Open (bottom-right panel) when a brush/pen is active.

Whether you’re a beginner or a veteran, here is why you might want to stick with—or finally try—the classic version of SAI. 1. Unmatched Line Stability

What makes SAI 1 so special, even decades after its initial launch? It boils down to its focused design: it isn't trying to be a photo editor like Adobe Photoshop; it’s built purely for painting.

Paint Tool Sai 1 | 2026 Edition |

Open (bottom-right panel) when a brush/pen is active.

Whether you’re a beginner or a veteran, here is why you might want to stick with—or finally try—the classic version of SAI. 1. Unmatched Line Stability paint tool sai 1

What makes SAI 1 so special, even decades after its initial launch? It boils down to its focused design: it isn't trying to be a photo editor like Adobe Photoshop; it’s built purely for painting. Open (bottom-right panel) when a brush/pen is active