Free DeepSeek AI detector to check any text
A free DeepSeek AI detector for any text. Paste it, upload a file, or drop in a link.
Check your textHow to read your AI detector score
The AI detector gives you a single number from 0 to 100. It is the estimated chance that AI wrote the text, not a yes or no. Here is what each band means.
Probably a person
Reads like human writing. We did not pick up the patterns a model tends to leave behind.
Hard to say
Some of it leans one way, some the other. Read it yourself before you draw a conclusion.
Probably AI
This has the marks of machine-written text. Read it closely before you conclude anything.
How the DeepSeek detector works
Three steps, a few seconds, no setup.
Add your text
Paste it, upload a Word or PDF file, or drop in a link to the page you want to check.
We check the patterns
The model weighs your text against the way DeepSeek writes and the way people write.
Read the score
You get a number from 0 to 100 and a plain read on how likely AI was involved.
What gives DeepSeek away
DeepSeek's models, especially the R1 reasoning line, often lay out their thinking in careful, methodical steps. The prose is fluent and orderly, with the same even pacing and safe word choices common to large language models, and a tendency to be thorough.
Human writing wanders more and commits harder. Our DeepSeek AI detector is trained on DeepSeek output next to human writing, so it reads that steady, step-by-step rhythm rather than the meaning behind it.
How accurate is this DeepSeek AI detector?
On clean test text it is right most of the time, comfortably above nine in ten. Real writing is messier, so read the score as a strong hint, not a fact. Treat any promise of certainty with suspicion.
Short text and edited drafts are the weak spots. Rewriting DeepSeek's output or running it through a paraphraser softens the tells the detector relies on.
DeepSeek V3, R1 and V4
The detector covers DeepSeek's recent models, including the DeepSeek-V3 line, the DeepSeek-R1 reasoning model released in early 2025, the V3.1 and V3.2 updates, and the DeepSeek-V4 preview that arrived in 2026. Reasoning output and standard chat output both fall within what it reads.
- Nov 2023 DeepSeek LLM (first public chat models)
- May 2024 DeepSeek V2
- Dec 2024 DeepSeek V3
- Jan 2025 DeepSeek R1 (reasoning)
- Aug 2025 DeepSeek V3.1
- Dec 2025 DeepSeek V3.2 (with V3.2-Speciale reasoning variant)
- Apr 2026 DeepSeek V4 preview (V4-Pro, V4-Flash)
Where your text goes
The check happens in memory on our own server. As soon as you have a score, your text is dropped. No logs, no database, no training set.
There is no account holding a history of your checks either.
DeepSeek AI detector FAQ
Is the DeepSeek AI detector free?
Yes. The whole tool is free, with no account and no cap on how many checks you run.
Does it work on DeepSeek R1?
Yes. It reads both the V3 chat models and the R1 reasoning output. The newest releases are harder to flag, so weigh borderline scores carefully.
Will it catch DeepSeek text I edited?
Sometimes. Light edits often slip through. Heavy rewriting or paraphrasing can hide the tells well enough to fool it.
Can I upload a file or a link?
Yes. Upload a Word or PDF file, or paste a web address, and we'll pull the text out for you.
Does it work on ChatGPT or Claude too?
Yes. The same model covers ChatGPT, Claude and others. For general use, try the main AI detector.