Uncovering the Real Game-Changers in Large Language Models After a Year of Intensive Testing

A 95 on MMLU doesn't mean your model will write a correct pagination query. I learned this the hard way, running eval after eval until 3 AM, watching green lights that lied to me. After a year of benchmarking LLMs in production — coding tasks, agentic pipelines, RAG pipelines — I've got opinions. So