Weekly AI Roundup: May 15, 2026 — The Week the Frontier Paused and Architecture Took Over
Every Friday, SquidCircle cuts through the noise to bring you the AI developments that actually matter for small business operations. No hype. No enterprise-only announcements. Just actionable intelligence. 1. Biggest Tool and Model Drops This Week GPT-5.5 Instant Becomes the New ChatGPT Default (May 5) OpenAI swapped the default model in ChatGPT from GPT-5.3 Instant…