I gave Claude Opus 4.7 the hardest finance task any CFO could think of

Anthropic just released Claude Opus 4.7 yesterday. It changes how CFOs can use AI.

Apr 17, 2026

∙ Paid

Anthropic says Opus 4.7 is their most capable model yet. Better at long-running agentic work. Better at knowledge tasks. Better at visually verifying its own output.

Anthropic released Claude Opus 4.7 yesterday

So I ran a test.

I gave it the hardest finance task any CFO could think of.

The kind of pack that takes an FP&A team a full week plus a senior reviewer to work through. One prompt. No hand-holding. 20 minutes.

What came back changes how CFOs can use AI.

Let me show you.

Let’s dive in.

First, imagine this

Imagine handing a new hire a messy pile of spreadsheets from every department.

Some numbers are wrong. Some contradict each other. Some are labeled in ways that make no sense. A few are just missing. You ask them to turn it all into a clean forecast for next year’s board meeting.

A weaker AI is like the new hire who does not want to look stupid. They quietly paper over the gaps, pick a number when two numbers disagree, and hand you back something that looks polished but falls apart the moment anyone checks the math.

What Claude Opus 4.7 did here is what a genuinely great analyst does on their best day. It read every footnote. Noticed the contradictions. Raised its hand about the things that did not add up. And told the CFO

Before I build your forecast, here are eleven problems in your data and three places where your team’s assumptions disagree with each other, which version do you actually want?

Then it built the full forecast. The numbers tied together. And it flagged one €2m issue as an audit committee item rather than hiding it.