This is the final stable build of the original software. It is a 32-bit application, which means it’s incredibly fast but has some limitations:

Support for much larger canvases, auto-recovery (a lifesaver if your PC crashes), perspective rulers, text tools, and better tablet compatibility.

The way colors blend in SAI feels organic, much like real paint.

Technically still in "Technical Preview," meaning it gets frequent updates but can occasionally have minor bugs. Key Features of the Full Version

SAI 2 is a complete technical rewrite. It is available in both 32-bit and 64-bit versions, allowing it to utilize your PC’s full RAM capacity.

SAI’s "S-levels" of stabilization are arguably the best in the industry. It turns shaky hand movements into smooth, professional line art.

Unlike other software that clutters the screen with buttons, SAI keeps the focus on the canvas.