Alpha Mom

New body-physics test for the best AI video tools: The newly released Grok Imagine 1.5, the king Seedance 2.0, Google’s “revolutionary super-duper” Gemini Omni Flash, and the old-timer Kling 3.0 Pro. This time I tested how each model handles realistic running motion, body movement, fabric physics, and natural secondary motion. And the result was much less obvious than I expected. Believe it or not, I can’t call Seedance the clear winner this time. Each model got several attempts. - Grok Imagine 1.5: The new version is finally available on the official Grok website, so I could properly test it. Honestly, I didn’t notice a massive improvement over the previous version. Still, the result was acceptable. It produced the most cartoonish image, and the woman runs as if she’s wearing heels, but the body physics were decent enough. It also understood the instructions quickly and followed them correctly. - Kling 3.0 Pro: The old man decided to test my patience. It repeatedly blocked a simple running scene as adult content, then misunderstood the instructions several times. The successful result has the most realistic lighting and frame rate, but the actual body physics look strange. It almost feels like loose foam padding is bouncing inside the leggings. There are also several visible artifacts and unnatural movements. - Gemini Omni Flash: As usual, it gave me that strange slow-motion, low-FPS look that Google models seem to love. But it didn’t censor anything, understood the instructions immediately, and produced a beautiful, realistic result. Surprisingly, this is the output I liked the most in this test. - Seedance 2.0: Seedance also blocked a couple of generations, just like Kling, but eventually produced a strong result. It delivered the most beautiful and visually appealing footage, but I honestly expected better physics. The video looks great, yet I can’t confidently call it the most physically accurate result. - My ranking: 1. Gemini Omni Flash — not perfect, but the best overall result for me 2. Seedance 2.0 — visually stunning, but I preferred Omni’s physics 3. Grok Imagine 1.5 — cartoonish look and strange running, but still acceptable 4. Kling 3.0 Pro — the longest wait, the strangest physics, and the most inconsistent result Do you agree with my ranking? #AIVideo

@techkasia Yes. They can generate explosions and cinematic action, but a normal running cycle is still the final boss 😅

@YourAlphaMom When AI will learn to do run 🤦🏼‍♂️ it’s always those missing or double steps, it’s so simple left, right, left, the same peace!

New body-physics test for the best AI video tools: The newly released Grok Imagine 1.5, the king Seedance 2.0, Google’s “revolutionary super-duper” Gemini Omni Flash, and the old-timer Kling 3.0 Pro. This time I tested how each model handles realistic running motion, body movement, fabric physics, and natural secondary motion. And the result was much less obvious than I expected. Believe it or not, I can’t call Seedance the clear winner this time. Each model got several attempts. - Grok Imagine 1.5: The new version is finally available on the official Grok website, so I could properly test it. Honestly, I didn’t notice a massive improvement over the previous version. Still, the result was acceptable. It produced the most cartoonish image, and the woman runs as if she’s wearing heels, but the body physics were decent enough. It also understood the instructions quickly and followed them correctly. - Kling 3.0 Pro: The old man decided to test my patience. It repeatedly blocked a simple running scene as adult content, then misunderstood the instructions several times. The successful result has the most realistic lighting and frame rate, but the actual body physics look strange. It almost feels like loose foam padding is bouncing inside the leggings. There are also several visible artifacts and unnatural movements. - Gemini Omni Flash: As usual, it gave me that strange slow-motion, low-FPS look that Google models seem to love. But it didn’t censor anything, understood the instructions immediately, and produced a beautiful, realistic result. Surprisingly, this is the output I liked the most in this test. - Seedance 2.0: Seedance also blocked a couple of generations, just like Kling, but eventually produced a strong result. It delivered the most beautiful and visually appealing footage, but I honestly expected better physics. The video looks great, yet I can’t confidently call it the most physically accurate result. - My ranking: 1. Gemini Omni Flash — not perfect, but the best overall result for me 2. Seedance 2.0 — visually stunning, but I preferred Omni’s physics 3. Grok Imagine 1.5 — cartoonish look and strange running, but still acceptable 4. Kling 3.0 Pro — the longest wait, the strangest physics, and the most inconsistent result Do you agree with my ranking? #AIVideo

@neuraltitan Exactly. Explosions and fast cuts can hide a lot, but simple everyday motion leaves the model nowhere to cheat

@YourAlphaMom Ai mimicking human movemants not in action scenes , space scenes, high impact scenes but in everday occurance scenes is were most fail.

@AIZEN30XX Yes. Better than in the previous test, but nowhere near Omni or Seedance yet

