SpreadAPI vs Google Sheets API: Which Is Right for You?
Both let you use spreadsheets programmatically. But they solve different problems in very different ways. Here's an honest comparison to help you choose.
Quick Summary
SpreadAPI
Best for: Using Excel calculations as API endpoints
- + Works with native .xlsx files
- + Identical inputs are answered from a 15-minute result cache
- + MCP/AI integration built-in
- + No Google account needed
- - No real-time collaboration
- - No data storage (calculation only)
Google Sheets API
Best for: Reading/writing data in Google Sheets
- + Free with Google account
- + Real-time collaboration
- + Huge ecosystem
- + Data read/write capability
- - 60 req/min rate limit
- - Excel files have to be converted first
Detailed Feature Comparison
Pricing: Google Sheets API Cost vs SpreadAPI
Google Sheets API is technically free, but running it in production takes extra effort.
Google Sheets API
$0 but...
- 60 requests/min rate limit
- Need Google Cloud project
- Must convert Excel to GSheets
- No SLA for free tier
- Quota increases require billing
SpreadAPI
Free to start
- One service online for free, permanently
- 1,000 calls a month on the Basic plan
- Native Excel support
- AI/MCP included
- Pro: unlimited services, 10,000 calls a month
- See full pricing
When to Choose Which
Choose SpreadAPI when:
- You need Excel formulas as an API
- Callers should get results, not your formulas
- You want AI/MCP integration
- You already have .xlsx files
- Your team maintains logic in Excel
- You need on-premises deployment
Choose Google Sheets API when:
- You need to read/write sheet data
- Real-time collaboration is key
- You're already in Google Workspace
- Low request volume (under 60/min)
- You need the sheet itself, not only results
- You need Google Drive integration
Frequently Asked Questions
Is SpreadAPI faster than Google Sheets API?
We have not published a benchmark, so we do not claim a number. What SpreadAPI does for speed: a call with the same inputs as an earlier one is answered from a stored result for up to 15 minutes. The first call after publishing takes longer because the workbook has to be loaded; the calls after it are much faster. Every answer reports its calculation time, so you can measure it with your own workbook.
Can I use my existing Excel files with SpreadAPI?
Yes. Upload your .xlsx file as-is. Google Sheets API requires you to first convert your spreadsheet to Google Sheets format, which can break complex formulas and Excel-specific features.
What are Google Sheets API rate limits?
Google Sheets API allows 60 read requests per minute per user and 300 requests per minute per project. A SpreadAPI service answers up to 1,000 calls per minute; the calls per month depend on the plan: 1,000 on Basic, 10,000 on Pro.
Does SpreadAPI support AI integration?
Yes. SpreadAPI includes MCP (Model Context Protocol) support, allowing AI assistants like ChatGPT and Claude to call your spreadsheet calculations directly. Google Sheets API has no built-in AI integration.
Which is cheaper for spreadsheet API use?
SpreadAPI's free Basic plan keeps one published service online permanently, with 1,000 API calls a month and unlimited drafts. Pro costs €99 a month, with unlimited published services and 10,000 calls. Google Sheets API is free but requires a Google Cloud project and has strict rate limits.
Ready to Try SpreadAPI?
Turn your first Excel workbook into an API in a few minutes. Free, no credit card.
Get Started Free