The Week's Biggest Rounds Were Agent Plumbing, Not Agent Apps: Temporal $550M, Ridgeline $250M, Factory $200M, Profound $180M
Crunchbase News' September 18 roundup puts Temporal Technologies at the top with a $550M Series E led by Lightspeed with Wellington, Goldman Sachs Alternatives and Tiger Global, explicitly for an open source platform for building and operating long-running AI agents. Below it, three of the top ten are AI-native replacements for established software categories: Ridgeline at $250M Series E for investment management, Factory at $200M for enterprise software development, and Profound at $180M Series D for AI search visibility. The pattern worth noting is that the largest check of the week went to durable execution infrastructure rather than to any vertical agent product, which is where the money goes when everyone building agents hits the same reliability wall.
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