Elon Musk's social media platform X has open-sourced the machine learning algorithm that curates its 'For You' feed, based on the Grok transformer architecture. The release aims to increase transparency by allowing developers and users to see and improve the recommendation system, which predicts post engagement and balances content from followed and suggested accounts. This move arrives amid scrutiny of X's AI initiatives, including recent restrictions on API access and image editing features due to concerns over AI-generated spam and abuse.