FLUX Video Upscale released, upscaling clips up to 4K at 1.5×–3×

FLUX Video Upscale brings FLUX 3 powered super-resolution to video. Send a clip of up to 20 seconds and get it back at up to 4K, with the original audio track preserved.

Key Features

• 1.5×–3× upscaling — upscale_factor scales relative to the source resolution; the output keeps the source aspect ratio, capped at about 14.4 megapixels per frame
• Two modes — creativity: 0 (precise) preserves the source exactly and sharpens it, ideal for faces, products, and brand assets; creativity: 1 (creative, default) restores and invents fine detail for generated footage, textures, and scenery
• Optional prompt — describe the clip's content to steer the enhanced detail in creative mode
• Source limits — up to 20 seconds, 50MB, and 2560 × 1440; rejected clips are not charged
• Pay for delivered output only — $0.07 (precise) / $0.10 (creative) per megapixel-second

Endpoint

POST /v1/flux-tools/video-upscale-v1

See the FLUX Video Upscale documentation to get started, and the pricing page for per-resolution rates.