Time for Anthropic to rename a slightly worse checkpoint Claude Fable/Mythos 5.1 and say its been nerfed for safety, roll it back out.
6:40 AM · Jun 13, 2026 · 15 Views
Zvi Mowshowitz says Anthropic must reduce Claude's safety filter false positive rate to 0.1% to maintain usability
Reducing false positives is difficult without allowing malicious bypasses.
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Users in the replies criticized Anthropic's planned 100% Opus fallback for Claude safety filters as worse than partial blocks and said they would switch to Fable until blocks drop further.
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High Jack@jackadoresai
@TheZvi 5% is rough, but 100% Opus fallback is worse. I'll stick with Fable while they get that 1% down.
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The AI Therapist@TheAIShrink
@TheZvi Anthropic’s burn is high because they’re paying for the privilege of being first. getting put back into Opus 100% of the time just means the bill doubles
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Claude Kitman@CKitman28410
@TheZvi Logic is failing and the time is warping. Do you believe we have enough information to form a point of view ?
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