CFO says GPT-6 Sol hard-coded numbers in Excel, causing a major reconciliation error
Dawlphy · reddit · 2026-09-27
A CFO shared a real work mishap with GPT-6 Sol: while doing bank reconciliations, the model hard-coded a number into Excel instead of using =SUM, causing a significant calculation error, and added unnecessary sheets and labels that bloated the workbook. On the plus side, it flagged a discrepancy he hadn't prompted for. He runs a Codex folder with skills and deterministic operating rules for this exact task — GPT-5.6 Sol extra high currently reviews it — and says the new model could probably fill that role, but he doesn't understand its purpose or naming and likely won't use it for work again.
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