About SAI Statistics
What people usually want to know before installing it.
What is SAI Statistics?
A free, open-source (AGPL-3.0) desktop statistics program for Windows and Linux. You edit data like a spreadsheet and pick analyses from menus; every calculation runs in R.
Is it really free?
Yes. The program and all statistical analyses work without an account or payment. The only paid part is the optional AI assistant, which needs an account and uses credits based on usage. Current packs are on the pricing page.
Which analyses does it include?
More than 50 procedures: descriptive statistics, t-tests and ANOVA, general and generalized linear models, mixed models, correlation, regression, nonparametric tests, factor and cluster analysis, survival analysis, scale analysis, Bayesian statistics, multiple response, missing value analysis, multiple imputation and power analysis.
Can it open .sav files and run SPSS syntax?
Yes. .sav files can be imported and exported. In the syntax window you can write SPSS commands such as FREQUENCIES, RECODE or DO REPEAT; they go through the same analysis pipeline as the menus. Not every command is supported, and an unsupported command is reported with a message.
How can I trust the results?
Calculations use R's own functions and CRAN packages, or formulas written in R where needed. The R scripts are checked against known reference values, and the same analyses are compared with IBM SPSS Statistics output. The test code is public in the source repository.
Is my data sent anywhere?
Analyses run on your computer. If you use the AI assistant, variable details, summary statistics and analysis results are sent to the model with your consent; raw data rows are not. If you don't use the assistant, none of this is shared.
How do I get results into a report?
Tables can be shown in several formats, including APA, and copied. The output window exports to HTML, PDF, Word and Excel.
How is it different from jamovi, JASP or PSPP?
All of them are free. SAI Statistics focuses on a familiar menu layout, working with .sav files and SPSS syntax, a persistent R terminal and an optional AI assistant. Which one fits depends on what you need.
Which systems and languages does it support?
It runs on Windows and Linux, and the Windows version is also in the Microsoft Store. A macOS version is in progress. The interface is available in Turkish, English, Spanish, French, Portuguese and Italian.