Free Cite Checking Software for Legal Work
· LawDiver
What free cite checking software can and cannot do — and how LawDiver CiteDiver cite-checks briefs against 10 million real U.S. opinions without a second LLM pass.
Free Cite Checking Software for Legal Work
Teams searching for free cite checking software or free citechecking software usually want the same thing: a way to citecheck legal work before filing without buying another Westlaw seat for every draft. The market is noisy. Many tools labeled “AI cite check” are a second language-model pass — the same failure mode that invented the bad cite in the first place.
This page explains what free cite-checking software should do, where LawDiver’s CiteDiver fits, and how to choose a tool that actually reduces filing risk.
What free cite checking software must do
At minimum, useful cite-checking software for legal work should:
- Extract case citations from a PDF or Word brief at document scale.
- Resolve each cite against a real caselaw database — not against model memory.
- Flag citations that do not resolve.
- Surface treatment or history signals when the corpus supports them.
- Leave an audit trail of what was checked and when.
Nice-to-haves: pin-cite awareness, statute/rule checking, API access for firm workflows, and exportable reports for the matter file.
If a product only “asks ChatGPT if the cite looks right,” it is not cite-checking software in the sense courts care about after Mata-era sanctions.
CiteDiver: free during rollout
CiteDiver is LawDiver’s cite checking product. During the current rollout it is free with an account.
- Upload a brief (PDF or Word).
- Every extracted case citation is checked against LawDiver’s corpus of more than 10 million U.S. federal and state court opinions.
- Results include resolution status and treatment signals (for example overruled, questioned, distinguished).
- You keep findings and source materials for your audit trail.
The same verification stack is available programmatically through the free caselaw API cite-check endpoints — useful when you need to citecheck legal work inside your own drafting or review app.
Free cite checking vs. KeyCite / Shepard’s
Be precise about marketing language:
| Need | Free / LawDiver path | Traditional citators |
|---|---|---|
| Confirm the case exists | CiteDiver, CaseDiver search, court sites | Included |
| Whole-brief scan before filing | CiteDiver | Manual or add-on tools |
| Deep editorial treatment history | Corpus signals + reading the opinion | KeyCite / Shepard’s strength |
| Secondary sources & treatises | Not CiteDiver’s job | Bundled in paid platforms |
LawDiver does not claim feature-for-feature parity with every KeyCite or Shepard’s editorial mark. It does claim something many “free AI checkers” do not: resolution against a verified opinion corpus, with unresolved cites flagged instead of papered over.
How CiteDiver compares to LLM-only checkers
| LLM-only “cite check” | CiteDiver | |
|---|---|---|
| Authority source | Model weights / web browse | LawDiver caselaw corpus |
| Fabricated cites | Often confirmed confidently | Flagged when unresolved |
| Good-law signals | Unreliable | Treatment flags from corpus |
| Auditability | Chat transcript | Structured run + findings |
For the technical case against trusting probabilistic checkers alone, see Your Cite Checker Is Probably Just Another LLM and Why Do Large Language Models Hallucinate?.
How to get started
- Sign up free.
- Open CiteDiver.
- Upload the brief you plan to file.
- Fix anything flagged; re-check if you rewrite.
- Optional: integrate the caselaw API for automated pipelines.
Need a procedural walkthrough? Read How to cite-check a brief.
Related reading
- Where to search caselaw
- Cheap alternatives to Westlaw
- Caselaw API for legal AI builders
- Lawyer AI ethics and court filings (2026)
Free cite checking software is only useful if it refuses to invent confidence. CiteDiver is built to fail closed on citations it cannot resolve — which is exactly what you want before a filing hits the docket.