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Grok 4.6 editing test

xAI · Tested Oct 28, 2026 · 4m 40s · $0.50

76/90 caught

  • Grammar & spelling42/45
  • Repetitions12/15
  • Redundancy9/15
  • Consistency13/15

104 comments · 7 extra flags

Grok 4.6 caught 76 of 90 planted mistakes, 7th of 16 models tested. It was strongest on grammar and spelling (42 of 45) and missed most on redundancies (9 of 15). The 4 checks took 4m 40s and cost $0.50; asked for all of them in one prompt, it caught 66.

Every comment Grok 4.6 left on our 6,000-word test story, where it left it. Click a missed mistake to find it in the text. The checks come from icanwrite, a markdown editor for writers.

Missed · 14