Harmonic has raised $295 million across multiple rounds, including a $100M Series B at a $900M valuation, followed by a $120M Series C/D/E round led by Ribbit Capital with participation from Sequoia Capital, Kleiner Perkins, and Index Ventures. Its $75M Series A was led by Sequoia Capital with support from Index Ventures, DST Global Partners, Era Funds, and Nikesh Arora. The funding accelerates the development of Aristotle, Harmonic’s flagship MSI-based model designed for mathematically verified reasoning, safety-critical decision-making, and error-free software generation.