Eustace vs Groundery

Eustace is a web-based fact-checking workspace for writers and researchers working with AI-assisted drafts. Users can paste text or import a URL, PDF, or Word file; scanned PDFs are processed with OCR. The service extracts candidate factual claims and displays their original quotes so users can select which to verify. Approved claims are checked against fresh web sources rather than the submitted document. Its ledger uses ten verdicts and three confidence levels, and the product says it signals uncertainty when evidence is thin or mixed. Users can inspect sources, attach private evidence, override a verdict with the change recorded, and export a Markdown report with claims, verdicts, confidence, and citations. Eustace says it does not sell user data or use documents to train AI models. The Free plan provides 25 lifetime verifications; Pro costs $19/month for 500 each month, with optional $0.05-per-claim overage turned off by default. Automated verdicts, confidence labels, and summaries can be wrong, incomplete, or out of date, so they are intended to support rather than replace editorial judgment.

Groundery extracts factual claims from live or recorded material and checks them against sources chosen for each session. Live inputs include a microphone, a browser tab playing audio, or a stream URL such as YouTube Live, Twitch, or Vimeo. The site says live results usually arrive while the speaker remains on the same topic, ranging from seconds to about a minute depending on the evidence. For recordings, it accepts MP3, WAV, M4A, MP4, MOV, YouTube links, or pasted transcripts. Claims are timestamped so reviewers can revisit the relevant moment, inspect evidence, and share or export reports. Source controls can search the web, limit checks to selected sites, or exclude sites. Groundery says it prioritizes authoritative sources and provides direct links for review. It is available on the web and as a Chrome extension. The Free plan includes 3 hours of fact-checking and 10 instant text checks per month; Pro costs $599 a month. Its terms warn that AI-generated results may be inaccurate or incomplete and are informational aids, not definitive judgments. Uploaded content and results remain until deleted or the account closes, with backups potentially persisting for up to 30 days after deletion.