Check a summary against its source
Paste a summary, from any AI tool or written by a person, and the link it summarises. Yank reads the source and checks every figure and every name in the summary against it, sentence by sentence.
A check publishes nothing. It says whether each figure and name is in the source, never whether the summary is right.
The three answers
- Found
- Every figure and every name in the sentence is in the source Yank read. Each one is listed under it.
- Not found
- The sentence states a figure or a name that is not in what Yank read, and each one is named. That is a claim about what Yank read (the article text, the captions or the transcript, all of it), not about whether the summary is right.
- Nothing to check
- The sentence states no figure and no name, so there is nothing in it this check can hold to the source.
What it checks, and what it does not
Figures and names. A figure is compared by value, so $2 million, 2m and two million are the same figure; a small count written as a word (“the two leaders”) is left alone. A name is a capitalised word that does not start a sentence, matched with or without accents; short abbreviations such as CEO are left alone.
It does not judge whether a claim is true, whether a paraphrase keeps the meaning, or what the summary left out. A summary can pass every check and still miss the point; it can fail one and still be fair. The check shows you where to look.
What it reads
A YouTube video with captions, an article anyone can open, a public PDF, and any source Yank has already yanked are read straight away. A podcast or a video without captions has to be transcribed first, so the check asks you to yank it once.
No model is involved. These are the checks Yank’s own AI summaries pass before they are shown, run on yours.
One quote at a time
To check whether someone really said a particular sentence, use Check a quote: it finds the exact words in the source and shows where.
Questions
Is it free?
Yes. No account needed, and no key.
Is what I check saved?
No. Yank does not keep the words or the link you checked. It counts the check itself: its verdict and the kind of source.
What does Found mean?
Every figure and every name in that sentence is in the source Yank read. It does not mean the sentence is true, or that it says what the source says: a sentence can use the source's figures and names and still miss the point.
What does Not found mean?
The sentence states a figure or a name that is not in what Yank read, and Yank names each one and says what it read: the article text, the captions or the transcript, all of it. It is a claim about what Yank read, nothing more: a caption track can mishear a name, and a source can state a figure in a form Yank does not recognise.
What does it not check?
It does not judge whether a claim is true, whether a paraphrase keeps the source's meaning, or what the summary left out. A sentence with no figure and no name has nothing to check. The first word of a sentence is not read as a name, because every sentence starts with a capital; headings are checked for their figures only; and times written like 12:34 are left out, because in a video summary they say where something was said.
Which summaries can it check?
A summary from any AI tool, or one a person wrote, up to 6,000 characters. Paste it as it came: headings, bullets, bold text, numbered lists, citation numbers and emoji are cleaned away, and each line or bullet is checked as its own sentence.
Does it use AI to check?
No. No model is involved. Yank compares each figure and each name with the text it read, using the same checks its own AI summaries have to pass before they are shown.
Why does a podcast have to be yanked first?
Checking it means transcribing the audio, which Yank does not pay for on a check alone. Yank the episode once, and a check against it is then immediate.