Sail Research has secured $80 million in funding at a $450 million valuation, with Kleiner Perkins leading the Series A round and Sequoia Capital leading the Seed round. The company is developing specialized inference infrastructure designed for long-horizon AI agents and offers a per-active-time sandbox for agent runtimes. Early customers include Parallel, Detail.dev, and Jack and Jill. AI
IMPACT This funding will accelerate the development of specialized inference infrastructure for AI agents, potentially improving their efficiency and capabilities.
RANK_REASON Significant funding round for an AI infrastructure startup. [lever_c_demoted from significant: ic=1 ai=0.7]
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