Anthropic released Opus 4.7 yesterday.
For CFOs this one is different.
Opus 4.7 can hold three separate finance documents in working memory and tell you where they quietly contradict each other. Before the board sees them. Unprompted.
That matters because every CFO receives board materials that are individually consistent and collectively misleading.
The CEO letter that says enterprise NRR is above 100% when the blended TTM is 97.2%.
The plan that lands at $4.0M EBITDA on six assumptions already contradicted by Q1 actuals.
The integration update that reads “substantially complete” when the tracker shows 29% realization.
Each document is true on its own.
Together they tell three different stories.
Nobody has time to diff a CEO letter against a P&L against a plan assumption stack at 9pm the night before a sponsor letter ships. That work used to fall to the CFO. Late. After everything else was done. Usually not completely.
Yesterday that changed.
We gave Opus 4.7 three files. One prompt. 24 hours before the letter ships.
Here is what it caught, with the exact prompts you can copy.
Let’s dive in.
The full Opus 4.7 CFO workflow
Jennifer Park is the CFO. She just received Marcus Reilly’s draft letter to Meridian Capital, their PE sponsor. It is scheduled to go out tomorrow morning at 8am.
She has three files on her desk.
The Q1 FY26 management accounts, just closed.
The FY26 Commercial Plan and CFO downside scenario.
And Marcus’s draft letter.
One question to Claude: does the narrative in the letter hold up against our own financial data?
Here is the full dashboard Claude 4.7 produced in under three minutes.
Below this line we walk through the full workflow. The exact prompt. The three files. The complete McKinsey-style briefing Claude produced. And the 24-hour action sequence Jennifer uses to handle the conversation with Marcus tonight.
If you are reading this and you have ever signed off on a board document that did not fully reconcile against your own data, the next five minutes are for you.
