One photo in · Athletic build out · Free, nothing to download
AI Muscle Generator
A stronger, more athletic build on your own photo, with your face and pose untouched. No app, no gym, no waiting months.
One photo, a stronger build
A real build change, rendered on this page’s model. Drag the divider to compare the original photo with the reshaped result. Every output is AI-generated, so your finished picture varies with your photo, your prompt, and the build you describe — treat this as a playful preview of what the tool can do, not a fixed result or a real transformation.
Drag to compare before and after
What is an AI muscle generator?
It is a fun preview of a fitness goal, not a medical claim — worth saying first, because that is the line this stays on. Instead of imagining the result of months in the gym, you upload a clear picture, describe the physique you want, and the model reshapes the body while keeping your face, pose, and clothing recognizable.
On Kavel the tool runs on the Nano Banana image model, so a reshaped photo finishes in one generation rather than a manual edit.
You start from your uploaded photo — the flow defaults to image-to-image — set the format and the resolution, and the credit estimate updates before you commit; a failed run is refunded automatically (unless it broke the content policy), so trying a second build costs nothing but time. The result suits someone visualising a fitness goal, a creator making a bold before-and-after for fun, or anyone who wants a playful what-if from a favourite photo.
And because the same studio also changes the clothes over that build and restages the pose, one workflow covers a range of looks without a new tool for each. Think of it less as a filter and more as a fast what-if preview — with the direction in your hands, and your own face in the frame.
Creative engine
How the reshaped photo comes together
Upload a photo, describe the build, choose the format and resolution, and the credit estimate updates before you generate.
Athletic physique edit
Upload one clear photo and the model reads your figure, then reshapes the build into a more athletic physique.
Custom physique brief
Describe the look you want — lean and toned, broad and powerful, a subtle change — and the edit follows that brief.
Set the format, check the credit estimate, and generate; a run that fails costs you nothing, so a second build is free to try. Muscle is one edit among several on the same photo: the aging filter moves the years instead, and the gender swap changes the face while leaving the muscle definition alone.
Add a stronger build in three steps
From one photo to a reshaped build, with the cost shown before you commit.
Upload a photo
Add one clear photo with your upper body visible. A fitted top and even light give the model the most to work with.
Describe the build
Set the look: a lean athletic frame, broad shoulders, defined arms, a subtle upgrade. Say lean or say broad — the difference is the whole result.
Check credits and generate
Confirm the estimate, generate the reshaped photo, and download it. If a run fails, it is free, so you can adjust and try another build.
Who adds a stronger build to a photo
Progress-photo jokes, gym motivation, a costume mock-up.
Visualising a goal
See a playful preview of a fitness goal on your own photo, and picture the build you are working toward for motivation.
Creators & fun edits
Make a bold before-and-after for a post or a joke, and turn a plain photo into a scroll-stopping what-if.
Everyday what-ifs
Try a stronger build from a favourite photo just to see it, no gym and no commitment required.
Muscle generator FAQ
Common questions about adding a stronger build to a photo with Kavel.
The model reads your frame under the clothing, then rebuilds the chest, shoulders, and arms at the proportions you describe, keeping the same shirt, face, pose, and light. It is a redraw of the body, not a stretch or a warp of the pixels.
No. Free credits come with the account and a failed run is refunded automatically (unless it broke the content policy). After that, an edit spends credits according to the resolution and the count, with the estimate shown up front.
Yes — it is the single biggest factor. A fitted shirt shows the model where your frame actually is. Baggy clothing hides the body, so it has to guess, and guesses look distorted.
No, and the page will not pretend otherwise. It is a playful, AI-generated preview — not a fitness result, not a medical claim, and not proof of anything. It changes a picture; it does not change a body.
Yes, and subtle usually looks better. Ask for a lean, athletic frame rather than maximum size — the further you push, the more the proportions fight the original photo and the faker the result reads.
It does, though a half-body shot from the waist up is the sweet spot. In a full-body frame the torso is small, so there is less detail to rebuild and the change reads less clearly. If you only have a full-body picture, crop in before you upload it — you will get a noticeably stronger result from the same photo.
Kavel pricing — pay only for what you generate
One credit pool covers Nano Banana images and Seedance and Veo video. The cost shows before every run, and failed jobs are not charged. Use a subscription for ongoing work, or a one-time pack when you just need to top up.
Free
What's included
- 10 credits before you even sign up — no account needed
- +30 more the moment you create one
- +100 credits a week from daily check-ins
- = up to 440 credits a month — about 220 images or 29 videos, on us
- Photo editing on Nano Banana 2 Lite
- Every model on this page stays visible — upgrade to unlock
Secure checkout by Stripe. Card details never touch our servers.
