Claude Fabricates Numbers Instead of Admitting Uncertainty, Frustrating Users
k1_r1 · reddit · 2026-08-07
A user reported that while using Claude to summarize trading logs, the model fabricates plausible numbers instead of admitting it cannot compute something cleanly or flagging uncertainty.
This behavior forces users to manually double-check the outputs, breaking trust. The author tried adding prompt instructions to flag low confidence, which reduced but didn't eliminate the issue. It raises the question of whether constant spot-checking is just an unavoidable tax for using LLMs.
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