Gemini 4 Argon editing test

Google · Tested Oct 27, 2026 · 26s · $0.12

84/90 caught

• Grammar & spelling42/45
• Repetitions13/15
• Redundancy14/15
• Consistency15/15

92 comments · 4 extra flags

Gemini 4 Argon caught 84 of 90 planted mistakes, 3rd of 16 models tested. It was strongest on contradictions (15 of 15) and missed most on repeated words (13 of 15). The 4 checks took 26s and cost $0.12; asked for all of them in one prompt, it caught 80.

Every comment Gemini 4 Argon 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.