What is the difference between ChatGPT for Excel and Claude in Excel?

Both are add-ins that work in the open workbook and cite the cells they use. ChatGPT for Excel runs on ChatGPT plans, including Free with limited usage; Claude in Excel runs on paid Claude plans. Layerz is neither: it is a structured spreadsheet that an assistant edits through MCP, with the model kept between sessions.

Can ChatGPT connect to Layerz?

ChatGPT can connect to remote MCP servers such as Layerz. OpenAI describes full MCP support with write actions as a beta on Business, Enterprise and Edu plans, and read-only access in developer mode on Pro. There is no Layerz app in ChatGPT's directory today.

Is ChatGPT for Excel enough to build a financial model?

ChatGPT for Excel can build and update a model in a workbook, which is often enough for a one-off. For a model maintained every month, Layerz adds what the workbook does not keep: named variables, a model-level history and written conventions.

Comparisons

Layerz vs ChatGPT for Excel

Short answer

ChatGPT for Excel is OpenAI's add-in that builds and updates models in the open workbook, cites the cells it uses and asks before editing; OpenAI made it generally available on all ChatGPT plans on 5 May 2026. Layerz is a structured spreadsheet that an AI agent drives through MCP, keeping named variables, a history and the model's conventions between sessions, with an Excel export on every plan. Use ChatGPT for Excel to work on a workbook in front of you; use Layerz when the same model is maintained month after month.

Last reviewed 2026-10-19 by Anthony Barbey. Facts about ChatGPT for Excel come from its public pages, linked under Sources.

Comparison table

Fact	ChatGPT for Excel	Layerz
What it is	An OpenAI add-in for Excel (and Google Sheets)OpenAI, ChatGPT for Excel (5 May 2026)	A structured spreadsheet built for an AI agent to edit
Where the model lives	In the workbook cells; ChatGPT asks permission before editsOpenAI Help Center, ChatGPT for Excel and Google Sheets	In Layerz, as named variables with a history; Excel is an export
What the next session starts from	The workbook as it is	The model's named variables, its history and its FINANCE.md conventions
Plans	All ChatGPT plans, with limited usage on Free and Goas of 2026-10-19 · OpenAI Help Center, ChatGPT for Excel and Google Sheets	Individual (free) and Team
MCP	Remote MCP servers with write actions in beta on Business, Enterprise and Edu; read-only in developer mode on Proas of 2026-10-19 · OpenAI Help Center, developer mode and MCP connectors	Remote MCP server, Your own Claude or any MCP client, 29 MCP tools
History	Excel file history (OneDrive or SharePoint)	Individual: 24-hour history and one pinned version. Team: 30-day history, unlimited pinned versions.
Macros	VBA and macros may not be fully supportedOpenAI Help Center, ChatGPT for Excel and Google Sheets	No macros; logic is formulas on named variables
Excel in	Works on any open workbook	Excel and CSV import, with a fidelity score for the formulas kept live
Excel out	The workbook is the output	.xlsx with live formulas, JSON and raw export, on every plan
Price	Included in ChatGPT plansas of 2026-10-19	Free for one editor · Team at 49 € per editor per month

Choose ChatGPT for Excel if

Your team already pays for ChatGPT and works in Excel.
You need to analyse or adjust a workbook you received, today.
The deliverable is the workbook itself, with no monthly rework.

What ChatGPT for Excel does well

Available on every ChatGPT plan, so most finance teams already have it.
Works in the workbook the team already uses, citing the cells it reads and changes.
Asks permission before editing, which keeps the analyst in control of each change.

Choose Layerz if

The same model is updated every month and has to keep its structure.
You want a model-level history and conventions the agent reads at each session.
You work across several clients and reuse one structure with different data.
You use Claude, or switch between assistants, and want the model independent of either.

Using both

Question a client workbook with ChatGPT for Excel.
Import it into Layerz and check the fidelity score.
Maintain the model in Layerz with an MCP client, and export a standard .xlsx with live formulas for the client.

Pricing

ChatGPT for Excel: ChatGPT for Excel is available on all ChatGPT plans, with limited usage on Free and Go, according to OpenAI as of 2026-10-19.

Layerz: Individual: free, unlimited models, one editor. Team: 49 € excl. tax per editor per month, from the second editor. .xlsx with live formulas, JSON and raw export on every plan, never paywalled. Pricing

FAQ

What is the difference between ChatGPT for Excel and Claude in Excel?: Both are add-ins that work in the open workbook and cite the cells they use. ChatGPT for Excel runs on ChatGPT plans, including Free with limited usage; Claude in Excel runs on paid Claude plans. Layerz is neither: it is a structured spreadsheet that an assistant edits through MCP, with the model kept between sessions.
Can ChatGPT connect to Layerz?: ChatGPT can connect to remote MCP servers such as Layerz. OpenAI describes full MCP support with write actions as a beta on Business, Enterprise and Edu plans, and read-only access in developer mode on Pro. There is no Layerz app in ChatGPT's directory today.
Is ChatGPT for Excel enough to build a financial model?: ChatGPT for Excel can build and update a model in a workbook, which is often enough for a one-off. For a model maintained every month, Layerz adds what the workbook does not keep: named variables, a model-level history and written conventions.
How much does each cost?: ChatGPT for Excel is included in ChatGPT plans. Individual: free, unlimited models, one editor. Team: 49 € excl. tax per editor per month, from the second editor.