1
Ask for one change only
Change only the expression. Anything broader — make him look happier, improve the photo — invites the model to re-light the face or move the head, and then the edit is obvious.
Upload the photo · Ask for one change · Keep everything else
AI Smile Generator
Almost every group photo has one person who looked away or simply did not smile. This edits that one thing: the mouth softens into a real closed-lip smile and the eyes crease with it, while the skin texture, the hair, the clothes, the light and the background come back untouched. The test is not whether it smiles — it is whether anyone can tell it was edited.
The eyes have to move tooEverything else stays putFree credits to start
Before / after
One expression changed, nothing else
Our own run on this page's model while building it. Drag the divider and look at what did not move: the stubble, the grey t-shirt's fabric texture, the black jeans, the concrete floor, the shadow on the wall. Every output is AI-generated, so your result varies with your photo and your prompt — read this as what the edit can hold.
Drag to compare before and after
AI photo tool
What is this tool actually doing?
It is a targeted expression edit: you upload a photo, ask for a smile, and the model regenerates the mouth and the area around the eyes while matching the original skin, lighting and detail so the rest of the picture is unchanged.
Image tool
The old way of doing this was a warp — the corners of the mouth got dragged upward, which is why those edits always looked slightly rubbery and never touched the eyes. A generative edit rebuilds the region instead, so it can add the crease at the outer eye and the lift in the cheek that make a smile read as real.
Teeth are where these edits give themselves away: if a toothy result comes back uneven, ask for a closed-lip smile instead, which is both easier for the model and usually more natural in a portrait anyway.
Creative engine
How a run works
Upload the photo, keep the preset prompt or name the smile you want, pick the shape. The credit estimate shows before you generate and a failed run is refunded automatically (unless it broke the content policy).
1 photo
What it needs
1 change
What it edits
Free retries
Failed runs
Say which smile you want
Closed-lip and warm, or open and showing teeth. Left unsaid, models default to a broad toothy grin, which is rarely what the photograph needed and almost never what a group shot needed.
List what must not change
Same face, hair, clothing, pose, lighting and background. Naming the constants is what keeps the edit local, and it is the single biggest difference between a believable result and a new person wearing your clothes.
For a smile in motion rather than a still, the laughing face effect animates the whole reaction; if the teeth themselves are the point, the braces filter works on them directly.
Three decisions
How to make the edit invisible
Three things the preset already names for you. Replace them by hand only if you are writing your own prompt.
2
Describe the smile you actually want
A natural, warm closed-lip smile with a slight crinkle at the eyes. That sentence is doing three jobs: setting the type, keeping the teeth out of it, and asking for the eye movement that makes it read as real.
3
Pin the constants
Keep the exact same face, skin texture, hair, clothing, pose, lighting and background. It feels redundant to write and it is the reason the after frame still looks like the same photograph.
Who uses it
Photos worth saving with one edit
Three cases where reshooting is not an option.
The group photo with one blank face
Everybody is fine except one person, and there is no second attempt. Fixing one expression is far less invasive than compositing a face from another frame.
Professional headshots
A stiff expression is the most common reason a good headshot gets rejected. A closed-lip smile is the safe register here, and it keeps the shot usable on a profile.
Old family pictures
Formal portraits from an era when nobody smiled at cameras. Restore the photo first with old photo restoration, then decide whether the expression should change at all.
Answers
Questions before you upload
What it keeps, where it fails, what a run costs.
It does when the prompt pins the constants — same face, skin texture, hair, clothing, lighting, background. Our own run kept the stubble, the fabric texture of the t-shirt and the shadow on the wall unchanged; the only difference between the two frames on this page is the mouth and eyes.
Yes, and it is the riskier option. Generated teeth are the most common tell in this kind of edit — uneven, too white, or one tooth too many. Ask for it if the photo needs it, and be ready to fall back to a closed-lip smile.
It works, but be specific about who — the person on the left, in the blue shirt. Without that the model may adjust more than one face, and then the edit stops being invisible.
Less well. The edit has to match the surrounding detail, so if there is no detail to match, the regenerated area often comes back sharper than the rest of the face — which reads as fake. Upscale first, then edit.
That is your call, and worth making deliberately. Fixing your own family photo is not the same as altering a picture of someone else for something they did not consent to. The line we draw is a photo that has to stand as evidence — a press image, a legal or medical record. A family group shot is not that.
Free credits come with the account and cover the first attempts. After that each edit costs credits like any image, the estimate for your model and size appears in the generator before you start, and a failed run is refunded automatically (unless it broke the content policy).
Kavel pricing — you pay per generation, never per seat
Credits are shared across everything Kavel runs. You see the cost before each run, and a failed job is never charged.
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Start generating before you pay anything, and keep earning credits every day you come back. No card, no account needed.
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What's included
- 15 credits before you sign up
- +40 when you create an account
- +100 a week from daily check-ins
- = 488 a month — 97 images or 12 videos
- No card, no account
- Free engine every day Grok Imagine
- Photo editing Nano Banana 2 Lite
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Starter
The whole shelf from day one — video, image and editing engines on one balance, with enough of it each month to keep a project moving.
$59.80
The whole shelf is open from day one.$29.90 / month
Need more each month?1x · $29.90
Total: 3,150 credits per month
≈ 630 images or 78 videos
What's included
- 3,150 credits per month
- Up to 630 images or 78 videos Grok Imagine Nano Banana
- Every model unlocked Seedance 2.5 Kling 3.0 Veo 3.1
- Clean downloads, no watermark
- Cost shown before you generate
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For work that ships weekly: drafts, final clips and the stills that go with them, with your runs off the shared queue.
$119.80
The best pick if you create on a regular basis.$59.90 / month
Need more each month?1x · $59.90
Total: 7,200 credits per month
≈ 1,440 images or 180 videos
What's included
- 7,200 credits per month
- Up to 1,440 images or 180 videos Grok Imagine Nano Banana
- No shared queue
- Every model unlocked Seedance 2.5 Kling 3.0 Veo 3.1
- Clean downloads, no watermark
Secure checkout by Stripe. Card details never touch our servers.
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For 4K finals and large batches — the biggest monthly balance, off the shared queue, across every engine on the shelf.
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Ideal when several campaigns share one pool.$99.90 / month
Need more each month?1x · $99.90
Total: 13,200 credits per month
≈ 2,640 images or 330 videos
What's included
- 13,200 credits per month
- Up to 2,640 images or 330 videos Grok Imagine Nano Banana
- Built for 4K runs
- No shared queue
- Every model unlocked Seedance 2.5 Kling 3.0 Veo 3.1
Secure checkout by Stripe. Card details never touch our servers.
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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.
More image tools
Other one-thing edits
Tools that change a single element and leave the photograph alone.
Fix the one face that did not smile
Upload the photo, ask for one change, keep everything else. Free credits cover the first tries.