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Opus 5 falls back on bio-related requests, despite Anthropic's documentation claiming otherwise.

Reddit · RonJonJiggleson · August 24, 2026
I'm a research scientist and often use Opus 5 for brainstorming/planning experiments, as well as light data analysis and preparing SOPs for interns. I've tried using Fable in the past, out of curiosity, but it's entirely unusable in my experience, flagging

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