The Week AI Changed Everything: GPT-5, Llama 4, and the New Reality
Two landmark model releases, a regulatory turning point, and what it all means for your business
April 13, 2026
Editor's Note
This was one of those weeks we'll look back on. GPT-5 and Llama 4 both dropped within 24 hours of each other — one raising the frontier ceiling, one obliterating the argument for closed-source-only AI. Read both carefully. The business implications are significant.
This Week in AI
The AI race intensified dramatically this week. Two landmark model releases, major research from Anthropic, and the EU AI Act going into full enforcement. Here's what you need to know.
Lead Story
This Edition
Meta Releases Llama 4: Open Weights, 400B Parameters, and a Free Commercial License
Meta has released Llama 4, a 400-billion parameter open-weights model with a permissive commercial license. The release…
Anthropic Publishes Research on Constitutional AI 2.0 and Self-Correction in LLMs
Anthropic has published a major research paper on Constitutional AI 2.0, introducing a new approach to AI alignment…
EU AI Act Full Enforcement Begins: What Businesses Operating in Europe Need to Know
With full enforcement of the EU AI Act now underway, businesses using AI systems in Europe face new compliance…
Get the next edition
Subscribe free to receive the vff briefing in your inbox.