Claude for Google Sheets: Official Sidebar vs =CLAUDE() Formulas

=CLAUDE("Summarize this customer review in one sentence, then add a sentiment label: Positive, Neutral, or Negative. Review: " & A2)

=CLAUDE("Rewrite this for " & B2 & " in a " & C2 & " tone. Keep the meaning, remove jargon, and make it easy to skim: '" & A2 & "'")

=CLAUDE("Create 5 distinct campaign angles for " & A2 & " targeting " & B2 & " who struggle with " & C2 & ". Format for " & D2 & ". Include hook, promise, and CTA for each angle.")

Last updated: October 29, 2026. DocGPT.ai makes GPT for Sheets, a third-party add-on. We are not affiliated with Anthropic; Claude is a trademark of Anthropic.

There are now three practical ways to use Claude with Google Sheets. Anthropic’s official “Claude” add-on (Claude for Google Workspace, launched October 6, 2026) puts a Claude sidebar into the sheet you have open: it can write and fix formulas, build pivot tables and charts, and clean up data — on a paid Claude plan. Claude’s Google Workspace connectors let Claude read and edit your Drive files from the Claude app. And =CLAUDE() formulas (through add-ons such as GPT for Sheets) run Claude inside cells, so the same prompt can process hundreds or thousands of rows.

If you want to chat with Claude about one spreadsheet, use the official sidebar. If you want a Claude answer in every row of a column, use a formula.

Quick answer: which way should you use?

Option 1: Claude for Google Workspace (Anthropic’s official sidebar)

This is what most people mean today by “Claude for Sheets”. Anthropic released it as a public beta on October 6, 2026. One install adds Claude to Google Docs, Sheets and Slides. (Anthropic help article)

What you need

• A paid Claude plan: Pro, Max, Team or Enterprise. It is not available on the free plan.
• You sign in with your Claude account. API keys are not used.
• Chrome, Edge or Safari (Firefox is not supported).

How to install it

1. Open the Claude listing in the Google Workspace Marketplace (publisher: Anthropic) and click Install.
2. In Google Sheets, go to Extensions → Claude → Open Claude.
3. Sign in with your Claude account and keep the sidebar open while it works.

What it can do in Sheets

• Write, explain and debug formulas.
• Build pivot tables and native charts, add tabs.
• Pull a range into Python for joins and cleanup, then write the results back.
• Ask before each edit, or accept edits automatically.

Limits worth knowing

• It works on the file you have open, and the sidebar must stay open.
• A single operation stops after about 6 minutes.
• It cannot read or edit Connected Sheets (BigQuery) tabs, or create triggers and custom menus.
• It does not add a cell function — you cannot put =CLAUDE() in 5,000 rows with it.

Option 2: Edit Sheets from Claude chat (connectors)

In the Claude app you can connect Google Workspace (Gmail, Calendar, Drive, Docs, Sheets, Slides). Claude can then find and read your spreadsheets, create new files, and edit Docs, Sheets and Slides in a pane next to the chat. On Team and Enterprise plans an owner has to enable the connectors first. (Anthropic: Google Workspace connectors)

This is handy for one-off questions (“which deals in this sheet are overdue?”) or for building a sheet from a conversation. Like the sidebar, it is a chat — not a per-row formula.

Option 3: =CLAUDE() formulas for bulk rows (GPT for Sheets)

GPT for Sheets adds =CLAUDE() as a spreadsheet formula. You write the prompt once, point it at a cell, and fill it down. Every row gets its own answer, and the results stay in your sheet like any other column.

When formulas beat a sidebar

• Hundreds or thousands of rows. Reviews, product data, leads, support tickets, keywords — one Claude answer per row.
• Repeatable columns. The prompt lives in the formula, so a teammate can see exactly how each output was made and reuse it next month.
• Pay per use. Claude usage is billed by Anthropic per token on your API key; you do not need a Claude Pro seat.
• Mix models. The same add-on has =GPT(), =GEMINI(), =GROK(), =MISTRAL(), =PERPLEXITY() and =DEEPSEEK() formulas if you want to compare outputs side by side.

