March 2026 AI Roundup: 5 Developments That Changed Everything
Category: AI News (43) Focus Keyword: March 2026 AI developments Publish Status: Draft — Table of Contents 1. [Introduction](#introduction) 2. [GPT-5.4, Gemini 3.1, and Grok 4.20: The Model Race Accelerates](#1-gpt-54-gemini-31-and-grok-420-the-model-race-accelerates) 3. [MCP Protocol Crosses 97 Million Installs](#2-mcp-protocol-crosses-97-million-installs) 4. [Anthropic vs. Pentagon: The AI Governance Crisis](#3-anthropic-vs-pentagon-the-ai-governance-crisis) 4. [NVIDIA GTC 2026: Enterprise Agentic AI Goes Production](#4-nvidia-gtc-2026-enterprise-agentic-ai-goes-production) 5. [Sora Shutdown: Lessons in AI Product Strategy](#5-sora-shutdown-lessons-in-ai-product-strategy) 6. [What It Means for You](#what-it-means-for-you) — Introduction March 2026 was not just a busy month in AI — it was the month where the industry crossed several inflection points simultaneously. Model releases came in rapid succession, an