Accuracy & verification
All four tools link each entry back to the source records. That's the baseline any litigation team should expect. Chronos goes further: it adds a confidence score to every fact it pulls out. So a reviewer can check the low-confidence lines first instead of re-reading the whole file.
Superinsight publicly claims OCR accuracy above 95%, including handwritten notes. InPractice and Tavrn document citation-linked output, but they don't publicly describe a per-fact confidence score.
Pricing model
There are two ways to price this work. Chronos and Superinsight charge per case. InPractice charges per page (from $0.05 a page, with 500 pages free). Per-page billing can be cheaper for thin files, but it's hard to predict on a 3,000-page record. Per-case billing stays the same no matter the page count.
Chronos sells credit packs. One credit covers one case, at any page count. The credits never expire, and your whole firm can share them. Superinsight offers per-case pricing or a monthly subscription. Tavrn does not publish pricing.
Focused tool vs. broad platform
Tavrn is the broadest product. It's a personal-injury suite that covers intake, record retrieval, chronologies, and demand-letter drafting. If you want one vendor for the whole PI process, that range is the draw.
Chronos, Superinsight, and InPractice focus more on the record-review and chronology step itself. Chronos is built for the medical chronology and the review work around it — and the cited timeline also feeds demand packages, deposition summaries, and damages worksheets, with push-to-CMS integrations for Clio, Filevine, and Litify.
Security & compliance
Every vendor here markets HIPAA compliance. The difference is in what they publish. Chronos includes a signed BAA with every account (solo to enterprise) at no extra cost. It runs on HIPAA-eligible infrastructure, with AES-256 at rest and TLS 1.3 in transit.
InPractice publicly describes continuous monitoring through Vanta. Superinsight and Tavrn state HIPAA compliance, but they don't publicly say whether every account gets a BAA or a SOC 2 Type II report. Ask any vendor — including us — for a current BAA and the latest attestation before you buy.