Why? Because 2.6.4 represents the final, most polished build of the before Topaz shifted to a subscription model and a more resource-heavy rendering engine.

Disclaimer: Topaz Labs has changed their product line since 2.6.4. Always check their official website for the latest security and compatibility updates.

Published: April 14, 2026 Category: Software Review / Video Enhancement

But a dedicated group of users still swear by .

If you’ve been following the world of AI video upscaling and restoration, you know that Topaz Labs completely rewrote their flagship product in late 2023/early 2024. The modern "Topaz Video AI" (versions 3.x, 4.x, 5.x) looks and feels entirely different.