US Gov AI Vetting Pact, ChatGPT Upgrades to GPT-5.5 & Meta Copyright Lawsuit

Today on AI RADAR: **Top AI labs** agree to US Gov model vetting. **OpenAI** drops **GPT-5.5 Instant** with a **Memory Sources** feature. Plus, publishers sue **Meta** over Llama copyright infringement, and a look at Meta's "Hatch" agent &...