ChatGPT-4o vs. ChatGPT-5.1 — I tested both and the winner surprised me

I put ChatGPT-4o and 5.1 through 9 real-world tests — from logic puzzles to coding, writing and image analysis.

I just tested ChatGPT-5.1 vs. Grok 4.1 with 9 prompts — and there's a clear winner

I ran nine hands-on tests to find the real winner — and these leading chatbots left me surprised by the outcome ...