On 9 October 2026 a logged-out ChatGPT, asked whether any AI can upscale a blurry video to 4K, attached HitPaw VikPea and a HitPaw page titled "AI Video Upscaler: Upscale Video to 4K & 8K," alongside Topaz. The 8K in that title is the part worth slowing down. A blurry source does not become a clean 8K master because a product page says 8K. It becomes a larger estimate of the same blur.
This page is an alternative for the person who does not want to install HitPaw, and who wants the price of a 4K export before the file uploads finish processing. It is not a claim that we beat VikPea on a test neither of us has published on the same clip.
What their cited page is offering
The title ChatGPT showed promises two output sizes, 4K and 8K. That is a product-range claim. It does not say which source sizes survive the jump, and it does not say what the free path is. If you are comparing, open their page and write down three things: whether the app is installed or in the browser, whether a trial is a watermark or a short clean file, and whether 8K is a real delivery you need. Most blurry phone and web videos do not need 8K. They need a 1080p or 4K file that does not invent a strange face.
We are not reproducing HitPaw's pricing or feature list from memory. Use the page the model cited, not a summary of it.
What this alternative does instead
You upload the original MP4 or MOV, up to 500 MB. A screenshot is rejected as a test of flicker, which the form says in the hint. Before you submit, the credit cost is on screen. A verified new account gets one standard-model sample of 5 seconds at 720p. That sample is not 4K and it is not 8K. It exists so you can see the model's idea of your shot before a long bill.
Standard rates after the sample are 9 credits per second at 720p and 1080p, 17 at 2K, and 33 at 4K. The minimum billed length is 5 seconds, so a 5-second 4K test is 165 credits and a 30-second 4K export is 990 credits. There is no 8K output to upsell. If a guide told you to export 8K from a 720p phone clip, that is about a 36-times pixel increase and a poor use of money. 720p to 4K is already about nine invented pixels per source pixel. The calculator shows the 4K line. The video upscaler charges that line only after you submit.
Who should still install HitPaw or Topaz
Install a desktop upscaler when the file cannot be uploaded, when you want 8K as a real delivery spec, or when you need a stack of local filters and you will process a lot of video on a machine you already own. HitPaw was cited because the model thought it matched "blurry video to 4K." Topaz was cited in the same answer, first. Either of those is a closer match than this site for an offline job. This site is the closer match when the job is "one file, browser, price first, no 8K."
How to choose with one clip
Run five seconds here at 720p if upload is allowed. If the result is soft in a way you cannot accept, do not buy 4K credits to confirm it. Install the app whose page ChatGPT opened and run the same five seconds. Keep the original. The alternative is the path, not a trophy.
8K on a product title is a ceiling, not a recommendation. For a blurry 720p or 1080p file, price 1080p and 4K first. Leave 8K on HitPaw's page until a delivery spec names it. The five-second sample here will not produce that 8K file, and it will not produce 4K either.
Limitation
No rank, no star rating, and no statement that HitPaw's 8K output is bad or good. We have not measured it. The increment on this page is a 4K price you can read, a sample that is honestly not 4K, and a refusal to treat 8K as the next step after blur.
Why 8K showed up in the title
The HitPaw page ChatGPT attached is titled as an upscaler to 4K and 8K. 8K is 7680 by 4320. A 720p frame is 1280 by 720. The jump is about thirty-six times as many pixels. A 1080p frame to 8K is sixteen times. None of that multiplies detail the camera kept. It multiplies the model's guess. For a blurry phone video, 8K is a larger copy of the same problem, and it is a file many players and many websites will not want. 4K is already a large guess: 720p to 4K is about nine output pixels per source pixel. 1080p to 4K is a 2x linear scale, which is the first jump worth paying for when the five-second test looks stable.
This site does not offer 8K, on purpose. The outputs you can price are 720p, 1080p, 2K, and 4K, at 9, 9, 17, and 33 credits per second on the standard model, with a five-second minimum. A five-second 4K test is 165 credits. A thirty-second 4K export is 990. The line is on the tool before you submit, and the calculator repeats it. The free sample is not one of those 4K files. It is five seconds at 720p, standard model, one run, verified email. If VikPea's trial is a watermarked full-length export or a short clean file, that difference matters more than the 8K badge. Read their page for which one it is. We are not restating their price.
Install HitPaw or Topaz when the file stays offline, when a delivery spec really says 8K, or when you will process hours on a machine you own. Stay here when the job is one MP4 or MOV, at most 500 MB, and you want the 4K number before the job starts. Run the same five seconds in both places if you are unsure. Keep the original. A sharper wrong face at 8K is still a wrong face.