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Answers about Synth ID Detector: what it checks, why images must be sent as files, how accurate the SynthID and AI voice estimates are, privacy and limits.
Using the bot
What can I send?
Images as a file (JPG, PNG, WebP, HEIC), audio files, music, voice messages, video files and video notes. See getting started.
Why must an image be sent as a file?
Telegram strips all metadata from a photo sent with compression, and the AI labels live in the metadata. Sent as a file, the image arrives untouched. If you send a photo, the bot asks for the file.
How fast is the answer?
A couple of seconds for most files. A large video takes longer because the bot first extracts its soundtrack.
Is it free?
Yes. The bot has no paid plan and no credits. See pricing.
Results
How does the bot know a file is AI?
By labels in the file, by an estimate of the SynthID watermark in images and by an estimate of a synthesized voice in speech. See how to read the result.
The bot found no labels. Is the file real?
Not necessarily. Labels disappear with screenshots, recompression and sending a photo with compression, and some generators do not write them. See how to read the result.
How accurate is the SynthID check?
It is an estimate by an open approximation model, not Google's detector. In the bot's own wording it finds about 9 in 10 Gemini images and occasionally fires on other generators. See checking an image.
How accurate is the AI voice check?
In the bot's own wording it finds about half of synthesized speech and occasionally fires on a real voice. It does not judge recordings shorter than 4 seconds and does not check music or singing. See checking audio and voice.
Does it check the picture of a video?
No. Only the soundtrack and the labels of the file. See checking a video.
Which generators does it recognize?
Google AI, OpenAI, Adobe Firefly, Midjourney, Stable Diffusion, Flux, Suno, Udio, ElevenLabs, Runway and more, when the file names them. See supported generators.
Privacy and the company
Does the bot keep my files?
The bot downloads a working copy to run the check and deletes it afterwards. For each check it keeps a short record: the file name, type and size, and the result with the signs found. You can ask us to delete it: see the privacy policy.
Is it a Google product?
No. Synth ID Detector is a MadBots product and is not affiliated with Google. SynthID is the name of Google's watermark technology.
Where do I report a wrong result?
Write to @madbots_talk or to [email protected] and describe what you sent and what the bot said. Do not send private files you do not want to share.