Stable Diffusion image detector
Fewer than 1 in 2,000 original camera photos are wrongly flagged (0.05%)
Can Perspicax detect Stable Diffusion images?
Yes. Perspicax checks the pixels, so it works on images from Stable Diffusion and the many models built on it, label or not. We test Stable Diffusion XL as one of 13 generators TrueEye 2.3 never saw in training; across all 13, it caught 94.6% of AI images. We have not published a Stable Diffusion-only figure.
Where these images come from
Stable Diffusion is Stability AI's family of open-weight image models. Anyone can run it on their own computer, and thousands of community fine-tunes and apps are built on it, from photo-realistic portrait models to anime styles.
Labels and watermarks
Open-weight models carry whatever labels the app running them adds, often none. Some apps write the prompt and settings into the file, a strong clue while it lasts; a re-save removes it. Don't expect SynthID or Content Credentials, so Perspicax checks the pixels.
- SynthID watermark checkSupported
What we measured
How we tested Stable Diffusion
Stable Diffusion XL is part of our never-seen test: 13 generators that TrueEye 2.3 never saw in training, 12,242 images in all, counted the way Perspicax answers (inconclusive counts as a miss). Across the set, it caught 94.6%. The figure is pooled across the 13 generators, so it shows how TrueEye 2.3 handles generators it has never met, not how it does on Stable Diffusion alone.
One pooled result across 13 generators, not a Stable Diffusion-only figure. See every number
Worth knowing
Because anyone can fine-tune Stable Diffusion, two "Stable Diffusion" images can look nothing alike. That is why we test on generators held out of training: it shows how TrueEye 2.3 copes with models it has never met.
How it worksQuestions about Stable Diffusion images
Can Perspicax detect Stable Diffusion images?
Yes. It checks the pixels, so it doesn't need a label. Across 13 generators TrueEye 2.3 never saw in training, Stable Diffusion XL among them, it caught 94.6% of AI images.
Do Stable Diffusion images have metadata?
Sometimes. Apps that run it often save the prompt and settings in the file, and that text is a strong clue while it lasts. A screenshot or a re-save removes it.
Does it work on fine-tuned and community models?
Perspicax checks the image itself, whichever model made it. We publish numbers only for what we have measured: Stable Diffusion XL, as part of our never-seen set.
Which version of Stable Diffusion did you test?
Stable Diffusion XL, including an SDXL fine-tune, as part of the 13 generators in our never-seen test. We have not published results for other versions.
Related guides
Keep checking with the guide for your situation.
- By source
Which AI made this image?
Labels that name the tool, watermarks only their maker can read, and the clues that hint at a generator.
Read the guide7 min - People and profiles
Is this profile picture AI-generated?
Fake accounts, recruiters and people who don't exist: the checks that still work on a single face.
Read the guide8 min - Methods
Reverse image search for AI images
Find the first copy of a picture, the scene from other angles, or the fact-check someone already wrote.
Read the guide7 min
Before you believe it, check it.
Your first 3 scans are free, no account needed. A free account gives you 5 scans every day.