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An agent that cannot read last quarter's decision will make it again in a different way and sound equally certain both times. We make sure the model it reads can answer it.
An AI agent for finance is software that works through a task with several steps, such as matching intercompany balances or drafting a variance note. It records what it read at each step, so a person can check it. Constancia is an EPM consultancy that prepares the data model the agent reads.
Before an agent touches a number the board reads, we ask 3 questions of the model it will use. Has anyone read the data model, who carries the cost if it is worse than expected, and is the foundation built or assumed.
Where the mapping from each ledger to the group chart lives in 1 analyst's workbook, an agent asked to map a new acquisition has nothing to read. It guesses, and the guess looks exactly like every other line.
The agent proposes where a new ledger's accounts sit in the group chart, and it needs the chart with 1 owner per line.
The agent pairs the balances between entities and lists the differences, and it needs both sides posted to the same period.
The agent flags the balance that moved unlike last month, and it needs 13 months of history on the same hierarchy.
The agent drafts why actuals differ from plan by entity and line, and it needs the plan and the actuals on 1 structure.
A named person in finance signs anything that reaches the board pack, and the agent's record of what it read sits beside the signature.
Every mapping, every elimination rule and every definition sits in the model with a date and an owner. The agent reads the record before it acts, and the reviewer sees what it read.
The mapping lives in a workbook, the rule lives in 1 person's memory and the definition changed in the autumn without a note. The agent reads whatever is in front of it and answers with the same confidence.
The agent's work is matching and mapping between ledgers, and 1 entity has nothing to match.
OneStream (EPM software) or Abacum (FP&A software), with the model owned by finance.
An audit clock, an integration or a board that has asked for AI by a date it has already announced.
A group controller or head of FP&A who will put their name to what the agent proposes, period by period.
A single-entity business with a 3 day close has no matching for an agent to do, and its spreadsheet still does the job.
Constancia is certified on both platforms and an official partner of both vendors.
Agentic AI in finance works on the repeating steps of the close and the forecast: matching intercompany balances, proposing account mappings, checking reconciliations and drafting variance notes. Each task has an answer a person can verify against the ledger, and the judgements stay with the finance team.
The best agent is the one that reads your data model directly and records what it read. OneStream (EPM software) ships SensibleAI for its consolidated model, and Abacum (FP&A software) ships Abacum Intelligence for its planning model. We implement both and rank neither against tools we have not run.
General assistants exist, and the finance platforms now carry agents of their own. A general assistant sees the spreadsheet pasted into it, and a platform agent sees the consolidation with its history and its owners.
The standard textbook lists 7 types, from simple reflex agents that react to 1 input up to learning agents that improve from feedback. The agents used in finance are the goal based kinds, given a task with a checkable end and a record to write to.
No AI fixes a model whose definitions disagree, so the best one reads a model that has been settled first. Once the definitions have owners, the choice between the 2 platform agents is smaller than it looks.
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