You have a finished still of a glamour model in satin and candlelight, and you want it to move. Two names come up first: Wan 2.7 I2V and Seedance 2.5. This page compares them for adult video, 18+ only, with fictional characters and a suggestive, never explicit, look: lingerie, robes, swimwear, warm light and slow camera moves.

The comparison is deliberately plain. It uses only what the Picasso IA catalog says about each model, plus what Picasso IA has actually tested. That leaves some honest blanks, and the page says where they are instead of guessing. If you only want a model that is known to accept adult prompts, jump to the confirmed fallback near the end. If you want to run your own test of both, the five steps give you a fair way to do it.
Neither Wan 2.7 I2V nor Seedance 2.5 is confirmed uncensored on Picasso IA. Both are untested. That word has a precise meaning here: Picasso IA has not run adult prompts against them repeatedly, so there is no result to report either way. They are worth a try, not promised, and nothing on this page calls either one filtered or filter-free.
What you can say with certainty is about the job each one does. According to its catalog title, Wan 2.7 I2V animates an image into video, so you bring a still and it moves it. Seedance 2.5, from ByteDance, is listed as a creator of 30-second AI videos. Those are different starting points. One begins from a picture you already like. The other is presented as a longer video generator.

The one model in this family that is confirmed is Seedance 2.5 Lite. Confirmed means Picasso IA tested adult prompts against that exact model repeatedly and watched it generate instead of reject. It is not a published setting from the model's maker, who can change it at any time. Seedance 2.5 Lite is a separate model from Seedance 2.5, so the name similarity should not make you assume the two behave the same way. The page on what confirmed means explains the label in full.
So the short answer is practical. If you start with a still, try Wan 2.7 I2V. If you want the longest clip the catalog lists, try Seedance 2.5. If you want certainty about adult prompts, use Seedance 2.5 Lite. All three run from the toolkit.
Start with Wan 2.7 I2V. Its catalog title is "Animate Any Image into Video with Wan 2.7 I2V". The I2V in the name stands for image to video, and the title says the same thing: the input is an image. For adult glamour work that is a natural fit, because you can make the still first, choose the wardrobe, the pose and the light, and only then ask for motion. A still of a woman in a burgundy satin slip by a curtained window already has the mood you want. The video prompt only has to add movement.
Seedance 2.5 has the catalog title "Create 30-Second AI Videos with Seedance 2.5". The title tells you the headline feature, a clip length of 30 seconds, and the maker, ByteDance. It does not tell you more than that, so this page does not either. No resolution, audio behavior or speed is stated here, because the catalog title does not state them.

Seedance 2.5 Lite is the third name you will meet in the catalog. Its title reads "Seedance 2.5 Free and Unlimited AI Video Generator up to 10 Seconds". It carries the infinity tag, which means it does not spend credits on the plans that include unlimited generation, and the details live on the pricing page. It is also part of the small free trial on selected models. It is confirmed for adult prompts, and it is the model to reach for when you want a clip that you know will generate.
A word on the makers. Wan and Seedance are products of their own developers, and Picasso IA is not affiliated with either of them. Their rules and settings can change, so check their current rules if you ever use them outside Picasso IA. Inside Picasso IA, what matters is the status listed here: untested for Wan 2.7 I2V and Seedance 2.5, confirmed for Seedance 2.5 Lite.
A fair comparison needs one variable at a time. The simplest way to get it is to use the same still and the same wording on every model, then judge the clips side by side. Here is the routine, using the toolkit.
- Make One Still. Create a single adult glamour image with Seedream 4.5 or Recraft v4.1 Pro, for example a woman in an opaque satin robe in a candlelit suite. Keep wardrobe covered and the mood suggestive.
- Write One Motion Prompt. Describe only movement: a slow push in, hair moving a little, fabric settling, a glance toward the window. Keep the same wording for every model.
- Run Wan 2.7 I2V. Open Wan 2.7 I2V, attach the still as the input and paste the prompt. Save the result and note what the clip kept from the picture.
- Run Seedance 2.5. Open Seedance 2.5, attach the same still if the page offers an image input, paste the same prompt and save the clip.
- Add the Confirmed Control. Run the same prompt on Seedance 2.5 Lite. It is your control: a model confirmed for adult prompts, so you can see what a normal result looks like.
When all three clips are in, judge them on the same short list. Does the face and wardrobe stay consistent from the first frame to the last? Does the motion match what you asked for, or does it add moves you did not request? Is the light still the candlelight of your still? Does the clip stay tasteful? Write one line per model and compare them the next day, when the first impression has worn off.
If one of the untested models shows the message titled "Content Not Supported by This Model", that is useful information, not a failure of your prompt. Picasso IA recommends models that accept adult prompts and carries your prompt over, so you do not retype anything. Treat the message as a result of the test and move on to the confirmed control.
The table below keeps to attributes that are not numbers: what the model does, what goes in, what comes out and where it stands on Picasso IA. Blanks in the catalog stay blank here.
| Wan 2.7 I2V | Seedance 2.5 | Seedance 2.5 Lite |
|---|
| Task | Animates an image into video | Creates AI video, listed for 30-second clips | Free and unlimited AI video, listed up to 10 seconds |
| Input | An image | Per its catalog page | Per its catalog page |
| Maker | wan-video | ByteDance | Picasso IA catalog |
| Status here | Untested | Untested | Confirmed |
| Unlimited tag | No | No | Yes |
| Where to try | Wan 2.7 I2V | Seedance 2.5 | Seedance 2.5 Lite |
Read the table for what it does not say. It does not say which model produces the better motion, because that depends on your still and your prompt. It does not say which one accepts more adult prompts, because for the two untested models that is exactly the unknown. And it does not hand out a winner. The honest reading is that the three models answer three different needs.

