Prove your references are real —
and say what you claim they say.

Citegeist is a fact-checker for your bibliography that also happens to format it perfectly. Type or paste your citations; we resolve them to real works, check the source actually supports your sentence, and keep watching for retractions after you publish.

Verify a bibliography — free → How it works
100 fabricated citations passed NeurIPS 2025 peer review. arXiv now holds authors responsible for AI-generated citations they didn't check. Editors, supervisors and courts are getting paranoid — for good reason.

What it does

01

Resolution & confidence

Every citation is matched against CrossRef, OpenAlex and beyond, and scored — so a fabricated reference can't quietly pass as real.

02

Claim-support checking

We read the source and check it actually backs your sentence — verdict plus a quoted passage, never a bare "trust us."

03

Living references

After you publish, we keep watching for retractions, errata, new editions and dead links — and tell you when something changes.

Existence-checking is already commoditised. Half a dozen tools will tell you a DOI exists. Almost none check whether your sentence says what the source actually says — with evidence, every time. That's the part we do.

Early build — the free hallucination checker is live now

Paste a bibliography, get a verdict in seconds

Word add-in, claim verification and monitoring are next on the roadmap.

Try Citegeist free →