Claude's new model looks great in Claude Code, but users say no ZDR makes it unusable for real work

madhavsinghal_ · x · 2026-09-02

A user questions whether Anthropic's new model (referred to as Fable 5.1) in Claude Code still lacks zero data retention (ZDR) for day-to-day usage, judging from the docs. They note the model is clearly very good based on a day of usage, but without ZDR none of their work touching customer data can use it — great for casual use, unusable for real work.

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