FilingLantern: ChatGPT plugin that checks company results against SEC filings

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Filip, the creator of FilingLantern, has released a ChatGPT plugin with a companion website that lets users verify company financial explanations against source documents. Users can ask follow-up questions about reported figures, trace fiscal periods, and follow links to SEC filings. The tool flags when missing or incompatible inputs prevent a calculation from closing, rather than filling gaps with invented numbers. The author stresses that a reconciled calculation does not establish causation, and that full reviewed case studies currently cover only FIX and CME. The tool is positioned as a research aid rather than a source of live prices or investment advice, with a free public demo and a $9 monthly research plan.

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