Latest / The AI Practitioner Brief

OpenAI's Monitoring Gaps, $1.25T Round, and PHP's Patch — October 23, 2026
Two outside safety teams found three separate ways to beat OpenAI's own agent monitoring system. OpenAI is also finalizing a funding round that values it at $1.25 trillion. Same week, wildly different budgets. We go through the two critical PHP bugs one unpaid volunteer just patched, what AI token prices and caching really do to a company's bill, and why Google quietly scrapped Gemini 3.5 Pro.
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.