Omen AI raises $31m to watch the water inside AI data centres

The unglamorous truth about the AI boom is that some of its hardest problems are plumbing. As data centres pack more GPUs into every rack and run them hotter, the fluid that keeps the chips from cooking has started, occasionally, to grow bacteria.

That is the problem Omen AI has built a company around, and on 29 June it said it had raised a $31m Series A to chase it. The round was led by Nava Ventures, with CRV, Vanderbilt University, Mann+Hummel, Starhill Holdings, and Hard Launch Capital taking part, alongside personal cheques from executives at Bridgestone, GM, Johnson Controls, and Tensorwave.

The mechanics are oddly specific. Liquid-cooled chips run on a mix of water and an additive that suppresses bacteria. To push the chips harder, operators can dial up the water, which absorbs heat better, but a wetter mix invites contamination that clogs the flow.

The fix, once it...

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