2026-05-05: OpenAI Unveils GPT-5.5 Instant: Enhancing ChatGPT's Accuracy and Personalization

OpenAI introduces GPT-5.5 Instant, enhancing ChatGPT's accuracy and personalization. The US government will vet new AI models from Microsoft, Google, and xAI for security risks. Publishers sue Meta over alleged unauthorized use of copyrighted works. Apple plans to allow users to choose rival AI models in iOS 27, while settling a class-action lawsuit over Siri AI claims. Alphabet's stock rises on a $200 billion cloud deal with Anthropic. OpenAI targets $2.5 billion in ad revenue with a new self-serve ads manager. The Irish regulator investigates Meta for dark patterns in social media feeds. Read the full news brief: https://www.metacurate.io/briefs/daily/2026-05-05