User Compares GPT-5.6 vs Opus: One Nails It, the Other Over-Engineers
richie9830 · reddit · 2026-07-31
A Reddit user shared a relatable comparison of how different models handle a rambling 3-minute voice input, highlighting a stark contrast in agentic behavior.
According to the author, GPT-5.6 thought for just 30 seconds, quickly identified the key insight and risks, and offered concise encouragement.
In stark contrast, Opus (fable 5) spent 10 minutes thinking and executed 100 tool calls, only to spit out 10 highly confusing problems and ask, "Do you want me to do anything about them?" The author found this over-engineered approach extremely frustrating.
Related event: Users Find GPT-5.6 Outperforms Opus 5 in Practical Tests(4 posts)→
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