Fable 5.1 drops medical refusals, but its 85% life-sciences claim draws scrutiny
JeremyNguyenPhD · x · 2026-09-06
Users report Fable 5.1 answers medical questions without refusals or being rerouted to Opus, a clear improvement over Fable 5's public release. Critics question the claimed 85% figure: it's unclear whether it comes from in-house evals or independent testing, and who defines what counts as life-sciences R&D — a detailed personal diagnosis question could still trip the guardrails.
Related event: Fable 5.1 Answers Medical Questions Without Refusals(2 posts)→
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