Fireworks AI is in discussions to raise a new funding round at a $15 billion valuation, according to Bloomberg. If the deal closes at that number, it would represent a nearly fourfold increase from the company’s $4 billion valuation set during its Series C round in October 2025.
From $552 million to $15 billion in about a year
The Redwood City, California-based company raised $52 million in a Series B back in July 2024, which valued it at $552 million. Just over a year later, the October 2025 Series C brought in $250 million at a $4 billion valuation. That round was co-led by Lightspeed Venture Partners, Index Ventures, and Evantic Capital, with Sequoia Capital also participating.
Total funding raised to date sits at over $327 million.
Founded in 2022, Fireworks AI built its business around providing high-efficiency inference for open-source large language models and other generative AI applications. CEO and co-founder Lin Qiao, a former Meta engineer, has steered the company toward enterprise-grade AI inference, model optimization, and deployment.