Setup in 5 steps

1. Install GPT for Sheets from the Google Workspace Marketplace.
2. Launch it once in any spreadsheet: Extensions → GPT for Sheets™ Docs™ Forms™ Slides™ → Launch.
3. Choose a plan with Claude. =CLAUDE() is available on the Pro User, Business and Lifetime plans (see plans). After you subscribe, click Refresh account in the same menu.
4. Add your Anthropic API key. Create a key in the Claude Console (step-by-step). Then open Extensions → GPT for Sheets™ Docs™ Forms™ Slides™ → Setup API Keys, find Claude (Anthropic) Configuration, paste the key, pick a model, click Check, then Save.
5. Write your first formula in row 2 and fill it down:

=CLAUDE("Summarize this review in one sentence", A2)

Syntax

=CLAUDE(prompt, [value])

• prompt — your instruction, in quotes or as a cell reference.
• value (optional) — a cell or a range that is added after the prompt. A range such as A2:C2 is joined into one request, which is handy for several columns of the same row. To get one answer per row, fill the formula down instead of pointing it at a long range.
• Build prompts with &: =CLAUDE("Write a tagline for " & A2 & " aimed at " & B2). Text like “the product in A2” inside quotes is sent as plain text, not as the cell value.
• The Claude model is chosen in Setup API Keys and applies to all your =CLAUDE() formulas. Full reference: CLAUDE function docs.

Which Claude model to choose

Claude Fable 5.1 ($10 / $50) and earlier models (Opus 5, Sonnet 5, Fable 5, Opus 4.8, Sonnet 4.6, Haiku 4.5) are also in the list. The Claude 3 and 3.5 models, Claude Sonnet 4 and Claude Opus 4 have been retired by Anthropic and no longer work. Prices are from Anthropic’s model overview as of October 29, 2026.

Practical =CLAUDE() examples

Product descriptions (A: product · B: key features · C: audience)

=CLAUDE("Write a 2-paragraph product description for " & A2 & " aimed at " & C2 & ". Highlight: " & B2 & ". End with a short call to action.")

Review analysis (A: review · B: rating · C: category)

=CLAUDE("Review: '" & A2 & "' (rating " & B2 & ", category " & C2 & "). Return: sentiment | main theme | one improvement suggestion")

Expense categorization (A: description · B: amount)

=CLAUDE("Categorize this business expense into one of: Software, Travel, Marketing, Office, Other. Answer with the category only. Expense: " & A2 & ", $" & B2)

Localization (A: English copy · B: language · C: market)

=CLAUDE("Translate into " & B2 & " for the " & C2 & " market. Keep the brand tone and adapt idioms: " & A2)

Personalized subject lines (A: first name · B: last purchase · C: interest)

=CLAUDE("Write 3 email subject lines for " & A2 & ", who bought " & B2 & " and is interested in " & C2 & ". Under 50 characters each, no spam words.")

Account research from your own notes (A: company · B: industry · C: notes)

=CLAUDE("From these notes about " & A2 & " (" & B2 & "), list the likely buying trigger, the main pain point, and one opening line for outreach. Notes: " & C2)

=CLAUDE() does not browse the web. For facts that must be current (news, prices, recent funding), use a web-search formula such as =PERPLEXITY() and let Claude work on its output.

Running hundreds of rows safely

• Test first. Try the prompt on 10–50 rows, fix it, then fill down.
• Freeze results. Use Replace GPT formulas with results (menu or sidebar) to turn finished =CLAUDE() cells into plain values, so Sheets does not recalculate them and you do not pay twice.
• Retry failures. Retry Formulas with errors re-runs only the cells that failed.
• Know the limits. Each cell is one request with up to 4,096 output tokens. Google Sheets stops a custom function after about 30 seconds, and Anthropic’s rate limits for your account apply. Very long prompts or answers are better split into smaller steps.
• Watch costs in the usage page of the Claude Console. =CLAUDE() does not use the add-on’s monthly query quota; Claude usage is billed by Anthropic.

What happened to Anthropic’s original “Claude for Sheets” add-on?

From 2023 Anthropic offered a free Google Sheets add-on called Claude for Sheets, with =CLAUDE() and =CLAUDEMESSAGES() functions and your own API key. As of October 29, 2026 that add-on is no longer listed in the Google Workspace Marketplace, and its old documentation link ends on a 404 page. Anthropic’s current product for Google Sheets is the Claude for Google Workspace sidebar described above.

If your sheets still contain old =CLAUDE() formulas from that add-on, here is how to move:

Other ways to connect Claude and Google Sheets

• Google Sheets MCP server. Google publishes an MCP server for the Sheets API (developer preview) that Claude can use as a client to read and update values and formulas. Good for developers. (Google guide)
• Apps Script + Claude API. Call the Anthropic Messages API with UrlFetchApp from your own script. Full control, but you maintain the code, quotas and error handling.
• n8n, Zapier or Make. Trigger Claude when a row is added and write the answer back. Useful for scheduled or event-driven workflows.
• Copy and paste. For a one-time job, paste the data into Claude and paste the table back.

