AI | Benchmarks
LongEval: The Ultra‑Long‑Context LLM Benchmark Separating Million‑Token Hype from Real Performance
Large language models now advertise context windows measured in hundreds of thousands or even millions of tokens. That promise—drop entire books, codebases, or compliance manuals into the prompt and get precise, reasoned answers—has enormous appeal. It also risks overpromising. As more vendors tout “million‑token” capabilities, buyers need proof that models can actually retrieve, reason, and…