Gigapixel AI Review:
How to Try It for Free

What Gigapixel AI Actually Does

Gigapixel AI was the first commercially available AI image upscaler, launched by Topaz Labs back in 2019 — and despite years of competition, it's still the name most photographers default to when a client hands them a 640×480 scan and asks for a poster print. The core promise is simple: enlarge an image up to 6x its original size while reconstructing detail that a normal resize would just blur into mush.

The technical difference between Gigapixel and a basic "resize" tool is real. Standard upscaling stretches existing pixels — Gigapixel's nine specialized AI models were trained on millions of image pairs to predict what missing detail should look like, then rebuild it. Hair strands, fabric texture, skin pores, small text — the models are tuned differently depending on what's in the frame, with dedicated options like Face Recovery for portraits and Art & CG for illustrations and digital artwork.

Everything runs locally on your own machine by default, which matters if you're working with client files or anything you'd rather not upload to a server. Topaz also offers unlimited cloud rendering as an alternative if your GPU is underpowered, trading a bit of privacy for speed. Either way, the question most people actually want answered before downloading anything is simpler: can I find out if this is worth it without paying first? The answer is yes — but the free trial has a specific shape worth understanding before you start.

How to Try It for Free, Step by Step

This is the part most reviews skip past too quickly. Here's exactly what happens, in order, if you want to test Gigapixel AI without spending anything.

The Catch: What the Trial Doesn't Tell You

Multiple user reports on the official Topaz Community forum describe the exact moment of confusion this causes: the trial pop-up says you need to "subscribe to unlock all the features," which reads as if most of the app is locked. In practice, almost the entire feature set is unlocked — every model, every setting, full-resolution preview. The only thing actually gated is saving your work. That phrasing in the app itself is genuinely misleading, and it's worth knowing in advance so you don't assume the trial is more limited than it is.

The second thing worth knowing before you start: Gigapixel only enlarges an image you already have — it doesn't generate anything new from scratch. If your actual need is producing a fresh hero image for a landing page or social post, you'd need a separate AI image generator upstream first; Gigapixel is the final-quality step, not the starting point. And if your source image needs denoising or sharpening beyond simple upscaling, that's a different (and separately priced) Topaz product — Topaz Photo AI — not something bundled into Gigapixel's standalone trial.

The hardware requirement is the third quiet catch. Local rendering needs a reasonably capable GPU — Topaz recommends 4GB+ VRAM as a baseline, and modern generative-style models inside the app want considerably more. On a weak or integrated GPU, a single 4K upscale during your trial test can take several minutes rather than seconds, which can make the software feel broken when it's actually just under-resourced. Cloud rendering avoids this, but uses your account's cloud credits even during a trial, so factor that into your test plan.

Trial Test Results: Is It Worth Unlocking?

Since the trial lets you preview full-resolution output without paying, the real question to answer during your free test isn't "does this work" — it's "is the improvement big enough to justify a license for my specific images." Here's how Gigapixel's preview output held up across common real-world source types during testing.

The pattern is consistent with what Topaz's own positioning suggests: Gigapixel earns its reputation on genuinely low-resolution or degraded source material — old scans, compressed web images, underexposed wildlife crops shot at high ISO. If your starting image is already sharp and reasonably high-resolution, the visible improvement narrows considerably, and you may not need the tool at all. This is exactly the kind of thing the free trial is built to help you discover before you pay anything — run your actual problem images through it, not a stock demo photo, before deciding.

One more honest note from real-world use: a 2026 review specifically flagged that modern AI image generators (Flux 2 Pro, Nano Banana 2, and similar) now output natively at resolutions high enough for most web and social use cases, somewhat narrowing the gap Gigapixel used to fill by itself. If your images already come from a high-output generator, regenerating at a higher resolution natively can sometimes beat upscaling after the fact.

What It Costs After the Trial

Here's where we need to be upfront: pricing for Gigapixel AI has changed more than once since 2025, and independent sources currently disagree on the exact current numbers — likely because Topaz has run multiple promotional structures and partially walked back its initial subscription-only announcement for existing customers. Treat the figures below as a current range rather than a fixed quote, and verify on the official pricing page before buying.

The one number every source agrees on: the free trial costs nothing and requires no payment information, regardless of which pricing structure is live when you download it. That makes it genuinely worth doing before you try to parse Topaz's current pricing page — confirm the quality on your own images first, then deal with picking a plan.

Free Alternatives If You Don't Want to Pay

If your trial test convinces you Gigapixel is the right quality bar but you don't want a subscription, you have real options — not just watered-down demos.

Upscayl, built on the Real-ESRGAN model, is the most consistently recommended free equivalent — over 30,000 GitHub stars, active development, and results that hold up well against Gigapixel specifically at 2x upscaling. The gap reopens somewhat at 4x and above, where Gigapixel still tends to edge ahead on the finest details like individual hair strands and small text, though independent testers note that gap has narrowed considerably in the past year. For web and social content — which covers most casual upscaling needs — the free option may simply be enough, and you'll know within minutes of comparing it against your own Gigapixel trial preview.

Who Should Try It

Frequently Asked Questions

Is the free trial really free, with no credit card required?

Yes. You download directly from Topaz Labs, create a free account with just an email and password, and the app opens in Trial mode automatically. No payment information is requested at any point during install or setup.

Can I export or save images during the free trial?

Generally, no — the standard desktop trial lets you process and preview full-resolution results, but clicking Export prompts a license purchase before the file saves. Some bundled or promotional install paths instead cap you at a fixed number of free exports, commonly cited as 10 images. Test an export early so you know which version you have.

How much does it cost after the trial ends?

It depends on which pricing structure is active when you buy — sources currently cite standalone subscriptions roughly in the $12–50/month range, or the bundled Topaz Studio plan starting around $399/year for multiple Topaz tools together. Always check the official pricing page, since this has changed more than once since 2025.

What's the closest free alternative if I don't want to pay at all?

Upscayl, a free open-source desktop app built on the Real-ESRGAN model, is the closest free match — particularly at 2x upscaling. SammaPix offers a no-install browser option for quick one-off jobs.