What each option costs

As of October 29, 2026:

• Claude for Google Workspace and connectors: included with a paid Claude plan — Pro $20 per month ($17 per month billed annually), Max from $100 per month, Team from $25 per seat per month. (Claude pricing)
• =CLAUDE() in GPT for Sheets: a GPT for Sheets Pro User plan ($29.99 per month) or higher, plus Anthropic API usage per token on your own key (see the model table above). Compare GPT for Sheets plans.
• MCP, Apps Script, automations: Anthropic API usage plus whatever your automation tool costs.

Troubleshooting

“Claude” is not in my Extensions menu (official add-on). Check that the add-on is installed for the same Google account, reload the sheet, and use Chrome, Edge or Safari. It needs a paid Claude plan.

The sidebar stopped in the middle of a task. One operation stops after about 6 minutes. Split the task into smaller steps.

=CLAUDE() says you need a “User Pro” or “Business” plan. Claude formulas are not part of the free trial or the Starter plan. Upgrade, then click Refresh account in the add-on menu.

=CLAUDE() says “Please configure your API key”. Open Setup API Keys and save your Anthropic key in the Claude (Anthropic) Configuration section.

“Failed to send message to Claude API” / model not found. The selected model was retired by Anthropic, or the key is wrong. Open Setup API Keys, choose a current model such as Claude Sonnet 5.5, click Check, then Save.

Cells show #ERROR or “Loading…” for a long time. A request took longer than Google’s ~30-second limit for custom functions, or you hit your Anthropic rate limit. Shorten the prompt or the input, wait a minute, then use Retry Formulas with errors.

Results changed after I reopened the sheet. Formulas recalculate. Freeze finished columns with Replace GPT formulas with results.

My teammates see errors in my sheet. To recalculate, each person needs the add-on, a plan with Claude and their own key. Freeze the results before you share, and everyone sees the values.

Frequently Asked Questions

Is there an official Claude add-on for Google Sheets? Yes. Anthropic’s “Claude” add-on (Claude for Google Workspace) works in Google Sheets, Docs and Slides as a sidebar. It needs a paid Claude plan. GPT for Sheets is a separate, third-party add-on that adds =CLAUDE() formulas.

Is Claude for Sheets free? The official sidebar is included with paid Claude plans (Pro and up); it is not on the free plan. =CLAUDE() formulas in GPT for Sheets need a Pro User plan or higher plus your own Anthropic API key, which is billed by usage.

Can Claude edit Google Sheets directly? Yes. The official sidebar edits the sheet you have open (it can ask before each edit), and Claude’s connectors can create and update Sheets from a chat. =CLAUDE() formulas write answers into the cells where you put them.

How do I connect Claude to Google Sheets? Install Anthropic’s Claude add-on for the sidebar, enable the Google Workspace connectors in the Claude app, or install GPT for Sheets for cell formulas. See the comparison table to choose.

Can I still use =CLAUDE() formulas? Yes — with GPT for Sheets. The formula is =CLAUDE(prompt, [value]), the model is chosen in Setup API Keys, and it runs with your Anthropic API key.

Do I need an Anthropic API key? Not for the official sidebar or the connectors — you sign in with your Claude account. Yes for =CLAUDE() formulas in GPT for Sheets, the MCP server and Apps Script.

Which Claude model should I pick for spreadsheets? Claude Sonnet 5.5 for most work, Haiku 5.5 for very large batches, Opus 5.5 when quality matters more than cost.

Is my data used to train Claude? For the official add-on, Anthropic says Docs, Sheets and Slides content is not used for training. With =CLAUDE(), each request goes from Google’s Apps Script servers straight to Anthropic’s API over HTTPS, under Anthropic’s API terms. GPT for Sheets only works with the spreadsheet you have open; it stores your API key in your Apps Script settings and on DocGPT.ai’s backend so the add-on can use it.

Is Claude better than ChatGPT for spreadsheets? It depends on the task; we compared them on real spreadsheet jobs in Claude vs GPT vs Gemini in Google Sheets. With GPT for Sheets you can run =CLAUDE() and =GPT() side by side on the same rows and keep the better column.