firm needs to start adopting AI now, not next year. The firms that wait will be the ones doing the catching up. Small and mid-sized firms have always had the hardest time investing in new capability — the risk feels disproportionate to the budget, and the urgency feels deferrable until it isn't.

I am an engineer who has run operating businesses for forty years and spent the last twelve months specifically studying how AI is being applied inside professional-services firms. Spring Street AI is the advisory practice I have built for LA-area CPA firms — small, focused, engagements by referral and direct introduction. I am bringing on a handful of firms over the next six months.

— Sam Chowdhry, Spring Street AI

If this is on your radar

Would 20 minutes be useful?

If you run or lead a CPA firm in Los Angeles and you are thinking about what these shifts mean for your practice — partner economics, capacity, client expectations — I would value a short conversation. No deck, no pitch. A peer-to-peer call between two people who think about the profession seriously.

Email Sam →