AI-Focused SignalFire Raises Over $1 Billion

SignalFire has closed on more than $1 billion in new capital that will be invested across the firm’s seed, early, executive-in-residence (XIR), and opportunities funds, with a continued focus on supporting founders building applied AI startups.

Headquartered in San Francisco, SignalFire was founded in 2013 and was built from the start with artificial intelligence at its core. The firm has backed companies such as Grow Therapy, a mental health platform connecting patients with licensed therapists; EvenUp, an AI software provider helping personal injury lawyers draft legal documents; Grammarly, a writing assistant that uses AI to improve communication; Stampli, a platform streamlining accounts payable workflows; and Horizon3.ai, a cybersecurity company offering automated penetration testing.

SignalFire’s in-house platform, Beacon AI, tracks data on more than 650 million people and 80 million organizations to spot hiring trends, market changes, and promising startups. This technology helps SignalFire actively support its portfolio companies with hiring, data strategy, and business growth from the earliest funding stages through Series B.

“Our investors see what we see — applied AI is the defining opportunity of our time. With this new capital, we’re doubling down on the next generation of category-defining AI startups tackling the world’s biggest challenges,” said Chris Farmer, the founder and CEO of SignalFire. “Backed by our proprietary AI platform and deep operational expertise, we equip founders with the tools, data, and support they need to scale breakthrough companies faster.”

“From customer intros and fundraising advice to hands-on support across data science, hiring, and scaling, SignalFire’s impact goes far beyond capital. They’ve been a true force multiplier for our growth,” said Jake Cooper, the CEO and co-founder of Grow Therapy.

“AI’s next frontier isn’t invention, it’s implementation. With these funds, we’ll continue to back founders who transform theoretical AI technology into market-changing solutions,” said Wayne Hu, a partner at SignalFire. “With SignalFire’s engineering DNA and proprietary data platform, we’re uniquely positioned to identify and accelerate companies that aren’t just building technology but reshaping industries and outcomes.”

With the close of the new fund, SignalFire now has total assets under management of $3 billion.