The 6 Best AI Add-ons for Google Sheets in 2026 (Honest Comparison)
A practical comparison of the top AI add-ons for Google Sheets — what each one does well, where it falls short, and which is right for your use case.
There are now dozens of AI tools that claim to work with Google Sheets. Some live inside the sheet as a sidebar. Others are cell functions. A few are just wrappers around ChatGPT with a Sheets logo slapped on.
This comparison cuts through the noise. Here are the six most-used options, what they actually do, and when to use each.
What to Look For in a Google Sheets AI Tool
Before diving into specific tools, here are the criteria that matter:
- Data access: Does it read your actual sheet data, or does it only respond to prompts you type?
- Actions: Can it modify the sheet (write formulas, format cells, add data), or just answer questions?
- Undo: If something goes wrong, can you reverse what the AI did?
- Privacy: Where does your data go? Is it sent to third-party servers?
- Formula validation: If it writes formulas, does it verify they're syntactically correct?
1. SheetMind
Type: AI sidebar addon Best for: Users who want a full conversational AI that can both answer questions and take actions on the sheet
SheetMind is a sidebar that lives inside Google Sheets. It reads your live data, answers questions about it in plain English, writes and inserts validated formulas, creates charts, and applies conditional formatting — all through conversation.
The standout feature is step-by-step undo: every action the AI takes is logged individually, and you can reverse any step without losing the others. It also includes PII detection that flags sensitive data (emails, phone numbers, SSNs) before the AI processes your sheet.
Pros: Full conversational interface, validated formulas (120+ functions), step-by-step undo, RAG-powered context, PII detection Cons: Requires sign-up; a sidebar takes screen space on smaller monitors Pricing: Free (5 messages), Pro $9/mo, Team $29/mo Install: sheetmind.xyz
2. SheetAI
Type: Cell function (=SHEETAI())
Best for: Bulk text processing — classifying, summarizing, or categorizing data in cells
SheetAI adds a =SHEETAI() function you can use in cells, like =SHEETAI("Classify this product description", A2). It's useful for batch processing rows of text data.
The main limitation is that it doesn't read your sheet's context — it only processes the cell value you pass to it. It can't answer questions like "which region had the highest revenue?" because it doesn't see the whole sheet.
Pros: Simple cell-function approach, good for bulk text tasks Cons: No sheet context, no actions, no undo, requires API key Pricing: Free tier, paid plans from ~$12/mo
3. GPT for Sheets (Talaria)
Type: Cell functions (=GPT(), =GPT_LIST(), etc.)
Best for: Power users comfortable with prompt engineering who want ChatGPT inside cells
GPT for Sheets adds a suite of cell functions that call OpenAI's API directly. You can write sophisticated prompts inside cells — useful for text generation, classification, translation.
Like SheetAI, it's cell-based and doesn't understand your full sheet. Each formula call is isolated. It also requires your own OpenAI API key, which adds cost complexity.
Pros: Full access to GPT-4 via cells, flexible prompt writing, no middleman Cons: Requires OpenAI API key and billing, no sheet context, formula-based not conversational Pricing: Free addon, you pay OpenAI directly (~$0.01–$0.10 per call)
4. Numerous.ai
Type: Sidebar + cell functions Best for: Teams wanting AI enrichment pipelines on large datasets
Numerous.ai sits somewhere between a cell function tool and a sidebar. It's primarily designed for enriching data in bulk — taking a column of company names and enriching with descriptions, or classifying product categories at scale.
It has a sidebar but it's more workflow-builder oriented than conversational. If you want to ask "what does my data show?", it's not the right tool. If you want to enrich 10,000 rows, it's strong.
Pros: Bulk data enrichment, handles large volumes well Cons: Not conversational, workflow setup has a learning curve Pricing: Free tier, paid from $19/mo
5. Arcwise
Type: AI sidebar Best for: Data analysts who want a data-analyst-style assistant that writes complex queries
Arcwise is a sidebar focused on data analysis. It can answer questions about your data and write formulas, but it's designed more for advanced users — the interface leans analytical rather than conversational.
It integrates with BigQuery and other data sources beyond Sheets, which is useful if you're pulling data from multiple places.
Pros: Strong analytical capabilities, multi-source data support Cons: Steeper learning curve, less approachable for non-technical users Pricing: Free beta → paid plans
6. Gemini in Google Sheets (built-in)
Type: Native Google integration Best for: Casual users already on Google Workspace Business/Enterprise
Google has been rolling out Gemini natively into Google Workspace, including Sheets. You can ask it questions about your data and get formula suggestions. The integration is seamless since it's built in.
The catch: it requires a Google Workspace Business Standard or higher plan ($14+/user/month). For individual users or small teams on free/personal Gmail, this isn't an option. The feature set is also still maturing.
Pros: Native to Sheets, no install required, no context switching Cons: Requires paid Google Workspace plan, feature set limited compared to dedicated tools Pricing: Included in Google Workspace Business Standard ($14/user/mo) and above
Comparison Table
| Tool | Type | Sheet Context | Can Take Actions | Undo | Privacy Control | |------|------|--------------|-----------------|------|-----------------| | SheetMind | Sidebar | ✅ Full | ✅ Yes | ✅ Step-by-step | ✅ PII detection | | SheetAI | Cell function | ❌ Cell only | ❌ No | ❌ No | ⚠️ Data sent to API | | GPT for Sheets | Cell functions | ❌ Cell only | ❌ No | ❌ No | ⚠️ Sent to OpenAI | | Numerous.ai | Sidebar + cells | ⚠️ Limited | ⚠️ Enrichment only | ❌ No | ⚠️ Third-party | | Arcwise | Sidebar | ✅ Yes | ✅ Yes | ❌ No | ⚠️ Third-party | | Gemini (Google) | Native | ✅ Yes | ✅ Yes | ❌ No | ✅ Google |
Which One Should You Use?
- For conversational analysis + safe actions with undo: SheetMind
- For bulk text classification or enrichment in cells: SheetAI or GPT for Sheets
- For large-scale data enrichment pipelines: Numerous.ai
- For advanced analytics across multiple data sources: Arcwise
- If you're already paying for Google Workspace Business+: Gemini
The safest starting point for most users is a sidebar tool that reads the full sheet and lets you undo actions — you can experiment without risking your data.