标签：#dgxspark

Intro Day 20! I lined up 10 AIs that turn a single photo into a few seconds of video. Half ran locally on my DGX Spark, half in the cloud 🐱 What I used: DGX Spark (LTX-2.3 / Wan 2.2) / 8 cloud models via fal.ai / ComfyUI / ffmpeg The setup Item Value Input One identical photo (my cat on a desk) Length 6 seconds Settings Identical The only variable The prompt Easy prompt The cat looks at the camera and meows once. It opens its mouth, meows, then closes it. Its tail flicks and its ears twitch. Hard prompt The cat stands upright on its hind legs in a kitchen, wearing a small apron, holding a knife in its front paws and chopping vegetables on a cutting board. Steam rises from a pot behind it. Please, just watch it Some of the cats came out with very long legs. Anyway. First half is the easy prompt, second half the hard one. On the easy prompt, local and cloud were a fair match . On the hard one... cloud, I think...! Three rankings below. Ranking 1: Time Time per 6-second clip on the hard prompt. Rank Model Where Time 🥇 LTX-2.3 Cloud 41s 🥈 Wan 2.7 Cloud 92s 🥉 Happy Horse 1.1 Cloud 97s 4 Veo 3.1 Cloud 128s 5 Kling 3 Pro Cloud 205s 6 Seedance 2.0 Cloud 210s 7 LTX-2.3 Local 315s 8 Wan 2.2 Local 651s 9 daVinci-MagiHuman Cloud 710s 10 HunyuanVideo 1.5 Cloud 796s A 19x spread. Look at 1st and 7th. Same model, LTX-2.3 , nearly the same resolution. The only difference is where it ran — 7.6x . Local setup DGX Spark (GB10, 128GB unified memory, ~273GB/s). ComfyUI headless, workflows over its API. LTX-2.3 is distilled fp8 at 8 steps. At 1088×1920 peak memory hit 77.8GB, about 60% of 128GB. That was the ceiling. Dropping to 512×768 finishes in 70s, but with one-fifth the pixels. Wan 2.2 is I2V-A14B fp8, 20 steps, 480×640. Higher resolution does not finish in reasonable time. Ranking 2: Cost Rank Model Per 6 seconds 🥇 Local Electricity only 🥈 LTX-2.3 (cloud) $0.36 🥉 Wan 2.7 $0.90 4 Kling 3 Pro $1.01 5 Happy Horse 1.1 $1.08 6 Veo 3.1 $2.40 7 Seedance 2.0 $4.09 — HunyuanVideo / MagiHum