Is the official ChatGPT for Google Sheets a replacement for GPT for Sheets?

They solve different problems. OpenAI's add-in is a sidebar assistant that builds, edits and explains spreadsheets in natural language. GPT for Sheets by DocGPT.ai provides AI as spreadsheet formulas (=GPT, =CLAUDE, =GEMINI, =PERPLEXITY, =SERP) designed for bulk row-by-row processing — generating or transforming thousands of rows. Many teams use both.

Does the official ChatGPT add-in have =GPT() formulas?

No. The official add-in works through a chat sidebar that edits the sheet for you. It does not expose custom cell functions for bulk drag-down processing, and it only uses OpenAI models.

OpenAI's add-in is included with ChatGPT plans (Free and Go with limited usage; Plus and Pro within agentic usage limits; Business, Enterprise and Edu). GPT for Sheets by DocGPT.ai has a free tier and premium subscription up to $29.99/month, with models built in.

GPT for Sheets vs the Official ChatGPT for Google Sheets

OpenAI's official ChatGPT add-in vs GPT for Sheets by DocGPT.ai: sidebar assistant vs bulk AI formulas. What each does, plan requirements, and when you need both.

In late 2025 OpenAI shipped an official ChatGPT add-in for Excel and Google Sheets. It is genuinely useful — and it is a different tool than an AI-formulas add-on. Here is what each one actually does, so you can pick (or combine) them correctly.

The core difference

ChatGPT for Google Sheets (OpenAI) is a sidebar assistant: you describe what you want in chat — “build a budget model”, “explain this formula”, “update the assumptions” — and it edits the spreadsheet for you. It shines at building and understanding the spreadsheet itself.

GPT for Sheets (DocGPT.ai) is AI as formulas: =GPT(), =CLAUDE(), =GEMINI(), =PERPLEXITY(), =SERP() live in cells and process your data row by row — a thousand product descriptions, translations or classifications in one drag.

Side by side

	GPT for Sheets (DocGPT.ai)	ChatGPT for Sheets (OpenAI)
Interaction	Formulas in cells	Chat sidebar
Built for	Bulk data processing: generate/transform thousands of rows	Building, editing and explaining spreadsheets
Custom functions (`=GPT()` style)	Yes — 25+ functions	No
Models	GPT, Claude, Gemini, Mistral, Perplexity	OpenAI models only
Live web data	`=SERP()`, `=PERPLEXITY()`	Model browsing within chat
Bulk throughput	Up to 10,000 results/hour, drag-down over any range	Per-conversation edits, agentic usage limits on Plus/Pro
Requires	Free add-on install; premium up to $29.99/mo	ChatGPT account (Free/Go limited; Plus/Pro within agentic limits; Business/Enterprise/Edu)
Repeatability	Formulas re-run identically over new rows	Conversational, each request phrased anew

When the official add-in is the right tool

Building a model or report from scratch by describing it.
Understanding an inherited spreadsheet: formulas, references, assumptions.
One-off edits — “split this column”, “add a summary tab”.

When you need AI formulas instead

Volume: 5,000 descriptions or translations is a drag-down, not a conversation.
Repeatable pipelines: the same prompt column runs on every new data batch — nothing to re-explain.
Model choice: Claude for careful rewriting, Gemini for cheap classification, Perplexity for live web research — per column.
Web data in cells: =SERP() competitor pulls and =PERPLEXITY() enrichment have no equivalent in the official add-in.

Use both

They coexist happily in one spreadsheet: let the OpenAI sidebar structure your model, and run GPT for Sheets formulas over the data columns. Start with a free template or install the add-on.