[Bug] Fable 5 model unavailable due to overly broad safety filtering on biology topics

Bug Description
I am a researcher and senior scientist in the domains of biomedicine, biochemistry, and cell & molecular biology. I've been using Claude models extensively (under my personal 'Claude Max' account) for biotech work-related and academic projects. I want to try the new model 'Fable 5,' which was launched yesterday, but when I select it, I get a session flag: ("API Error: Fable 5 has safety measures that flag messages on most cybersecurity or biology topics (https://www.anthropic.com/legal/aup). They may also flag safe, normal content. These measures help us bring you Mythos-level capabilities in other areas sooner, and we're working to refine them. Claude Code can't respond to this request with Fable 5.") and it switches to Opus.... I tried to open a new session, selected /model Fable, and typed 'Hello' as the input prompt, but I received the same flagged message. How can I keep working on my projects (which, by definition, overlap with biology topics) with Fable? I am a legitimate user. Thanks in advance for your feedback Joan Isern, PhD

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.170
• Feedback ID: 11504732-4929-4a8d-8a60-dca336cd2ffa

Errors

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