Sierra Ventures

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A team of former entrepreneurs and operators at Sierra Ventures are dedicated to helping founders succeed.

Sierra Ventures is an early-stage venture capital firm investing in AI Infrastructure, Vertical AI, Physical AI, and DeepTech. For over two decades, it has run a CXO Advisory Board connecting its founders to the enterprise.

Sierra Ventures backs founders from inception in AI & Deep Tech.

Smallest.ai raises $13 million in a Series A round to develop voice AI designed to make conversations with agents sound human. Its specialized model listens, thinks, and speaks simultaneously to reduce response lag, and hands queries to a large foundational model when they fall outside its knowledge base. Existing customers include RingCentral and Truecaller, and the company focuses on real-time conversational voice agents for enterprise customers.

Jul 2026 · TechCrunchNews article

ArmorCode, a cybersecurity platform, raises $40 million in a Series B round led by HighlandX. The platform gathers vulnerability data from connected applications and software infrastructure, consolidates it in one place, and standardizes it for analysis; NGP Capital, Ballistic Ventures, Sierra Ventures, and Cervin also participate.

Dec 2023 · TechCrunchNews article

Pantomath, a Cincinnati-based data observability and traceability platform, raises $14 million in a Series A round led by Sierra Ventures, with participation from Bowery Capital and Epic Ventures. Founder and CEO Somesh Saxena says the company will use the capital to expand its platform and workforce; the article’s description of its specific focus is truncated.

Oct 2023 · TechCrunchNews article