Benchmarks rank models. They do not tell you which one handles the file in front of you. Take one real document, send Claude and Grok the same instruction, and read where the two answers split.
Compare the shape of each answer instead of the conclusion. Does it restructure your text, or keep your wording and add missing context? Does it ask a clarifying question, or answer straight? Write that difference down, because it decides which tool fits this task.
Introduce: https://www.supercompareai.com/
Run a second file type before you decide. A contract, a spreadsheet export, and a design brief rarely split the same way, so one result proves little.
Chrome extension: https://chromewebstore.google.com/detail/supercompareai-compare-ch/fhbnhohjeakmodifnnmpmphacbnolfhf
