Chalk Raises $50M Series A to Power AI Inference

Marc Freed-Finnegan - Co-Founder & CEO
by Marc Freed-Finnegan
May 28, 2025

I'm incredibly excited to share that Chalk has raised a $50 million Series A at a $500 million valuation, led by Felicis, with participation from Triatomic Capital and our existing investors General Catalyst, Unusual Ventures, and Xfund. We’re especially thrilled to have Aydin Senkut from Felicis joining our board. This funding marks a huge milestone and a powerful validation of our vision for real-time AI infrastructure.

Reflecting on Our Journey

When we started Chalk, we knew real-time inference was critical for fintech. Over the years, we've discovered that its importance extends far beyond fintech—to identity verification, fraud prevention, healthcare, and e-commerce.

We've experienced remarkable growth—not just financially, but in the deep trust customers place in us to support their most critical applications. Companies like Doppel, Sunrun, Whatnot, Socure, Found, Medely, and iwoca rely on Chalk daily, continuously expanding their use cases. For instance, Doppel uses Chalk to rapidly detect threats in real-time, significantly enhancing security without compromising performance. Witnessing such customer-driven innovation has been incredibly rewarding.

Looking Ahead

AI compute is shifting rapidly from training to real-time inference, creating new demands for fresh data and complex computations at the exact moment decisions are made. Existing solutions have enabled large, complex training workflows and feature stores (low-latency caches of pre-processed data), but real-time inference remains underserved.

Chalk uniquely addresses this critical gap by providing infrastructure designed explicitly for instantaneous, intelligent decisions. Our mission remains clear: to deliver intuitive, powerful data infrastructure that integrates seamlessly with developers' favorite tools.

As applications involving large language models (LLMs) grow increasingly complex, our platform evolves to handle sophisticated data interactions more effectively. This Series A funding significantly accelerates our ability to build a fully general compute framework, enhancing integration and usability, allowing developers to effortlessly create transformative real-time AI applications.

Our Team

At Chalk, we hire exceptional people who strive to be among the very best in their fields. Exceptional software craftsmanship is our language—how we communicate our vision to the world. Our team shares a deep commitment to excellence, continuously challenging themselves to grow and to help build Chalk into one of the world's leading software companies.

Elliot, Andy, and I bring extensive experience from Affirm, Palantir, Haven (acquired by Credit Karma), Google, and Index (acquired by Stripe), tackling large-scale data infrastructure challenges. Our shared journey has deeply influenced Chalk’s principles and continues to drive our growth.

We’re rapidly expanding our teams in San Francisco and New York. If you're inspired by the future of AI infrastructure, check out our open roles here.

Thank You

Finally, a huge thank you to our incredible team, visionary customers, dedicated partners, and supportive investors. We’re grateful for your continued trust and collaboration.

Here's to building an exciting future together!

Build ML Features faster with Chalk

See what Chalk can do for your team