Inferact, an AI infrastructure startup, has secured $150 million in Seed funding at an $800 million valuation.
Investors
The round was co-led by Andreessen Horowitz and Lightspeed Venture Partners, with participation from Sequoia Capital, Altimeter Capital, Redpoint Ventures, and ZhenFund.
Andreessen Horowitz (a16z) is a venture capital firm that backs bold entrepreneurs shaping the future through technology. Founded in 2009, the firm manages multiple funds across stages, sectors, and geographies, with over $46 billion in committed capital. a16z invests in seed- to growth-stage companies across AI, bio + healthcare, consumer, crypto, enterprise, fintech, gaming, infrastructure, and companies building toward American dynamism.
Lightspeed Venture Partners is a global, multi-stage venture capital firm that manages over $40 billion in assets under management (AUM). With a physical presence in the U.S., Europe, India, Israel, and Southeast Asia, the firm has backed more than 1,000 companies. Lightspeed focuses on accelerating disruptive innovations in the enterprise, consumer, health, and fintech sectors.
Inferact Use of Funds
The company will use the funding to commercialize vLLM, scale its platform for enterprise AI inference, and expand adoption among both existing and new customers.
About Inferact
Led by CEO Simon Mo, Inferact is an AI company formed by the creators of open-source software vLLM, an open-source LLM (Large Language Model) inference engine. The company focus on bridging the gap between increasingly large and complex models and the systems that serve them, supporting a wide range of model architectures and hardware accelerators. Founded in 2025, Inferact's mission is to grow vLLM as the world's AI inference engine and accelerate AI progress by making inference cheaper and faster.
Funding Details
Company: Inferact
Raised: $150.0M
Round: Seed
Funding Date: January 2026
Lead Investors: Andreessen Horowitz, Lightspeed Venture Partners
Additional Investors: Sequoia Capital, Altimeter Capital, Redpoint Ventures, and ZhenFund
Company Website: https://inferact.ai/
Software Category: AI / Machine Learning Inference
Source: https://techcrunch.com/2026/01/22/inference-startup-inferact-lands-150m-to-commercialize-vllm/