What is the AI muscle filter?+
It's an AI edit that gives the person in a photo an extremely muscular bodybuilder physique while keeping the face. It's also called the AI steroids filter, after an app that adopted that name in 2024. It's intended as a joke: the face remains unchanged, only the physique transforms, and friends see a massive version of you. People post it as a before and after, or as a short flex clip.
What is the best AI steroids filter?+
We don't rank other tools. The best muscle filter app preserves your own face and clothes while giving you a believable bodybuilder physique. Smew AI's generator preserves your face with a face lock and creates a 2K picture, a 10-second flex video or a buff pet from one photo.
How do I use the AI steroids filter?+
Press "Create your own", select Human or Flex video, upload one photo and press Generate. Smew AI creates the picture or the clip and places it in your Library. You need no app and no prompt.
What would I look like with muscles?+
Upload one photo and press Generate: the Human version displays you muscular in one 2K picture, with your face, your clothes and your place, and a massive bodybuilder physique. It's a joke version, significantly bigger than a real training plan delivers.
Can I type "make me muscular" instead?+
You don't have to. People type "make me muscular", or simply "make me muscle", into AI chatbots; here the prompt is built in, so you only upload a photo. There's no app to install either.
Is there an AI muscle prompt I can copy?+
You don't need one. The Human and Pet versions use the prompt a creator revealed in a January 2026 AI muscle filter tutorial ("Enhance the body definition and muscle tone of the individual in the first image"), plus the bodybuilder size and face rules. The Flex video uses the prompt of a muscle generator video effect. It works for every trend version, from a muscular physique to a buff pet.
Is this the ChatGPT muscle filter?+
No, but it functions the same way without any pasting. Your photo goes to Nano Banana 2.1 (Google's AI image model, the one behind Gemini images) with the prompt already configured, and the face lock preserves your face.
Is there an AI muscle filter app, or does it work online?+
It works online: the generator runs in your browser on Smew AI, on a phone or a computer, so you install nothing.
Is it an AI muscle filter or a photo editor?+
Both, in a sense. It edits your real photo like a muscle filter photo editor, but you never brush or drag anything: you select a version and press Generate. It's not a gym filter that only adds a gym background.
Does the AI muscle filter work on women?+
Yes. The photo preserves your clothes, stretched over the new muscles, and the Flex video gives women a fitted tank top instead of removing the top. The appearance is the same: massive shoulders, large arms and a six-pack. Men receive the muscle man look, women a strong bodybuilder appearance.
Is there an AI buff filter for dogs and cats?+
Select Pet for a still of your pet with the same muscle look. Human is a still of you, and Flex video is about 10 seconds.
Is the AI muscle gain real?+
No. The gains you see are created by AI from a still photo. Nothing changes in real life, and no drugs are involved. State it's AI when you post it.
Can I use it for a gym before and after?+
Yes, as a joke: a muscle growth filter creates a fun before and after, but keep the AI label on and never present it as a real result. It's an enhancer for laughs, not a realistic muscle filter: the physique comes out far bigger than training delivers.
Does the AI muscle generator make videos too?+
Yes. Flex video creates the muscle effect as a clip: 10 seconds, 720p, vertical, with its own sound. The Human and Pet versions create a muscle filter photo.
What does the bodybuilder look include?+
A massive, extremely muscular bodybuilder physique under your own head: rounded shoulders, a thick chest, large biceps, prominent veins and a defined six-pack, in the same light as your photo. It's created by AI as a photo filter, not a lens.
Can I use a photo of my friend?+
Only an adult friend who gave permission. Never use a photo of a child, a celebrity or a stranger, and state it's AI when you post the result.
Does the AI muscle generator cost credits?+
Yes. The Human and Pet photos cost a few credits, and the Flex video costs more, because it's a video. The create page displays the exact price on the Generate button before any charges, and if a run fails, the credits are returned.
Is my photo private?+
Yes. Smew AI does not post your photo or the result anywhere or display them to other users. The result goes to your private Library, and you can delete it there anytime.