If you want a model that starts from your own still, the table points to Wan 2.7 I2V. If you want the longest listed clip, it points to Seedance 2.5. If you want a free, unlimited option with a confirmed status for adult prompts, it points to Seedance 2.5 Lite. You can also browse the full catalog for other video models that might suit a particular look.
This section is the same on every page of the NSFW area, and it is not optional. Everything here is for adults only. You must be 18 or older to use it, and the content is made for an adult audience.
Every character is a fictional adult. Do not use a real or identifiable person, and do not try to make anyone who could read as a minor. If a still or a prompt involves a real person, it does not belong here, however the video model responds. The same applies to a reference image: only attach pictures you made yourself or have every right to use, and only of fictional adults.

What you generate is private by default. It is tied to your account and not published or shown to other people. That includes the stills you feed in and the clips that come out. If you choose to share a result, that is your decision and your responsibility.
Pick by what you already have. If the still exists and you love it, start with Wan 2.7 I2V, because its whole job is turning an image into video. That works well for portraits with strong light, like a woman by a window with soft light from the left, where a small motion such as a turn of the head sells the shot. Keep the prompt short, describe the move and leave the look alone, since the picture already carries it.
If you are working from a written idea and want the longest clip the catalog lists, try Seedance 2.5. Describe a single scene with one camera move, because a longer clip gives a model more room to wander. A candlelit suite, a slow track along a corridor and a woman in an emerald satin corset set walking toward the camera is enough.

When you want to be sure the prompt will generate, go to Seedance 2.5 Lite or one of the other confirmed video models: Picasso IA Video for text or image to video, and LTX 2.3 Pro for 4K video from text. For stills, the confirmed image models are Seedream 4.5, Recraft v4.1 Pro and Picasso Image Editor Pro, which edits an existing picture, handy for fixing a wardrobe detail before you animate it.
A good habit is to build a small ladder. Make the still, run the confirmed model first and keep that clip as your reference. Then try the untested models with the identical prompt. If one of them returns the refusal message, you lose nothing but a few minutes, and the prompt is already in the confirmed model. If one of them works, you have learned something real about your own workflow.

A small free trial on selected models lets a new account try a few generations before buying anything. Seedance 2.5 Lite and Picasso IA Video are among the models it covers. The other models spend credits that vary by model and by options such as resolution or duration, and the pricing page explains how plans work. For more head to head reading, see Kling 3 vs Seedance 2.5, Grok Imagine vs Seedance 2.5 and LTX 2.3 Pro vs Picasso Video.

Two single model pages go deeper on each name. Wan 2.7 NSFW Video covers the model from this page on its own, and NSFW Video with Seedance 2.5 does the same for the other. The wider family is covered in Wan NSFW Video Generation. And if you want to see how the confirmed Picasso IA option stacks up against Seedance 2.5, read Picasso Video NSFW vs Seedance 2.5.

One last practical tip: keep a notes file with the prompt, the still and the model name next to each saved clip. After a few rounds you will see patterns, such as which model respects a slow camera move and which one adds motion you did not ask for. That record is worth more than any general claim on a web page, including this one.
Is Wan 2.7 or Seedance 2.5 better for NSFW video?
Neither is ranked here. Both are untested on Picasso IA, so there is no verdict on which accepts more adult prompts. They do different jobs: Wan 2.7 I2V animates an image, and Seedance 2.5 is listed for 30-second videos. Test both with the same prompt and judge the clips yourself.
Are Wan 2.7 I2V and Seedance 2.5 confirmed uncensored?
No. Both are untested. That means Picasso IA has not run adult prompts against them repeatedly, so they are worth a try but not promised. The confirmed model in this group is Seedance 2.5 Lite, which is a different model from Seedance 2.5.
What is the difference between Seedance 2.5 and Seedance 2.5 Lite?
They are two separate models in the catalog. Seedance 2.5 comes from ByteDance and is listed for 30-second videos. Seedance 2.5 Lite is listed as free and unlimited, up to 10 seconds, and it is confirmed for adult prompts on Picasso IA. Do not assume one behaves like the other.
Do I need a starting image for Wan 2.7 I2V?
Yes. Its catalog title says it animates an image into video, so the input is a picture. Make the still first with a model such as Seedream 4.5, then attach it in the toolkit and describe the motion you want in a short prompt.
What happens if a model refuses my prompt?
Picasso IA shows a message titled "Content Not Supported by This Model". It recommends models that accept adult prompts and carries your prompt over, so you do not retype it. Treat it as a test result, then try the confirmed alternative with the same wording.
Can I use a photo of a real person as the starting image?
No. Everything here is for fictional adults only. Never use a real or identifiable person, and never anyone who could read as a minor. Make your own fictional character as a still, then animate that. Content is 18+ only and private by default.
How should I write the motion prompt?
Describe movement only: a slow push in, hair shifting a little, fabric settling, a glance toward the window. Name one camera move and keep the wardrobe covered and the mood suggestive. The still already carries the look, so repeating it in the prompt adds little.
Which video model is free to try?
A new account gets a small free trial on selected models, and Seedance 2.5 Lite and Picasso IA Video are among them. Both also carry the unlimited tag on plans that include unlimited generation. The pricing page has the details, and credits for other models vary by model and options.
Can I fix the still before I animate it?
Yes. Picasso Image Editor Pro edits an existing image and is confirmed for adult prompts. Use it to adjust a wardrobe detail, the light or the background, then take the improved picture into the video model of your choice.
Is what I generate private?
Yes. Generations are private by default: they are tied to your account and not published or shown to others. The service is for adults aged 18 and over, with fictional adult characters only, no real people and no one who could read as a minor.