Parallel has raised $100 million in its Series A round at a $740 million valuation, co-led by Kleiner Perkins and Index Ventures, with participation from Spark Capital and continued support from existing investors including Khosla Ventures, First Round Capital, and Terrain. The round brings together top-tier backers supporting Parallel’s mission of building web infrastructure for AI agents. With this funding, Parallel plans to expand its APIs, enhance developer tools, and ensure open access for AI systems while incentivizing publishers to maintain the open web ecosystem.