Why Excelerant
The flexibility of Excel, the control of a production system, and the model stays with the people who understand it.
Compared with Excel on its own
The same workbook, under control
Important models often start in Excel, and for good reason: the people who understand the business can build and change them themselves, without waiting for IT.
The trouble starts when a workbook becomes part of a process. It gets copied, e-mailed and changed by whoever has it open, and nobody can say for sure which version produced a number. That is why IT and management want such workbooks replaced. Excelerant keeps the workbook and adds the controls instead.
| Topic | Excel on its own | With Excelerant |
|---|---|---|
| Files | Copies on laptops and shared drives, sent around by e-mail | One central place, used in the browser or through the API |
| Formulas | Anyone with the file can change a formula, often without anyone noticing | Users can only enter inputs. Formulas and VBA change only through a new, checked-in version |
| Macros | Run on one person’s PC, with Excel open | Run on the server without Excel, started from the browser or from Excel |
| Versions | model_v7_final2.xlsx, somewhere in a folder | Every version kept, so any figure can be reproduced |
| Changes | Hard to tell what changed between two files | Compare any two versions: sheets, cells, formulas and VBA |
| Read and write rights | Whoever has the file can see and change everything | Read and write rules per role or person, down to a sheet or a range of cells |
| Audit trail | No record of who calculated what, or with which version | Every calculation logged: who, when and with which version |
| Other systems | Results copied in by hand | Other systems call the workbook through the REST API |
Nothing about the workbook itself changes. The people who built it keep working in Excel, and IT gets what it expects from any production system: one released version, access control, an audit trail and results it can reproduce.
Compared with AI-written code
What about AI?
The other way to get a workbook under control is to rewrite it as software. That used to take months, which is why many models never made it. AI can now do it in hours, and the code may well be good. The difference is who owns the model afterwards.
| Topic | Excel rewritten as code by AI | Your workbook on Excelerant |
|---|---|---|
| Source of truth | The generated code | The workbook itself |
| Results | Ask twice and you may get different code, so every version has to be checked against the workbook | The workbook itself runs, so the results match Excel |
| Ownership | Moves to IT, who maintain and test the code from then on | Stays with the people who built the workbook |
| Changing a formula | A development task: new code, tests and a release | Change the workbook and check in a new version |
| Audit and history | Built separately, often app by app | Version management and audit trail built in |
Generated code is also only the calculation. Sign-in, hosting, version management and an audit trail still have to be built around it, model by model.
Where AI does help is in building and improving the workbook itself. The result is still a workbook the business can read, check and take anywhere, not a black box that has to be maintained and tested.
In short
Keep the flexibility, add the control
You don’t have to choose between the flexibility of Excel and the control of a production system. The business keeps building and changing its models in Excel, with AI’s help if it likes. IT gets one released version, access control and an audit trail. And every figure can be reproduced, at any later date.