Fireworks AI, a rapidly growing inference cloud platform that powers large-scale AI applications for global enterprises, has secured $250 million in Series C funding, valuing the company at $4 billion. The round was co-led by Lightspeed Venture Partners, Index Ventures, and Evantic, with additional participation from existing backer Sequoia Capital.
The new capital marks a significant milestone for Fireworks AI, strengthening its position in the highly competitive enterprise AI infrastructure market. The company enables organizations to build, customize, and deploy open AI systems that run efficiently at scale while giving customers complete control over their data, workflows, and model configurations.
Since its inception, Fireworks AI has focused on creating a developer-friendly ecosystem for enterprise AI adoption, helping companies integrate generative AI capabilities directly into their operations. Its platform offers low-latency inference, model orchestration, and fine-tuning tools optimized for large language models and multimodal applications. By supporting open architectures, Fireworks AI enables clients to choose from a range of models—both proprietary and open source—without being locked into a single provider.
The Series C funding will primarily be used to expand Fireworks AI’s cloud infrastructure, accelerate product innovation, and grow its enterprise customer base across sectors such as finance, healthcare, retail, and technology. The company also plans to scale its global engineering and research teams to further enhance performance, reliability, and customization across its growing portfolio of enterprise deployments.
Fireworks AI’s CEO said the investment reflects a growing demand for flexible, open AI infrastructure solutions that empower businesses to innovate without compromising data ownership or compliance. The company aims to bridge the gap between open-source development and enterprise-grade scalability, enabling organizations to safely and efficiently run AI applications in production environments.
The latest funding round follows a year of rapid growth in enterprise adoption of Fireworks AI’s platform. The company has been increasingly positioned as a trusted partner for organizations seeking to transition from experimental AI pilots to full-scale deployment. With a $4 billion valuation, Fireworks AI joins a small group of high-growth infrastructure firms defining the next phase of enterprise AI compute and inference.
By combining open AI flexibility with enterprise-grade security and performance, Fireworks AI is setting a new standard for scalable, customizable AI deployment across industries.
KEY QUOTES
“Our mission is to enable every business to achieve automated product and model co-design to reach maximum quality, speed, and cost-efficiency using generative AI.”
Lin Qiao, CEO and Co-founder, Fireworks AI
“Fireworks enabled us to own our AI journey, and unlock better quality in just four weeks. This resulted in a better user experience for our customers.”
Kay Zhu, Co-founder and CTO, Genspark
