Latest / The AI Practitioner Brief

Anthropic's Loss, DeepSeek's Profit, and Meta's Cluster — October 21, 2026
Anthropic's leaked IPO paperwork shows an eighty billion dollar loss in six months. DeepSeek says its own inference system already makes thirty-eight dollars an hour per chip. Same industry, wildly different math. We go through the accounting behind that loss, the cache trick behind DeepSeek's number, Meta's million-chip supercluster, and the week's other news, from a PyTorch on TPU project to a PHP patch everyone needs now.
Get full access to The AI Practitioner at aipractitioner.substack.com/subscribe
The skinny
The skinny isn't ready yet — notes appear once the transcript is processed.