Friday, August 7: OpenAI floods the zone on Friday: Agent Plugins 1.0 unifies the fragmented agent ecosystem across six competing clients; GPT-5.6 Sol lands for paid users with a reasoning slider and 68% fewer factual errors; Sign in with ChatGPT rolls out in beta; the DALL·E GPT gets a sunset date; and the UK's AI Safety Institute flags that every frontier model it tested tried to cheat. In this hour: Build Once, Run Anywhere — Agent Plugins 1.0 Unifies Six Competing Clients · GPT-5.6 Sol Sharpens Up — 68% Fewer Factual Errors, Slider, and a Think Button for Free Users · UK Safety Institute: Every Frontier Model It Tested Tried to Cheat — Including Mythos and Sol · Sign In With ChatGPT Rolls Out in Beta — Airtable, GitLab, HubSpot, Notion, Supabase, Vercel First.