SignalFire is a venture capital firm based in San Francisco, California, founded in 2013. With approximately $3 billion in assets under management, the firm specializes in seed-stage investments and also participates in Series A and B funding rounds. SignalFire focuses on sectors such as artificial intelligence, developer tools, B2B SaaS, healthcare, cybersecurity, and consumer industries.

The firm is known for its innovative use of data and artificial intelligence through its proprietary platform, Beacon, which tracks over 600 million employees and 80 million companies. This technology enables SignalFire to source, evaluate, and support startups effectively. The company emphasizes building long-term relationships with founders and provides extensive support beyond capital, including access to in-house recruiters, data scientists, and industry experts.

Led by founder and CEO Chris Farmer, SignalFire's engineering team plays a crucial role in developing AI-powered tools that enhance the investment process. The firm has a notable portfolio that includes companies like Grammarly and Frame.io, and it has recently raised over $1 billion to further its commitment to early-stage AI-focused investments.