Callosum

“Callosum ($100M seed for AI workload routing software)”

“Callosum raised a $100M seed round — a figure that would have been a large Series B just a few years ago. This signals that the seed stage is being redefined for capital-intensive infrastructure startups.”

“The largest checks this week went to companies solving specific, identifiable constraints to AI scaling — chip efficiency, workload routing, GPU utilization, and energy supply — rather than companies building novel AI applications.”