Anthropic released 10 finance agents.

A financial services plugin marketplace for Claude. Skills, agents, and complete workflows built specifically for finance teams.

For the first time, finance has AI tooling that was actually designed for finance.

The two CFOs must care about most are the Model Builder and the Month-End Closer. The Model Builder is for FP&A workflows. The Month-End Closer is for the work that has resisted every previous wave of AI tools.

That is the one we will test today.

Month-end close is the most painful workflow in the controller’s life.

Beginning balances. Activity detail. Roll-forwards. Tie-outs. GL variances. Items that need sign-off. The work that controllers do at 11pm before the CFO needs the close package.

Every previous AI tool has failed at this work in one of two ways.

• The summarizers read the close files and produced commentary that did not tie to the actual numbers. Useless to a controller.

• The fabricators read the same files and produced confident explanations of variances they did not actually understand. Dangerous to a controller.

What controllers actually need is something that respects the control gate. Surface what is reconciled. Surface what is not. Do not plug gaps. Do not write commentary on numbers that have not been signed off.

That is what Anthropic built.

We ran it on a real Born2Cycle close. March 2026. Three roll-forward areas. Inventory, Accrued Expenses, Debt.

Here is what happened.

Let’s dive in.

The full Anthropic Month-End Closer workflow

Step 1: Install the finance agents inside Claude

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