Analysis
Pulse tracked roughly $18.8 billion moving into AI physical infrastructure this week across three deals: Valar Atomics' $1 billion nuclear-reactor raise, Base Power's $1 billion grid-battery round, and Tesla and SpaceX's $16.8 billion first-phase Terafab chip plant, as detailed in Pulse's earlier tally. Lumilens' emergence from stealth with more than $700 million in new funding -- covered separately in today's lead story -- adds a fourth category to that list: optical networking, the interconnects that move data between the chips the other three deals are trying to build, power and manufacture.
Add Lumilens in and the week's physical-AI-infrastructure tally moves to roughly $19.5 billion, none of it going to a foundation-model lab, and now spanning four distinct sub-layers of the stack: energy generation (Valar Atomics), grid storage (Base Power), chip fabrication (Terafab) and chip-to-chip networking (Lumilens). That's a more complete picture of where infrastructure capital is actually landing than any single deal suggests on its own -- the AI buildout isn't one bottleneck getting funded, it's at least four simultaneously.
“What changed since Pulse's original tally isn't just the dollar figure.”
What changed since Pulse's original tally isn't just the dollar figure. It's confirmation that investors are willing to underwrite the full physical stack beneath AI compute, not just the most headline-grabbing piece of it -- networking and power are getting the same scale of check as manufacturing, even though they get a fraction of the press coverage chip fabs do.