Grok

Seven days of practical lessons from onboarding Grok Bot into a real engineering workflow, from API setup to evaluation loops.

A working engineer’s day-by-day account of putting Grok through real tasks — code review, debugging, writing SQL, explaining logs, and creative work — with concrete prompts and honest verdicts.

Phoenix Rising: How Transformer Models Revolutionized Real-Time Recommendation Systems at Scale In the high-stakes world of social media feeds, where billions of posts compete for fleeting user attention, the Phoenix recommendation system stands out as a groundbreaking fusion of transformer architectures and scalable machine learning. Originally powering X’s “For You” feed, Phoenix demonstrates how large language model (LLM) tech like xAI’s Grok-1 can be repurposed for recommendation tasks, handling retrieval from 500 million posts down to personalized top-k candidates in milliseconds.[1][2][3] This isn’t just another recsys—it’s a testament to adapting cutting-edge AI for production-scale personalization, blending two-tower retrieval with multi-task transformer ranking. ...