@YourAlphaMom Dang Grok is really bad with physics

Another body-physics test for the best AI video models. This time, Elon’s pride and joy Grok Imagine 1.5 faces the old but stubborn Kling 3.0 Pro, China’s flagship Seedance 2.0, and America’s shiny newcomer Gemini Omni Flash, which developers called “revolutionary,” although I’m still waiting to see the revolution. The new battlefield: jump-rope exercises filmed from the front. There is a lot to analyze here. But let’s be honest. We all know exactly where everyone will be looking. Or rather, at which two points. The result was surprisingly close. - Kling 3.0 Pro: In this test, Kling was the only model that detected adult content in a completely harmless fitness scene and repeatedly refused to generate it. Which is especially funny considering how often Kling is used to bypass censorship with celebrity faces, yet apparently a woman jumping rope is where it draws the moral line. After several attempts, it finally produced a usable result. The lighting and overall realism are strong, as usual, but the actual body physics are the weakest here. It also missed the visual instructions from the prompt, giving me an older-looking model with less flattering proportions instead of the athletic, curvy character I requested. Not terrible, but definitely not Kling’s finest performance. - Grok Imagine 1.5: Apparently, Elon’s creation performs better from the front than from behind. Grok understood the task immediately, generated quickly, and didn’t complain about censorship. The image still has that unmistakably cartoonish Grok look, but the jumping motion is surprisingly fun and the body physics are actually decent. It feels more like a cutscene from a video game than real footage, but this is still one of Grok’s better results in my recent tests. - Gemini Omni Flash: Once again, Omni produced a beautiful and polished image. Google’s usual slow-motion, low-FPS effect is normally one of its biggest weaknesses, but in this specific test it actually worked in its favor. The slower movement makes the secondary motion much easier to see, and the body physics look smooth, convincing, and surprisingly natural. I liked this result a lot. - Seedance 2.0: Seedance performed much better than in the previous body-physics test. The footage is dynamic, vibrant, realistic, and visually the strongest of the four. The physics still don’t look completely natural to me, but the overall result is so convincing that it deserves first place, or at least a shared victory with Omni Flash. Omni may have slightly better body physics, while Seedance wins in movement, realism, energy, and overall image quality. - My ranking: 1. Seedance 2.0 and Gemini Omni Flash. A shared first place. Omni wins on body physics, while Seedance wins on overall realism, visual quality, and dynamic motion. If I absolutely had to choose one, Seedance would take it by a very small margin. 2. Grok Imagine 1.5. Still behind the two flagships, but noticeably better than in the previous tests. 3. Kling 3.0 Pro. Too much censorship, weaker instruction following, and the least convincing physics. The realistic lighting and natural-looking footage save it from being a complete failure. What’s your ranking? And if anyone wants the prompt, ask in the comments and I’ll share it. #AIVideo

@TheMainKrispy @agnesai_sapiens I might include Agnes in a future comparison if I get a chance to test it properly

@YourAlphaMom You forgot about @agnesai_sapiens their video generation is pretty cool on their video v2.0 generation.

@htuna_ @xai That’s a good idea. I’m planning to run a same-reference-image test too — same image, same task, all models. We’ll see who really handles it best.

@YourAlphaMom Create videos using the same reference image for all of them and show the results. @xai Grok will be far ahead.

@Skookie30 @grok Grok really found religion overnight 😅 Clip 3 definitely shows what the model could still do before the safety rails got tighter.

@YourAlphaMom And here me versions but boy im so salty what you could have gotten they went from R ratings to fucking PG @grok. all my other works wasn’t PG that for sure but wasn’t XXX either. It just hit the nice spot. clip 3 goodness. Huff.

@neuraltitan That was the deciding factor for me too. Seedance had the stronger image, but Omni sold the movement better

@YourAlphaMom overall gemini looks more natural

@Rulia2505 That’s exactly why motion tests are so revealing. Seedance handled the fabric best visually, while Omni gave me the most convincing overall body movement. Neither has fully cracked both yet

@YourAlphaMom Body physics is the new benchmark - anyone can fake a still frame, nobody fakes a sprint 🏃‍♂️curious which one cracked the cloth sim

@TruthSe33871974 @TradeNomadic Omni was the only one that felt convincing from start to finish for me. Whatever was happening in Grok’s audio didn’t change that 😄

@TradeNomadic @YourAlphaMom Uh, imagine didn't even have the sound fx, it was a music track lol. Gemini definitely performed the best

@Prolyfic_ Yep, I used Omni through google labs (Flow). Veo is honestly pretty terrible right now, but omni is a different story. It’s been delivering some genuinely strong results

@YourAlphaMom Yea likewise - made me say to myself that I might need to take Omni more serious - very surprising on the realism side esp since I’m not a fan of veo You used google labs for Omni?

@c00kingwithai Exactly. The frustrating part is that the model willing to accept the prompt often isn’t the one that handles the motion best. So sadly, there doesn’t seem to be a secret fix we’re both missing 😅

hahaha well that’s nice to hear, I was wondering if maybe I was missing something 😅 yea I noticed exact same thing, very inconsistent, changing the prompt sometimes has worked for me, other times it hasn’t. the only think I noticed is some models are less restrictive, like wan but obviously like then you don’t get the motion that maybe you wanted from a different model

@c00kingwithai Thank you! The moderation feels completely inconsistent. Rewording the action or changing the camera angle sometimes helps, but I still haven’t found a reliable workaround either

@YourAlphaMom i been running into the same issues where content is getting flagged as adult content immaturely, kinda hard to work around, haven't found a solution yet great write up btw

@ZentrixHQ Glad you enjoyed it! Side-by-side tests make each model’s strengths and flaws impossible to hide.

@YourAlphaMom The difference is incredible. I like it.

@gcampton This is the level of scientific dedication these tests deserve 😌

@YourAlphaMom I’ve watched at least 375 times now and can’t figure out which but I like more.

@Skookie30 @grok You definitely ran a very different kind of benchmark 😅

@YourAlphaMom Here my versions. @grok.

@Underminer1979 Mom knows what the people need 😌

@YourAlphaMom Bless you Alpha mom

@7xillion @icreateddisco4u Those footsteps are doing more acting than the runner 😄 Definitely the weakest part of Kling’s clip

@icreateddisco4u @YourAlphaMom Agree with everything except the audio…the audio is terrible and the steps are too pungent

@lchemistmx Grok definitely skipped leg day 😄

@YourAlphaMom Grok needs more muscle (gluteus).

@arnawa_widagda That’s a sharp read. Omni was the only one that stayed convincing from start to finish for me. Grok looked rougher, but its motion held together surprisingly well

@YourAlphaMom Both Seedance and Kling has motion problems, so only Omni and Grok actually provide consistent flow. Seedance had one, Kling more than one (maybe even three). Though to be honest, Grok way back when also suffered the same problem.