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.
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Sure, ChatGPT Can Make You a Spotify Playlist. But the Real Question Is Why Would You?

You can reach her at mmeyer@cnet.com. Expertise Macy covers consumer AI products and their real-world impact Credentials Macy ...