Black Forest Labs shipped FLUX Video Upscale this week, a tool built specifically to fix a problem generative video has had since it existed: footage that looks fine at generation resolution falls apart the moment you try to blow it up. Faces smudge, water and grass turn into flat grids of noise, and simple pixel interpolation just makes the blur bigger. FLUX Upscale takes a different approach — it regenerates each frame at the target resolution rather than stretching the one it already has.
Two modes, two very different jobs
The tool ships with a real design decision baked in rather than a single “enhance” button. Precise mode holds tight to the source material — Black Forest Labs pitches it specifically for “faces, products, brand assets, footage of real people,” anywhere identity drift would be a problem. Creative mode goes further, inventing fine detail more aggressively to sharpen generated content, with the tradeoff that faces and product shapes can shift slightly from the original. That’s a meaningfully different design than a one-size-fits-all upscaler, and it matches how this actually gets used: a documentary editor and someone touching up a FLUX 3 generation want different guarantees from the same tool.
What it actually does to a file
Source video can be as low as 480p; output tops out at native 4K, with 1080p and 2K in between via 1.5x-3x scale factors (2x by default). Inputs are capped at 20 seconds and 50MB, output at roughly 14.4 megapixels at 24fps, and the original audio track passes through untouched. Pricing runs per megapixel-second of delivered output — input resolution and upscale factor don’t add separate charges, and a rejected clip isn’t billed. It’s accessible now through Black Forest Labs’ API and playground, and — notably — “understands FLUX 3 output natively,” so it’s positioned as a companion to their own video model as much as a standalone tool.
Why this is worth flagging here
This site’s ai-creative-tools coverage keeps running into the same wall: most of what looks like a fresh release traces back to a months-old model wearing a new aggregator timestamp. FLUX Upscale is the real thing — a tool shipped this week, from the lab that made it, solving an actual technical gap (delivery-resolution mismatch) rather than announcing another general-purpose model. It’s a smaller story than a new foundation model, but it’s a genuinely current one.