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perspicaxby avancer.ai

AI Image DetectorKnow when a photo was made by AI.

A free AI image checker from the avancer.ai research lab. Perspicax combines proven computer vision techniques with TrueEye 2.3, our state-of-the-art detector, checks every region of an image and answers in seconds: likely AI-generated, likely real, or inconclusive.

Paste an image or a link anywhere

Your first 3 scans are free. By scanning, you accept our Terms. Images and results are kept until you delete them (Privacy).

  • No account needed
  • Free account: 5 scans a day
  • Fewer than 1 in 2,000 camera photos flagged
In short

What is Perspicax?

Perspicax is an AI image detector. Drop or paste a photo: proven computer vision techniques and TrueEye 2.3, our state-of-the-art detector, check every region of it, then answer likely AI-generated, likely real or inconclusive. In testing it caught 98.6% of images from the newest OpenAI, Google and ByteDance models on average and flagged fewer than 1 in 2,000 camera photos.

Quick check: Is this real or AI? · Guide: How to tell if an image is AI generated

Accuracy

98.6%of AI images caught on average across the newest OpenAI, Google and ByteDance models
  • 97.4–98.8%of ChatGPT images (GPT Image) caught
  • 97.8–100.0%of Gemini images (Nano Banana, Imagen) caught
  • 96.0–99.7%of Seedream images caught
  • 0.05%of original camera photos wrongly flagged: fewer than 1 in 2,000 (99.4% called real)
See all results
Your turn

Real or AI?

Six photos a newsroom, a marketplace or a delivery app could receive today. Call each one, Real or AI-generated, and the card turns over to show the truth.

0 of 6 answeredScore0Streak0
  • A young woman laughing by a cafe windowCafe portrait
  • Two slices of künefe topped with crushed pistachio on a metal plateRestaurant dish
  • A pair of worn white sneakers on a balcony floorMarketplace listing
  • A golden retriever sitting on grass in a parkPhone snapshot
  • Orange sand dunes at sunset, with a white car and a camel caravan far awayTravel photo
  • Two copper pots of Turkish coffee heating in hot sandHospitality
0/6answered

Call all six to see your score.

Each card turns over the moment you call it. Your score and best streak land here.

6 photos skipped. Play all six for a full score.

This round had 3 real camera photos and 3 made with Nano Banana Pro. Each AI photo took seconds to make. Perspicax checks every region of an image to tell the two apart.

Try your own imageShare on X
Take the quiz on its own page
You–
Your calls this round
TrueEye 2.3 · AI97.8%
of Nano Banana Pro images caught in testing
TrueEye 2.3 · Real99.4%
of original camera photos called real in testing
How it works

Proven techniques. A state-of-the-art model.

How Perspicax sees an imageTrueEye reads an image region by region, down to the pixels. Move your pointer to tilt it.

  1. Check it is a photo

    Screenshots are cropped to the photo inside them; posters, documents and artwork still get an answer, marked as a weaker signal.

  2. Examine every region

    Proven computer vision techniques look at the whole image, region by region, down to the pixels.

  3. Ask TrueEye

    TrueEye 2.3, our state-of-the-art detector, looks for the traces image generators leave.

  4. Answer in three bands

    Likely AI-generated, inconclusive or likely real. When the evidence is not strong enough, we say so.

See how it works
What it detects

Built for the images people actually see.

Photos from the apps and models in wide use today, measured one by one.

AI images caught by Perspicax in testing, measured model by model
Images fromCaught in testing
ChatGPT (GPT Image)GPT Image 2.5 Sunburst, GPT Image 2.5 Flare, GPT Image 297.4–98.8%
Gemini (Nano Banana, Imagen)Imagen 4, Nano Banana 2.1, Nano Banana Pro97.8–100.0%
Seedream (Doubao, Dreamina, CapCut)Seedream 4.5, Seedream 5.0 Pro, Seedream 5.0 Lite96.0–99.7%
Grok ImagineGrok Imagine 2.099.0%
FLUXFLUX 398.3%
Bing Image CreatorMAI-Image 2.5100.0%
Other new modelsHunyuan 3.0, HiDream-O1, Qwen-Image 3.0100.0% on average
Original camera photos99.4% called real
All generators
Benchmarks

Accuracy you can check.

Measured on public test sets, counted the way Perspicax answers: inconclusive counts as a miss.

  • 99.4%Camera photosOriginal camera photos correctly called real.
  • 99.7%ImageTimeAI images caught.
  • 96.9%So-Fake-OODReal and AI images from social media.
  • 95.4%OpenFakeIts core set of real and AI still images.
  • 95.5%AIGenImages2026A 2026 benchmark of real and AI images. AUC 99.0.
  • 94.6%Never-seen generators13 generators the model never saw in training, 12,242 images.
  • 94.9%RealChainImages passed along real sharing chains.
  • 94.4%DailyBenchSeven current generators.
Open the accuracy page
Who it's for

Who uses an AI image detector

  • Newsrooms and fact-checkers

    Check a photo before you publish it.

  • Trust and safety teams

    Screen uploads and profile photos at scale.

  • Marketplaces

    Catch AI-made listing photos before they go live.

  • Everyone else

    Check a viral photo before you share it.

For developers

One request. One verdict.

Wait for the answer in the same call, or take a 202 and poll. Idempotency keys, clear errors, and the model version on every result.

Test keys are free on every plan and answer with the results of images you have already scanned. Production keys come with Pro and Enterprise.

Get an API keyRead the API guide
POST /api/v1/scans · example
$ curl https://perspicax.io/api/v1/scans \    -H "Authorization: Bearer $PERSPICAX_KEY" \    -H "Prefer: wait=10" \    -F image=@listing-photo.jpg# 200 OK{  "status": "completed",  "result": {    "label": "ai_generated",    "score": 0.97,    "provenance": { "c2pa": null }  },  "model": { "name": "TrueEye", "version": "2.3" }}
On the roadmap

What's coming next.

Pricing

Free to start. Simple to grow.

No account yet? Your first 3 scans are free.

  • Free

    $0

    No card needed. Sign in with just your email.

    • 5 scans a day
    • Three-band verdict with the detector signal
    • SynthID watermark check
    • API in development mode
    • History kept forever
    Create a free account

  • Pro

    7× Free

    Was $19.99, now $16.67 a month, billed $200 yearly.

    • 35 scans a day, for one person
    • Production API keys, on the same scans
    • Everything in Free
    • Cancel any time
    Upgrade to Pro

  • Enterprise

    For organisations

    Custom

    A contract for your organisation

    One shared pool, per day, week, month or year

    • Scans shared by everyone you invite
    • Roles and permissions for each member
    • Production API keys for the organisation
    Contact us
Compare plans

AI image detector questions

What is an AI image detector?

A tool that tells you whether a picture was made by an AI image generator. Perspicax checks photo-like images: computer vision techniques and TrueEye 2.3, our state-of-the-art detector, examine every region down to the pixels, and it answers in three bands, with inconclusive when the evidence is not strong enough.

Which AI generators can Perspicax detect?

It is built for AI-generated photos in general. We publish measured results for ChatGPT (GPT Image), Gemini (Nano Banana, Imagen), Seedream, Grok Imagine, FLUX and other new models.

Is the AI image checker free?

Yes, to start: your first 3 scans need no account, and a free account gives you 5 scans a day. Pro gives you 35.

What happens to my images?

They stay in your scan history until you delete them, and they are not used to train TrueEye 2.3 unless you opt in.

Before you believe it, check it.

Your first 3 scans are free, no account needed. A free account gives you 5 scans every day.

Scan an image