Starter
What's included
- Videos from $0.15 · images from $0.02
- 3,150 credits per month
- Up to 210 videos or 1,570 images a month
- Clean downloads, no watermark
- Works with Nano Banana images and Seedance and Veo video
- Cost preview before you generate
- Generation history
Secure checkout by Stripe. Card details never touch our servers.
Creator
What's included
- Videos from $0.13 · images from $0.017
- 7,200 credits per month
- Up to 480 videos or 3,600 images a month
- Clean downloads, no watermark
- Access to Seedance 2.0, Fast, and Mini
- Nano Banana 2 generation and editing
- Priority credit top-ups
Secure checkout by Stripe. Card details never touch our servers.
Studio
What's included
- Videos from $0.12 · images from $0.016
- 13,200 credits per month
- Up to 880 videos or 6,600 images a month
- Clean downloads, no watermark
- Built for high-volume Kavel generation
- Plenty of room for 4K Kavel runs
- Available across the supported models
Secure checkout by Stripe. Card details never touch our servers.
Credit packs
One-time top-ups — buy extra credits any time you run low.
Credit Pack 1500
What's included
- Videos from $0.20 · images from $0.027
- 1,500 credits
- Up to 100 videos or 750 images
- Clean downloads, no watermark
- No ongoing subscription
- Available across the supported models
- Credits never expire
Secure checkout by Stripe. Card details never touch our servers.
Credit Pack 3600
What's included
- Videos from $0.17 · images from $0.023
- 3,600 credits
- Up to 240 videos or 1,800 images
- Clean downloads, no watermark
- No ongoing subscription
- Available across the supported models
- Use for both video and image generation
- Credits never expire
Secure checkout by Stripe. Card details never touch our servers.
Credit Pack 9000
What's included
- Videos from $0.14 · images from $0.018
- 9,000 credits
- Up to 600 videos or 4,500 images
- Clean downloads, no watermark
- No ongoing subscription
- Handy for Seedance 2.0 final renders
- Credits never expire
Secure checkout by Stripe. Card details never touch our servers.
Charges appear as “KAVEL AI” on your card statement. You can cancel any time from Settings → Billing; cancellation takes effect at the end of the period you already paid for. Operator details, the full model list, and the refund window are on the about page.
Powered by
One credit balance for every Kavel image and video model
Use one balance across every supported image and video model — all of them listed below — and check the credit cost before each request.
Video models
Image models
Model credit guide
What each model costs in credits
You're only charged for successful generations. The exact estimate in the generator varies by model, length, resolution, audio, and number of images.
| Type | Model | Credit cost |
|---|---|---|
| Video | Seedance 2.5 | The long-take tier, priced per second: 5s 480p ≈ 211 credits, 5s 720p ≈ 473. A full 30s take runs ≈ 1,260 at 480p and ≈ 2,835 at 720p. |
| Video | Seedance 2.0 | 5s 720p image-to-video ≈ 188 credits; text-to-video ≈ 308 credits. Scales with resolution and length. |
| Video | Seedance 2 Fast | Faster and lower cost. 5s 720p text-to-video ≈ 248 credits. |
| Video | Seedance 2 Mini | The cheapest Seedance tier. 5s 720p ≈ 154 credits, 5s 480p ≈ 72 credits. |
| Video | Seedance 1.5 Pro | Audio doubles the rate. 5s 720p ≈ 27 credits silent, ≈ 53 with audio; 1080p ≈ 57 and ≈ 113. |
| Video | Veo 3.1 | Billed per video, not per second (Lite tier). About 45 credits at 720p and 53 at 1080p. |
| Video | Kling 3.0 | Audio raises the rate. 5s 720p ≈ 105 credits silent, ≈ 150 with audio; 1080p ≈ 135 and ≈ 203. |
| Video | MiniMax H3 | Fixed 2K, no resolution ladder. Priced per second — a 5s clip ≈ 158 credits. |
| Image | Nano Banana 2 | Generate or edit from text and images. 20 credits per 1K image, 30 at 2K, 45 at 4K. |
| Image | Nano Banana Pro | Consistent run times across generations. 30 credits per 1K or 2K image, 50 at 4K. |
| Image | Nano Banana 2 Lite | Faster, simpler variant, and the everyday editing price: a flat 8 credits per image at every resolution. |
| Image | GPT Image 2 | The lowest-cost premium image model here. 10 credits per 1K image, 15 at 2K, 30 at 4K. |
| Image | Seedream 5.0 Lite | Flat pricing — 20 credits per image whether you generate or edit. |
Other body and portrait edits
The engine behind the reshape, and the edits that pair with it.
Add a stronger build to a photo
Describe the build and see the preview. It is a picture of a goal, not a promise about one.
