AI Weekly: 4/1–4/10 | Anthropic Triple Shock Sequel — Mythos Too Dangerous to Ship, Revenue Passes OpenAI, Software Stocks Crash

One-line summary: Last week's leaks became this week's reality — and reality is more shocking than the rumors. This week's dual protagonists: If Anthropic defined this week's technical ceiling (Mythos was too powerful to release publicly), then OpenAI defined this week's capital ceiling ($122B in a single funding round). The two moves together shifted the 2026 AI race away from "whose model is strongest" and toward "who can lead simultaneously on governance, trust, and capital." 1. Top Story: Anthropic's Triple Shock — The Sequel Last week we reported on Anthropic's three-way shock: leaked IPO plans, the accidental Mythos disclosure, and the Claude Code source code exposure. This week, all three storylines got their sequel — and each one hit harder than the original leak. 1.1 Mythos Officially Debuts — But Anthropic Refuses to Ship It (4/7) Anthropic officially released the Mythos Preview through Project Glasswing — but this wasn't a normal model launch. It was the first time in AI his