AI Legal Index
Changelog

Lucio changelog

Every tracked product and technology change at Lucio, dated and sourced. Each entry names the change, its impact and the live source it was graded from.

Product and technology changes only. Funding rounds, valuations, partnerships and awards are excluded, and an acquisition appears only where there is direct product impact. Every entry cites a live retrieved source. Changes to the index's own records are not changelog material; a corrected record carries its own dates.

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LucioOct 15, 2026Vendor
Impact
Medium
Verification
Verified
Product / capability

Lucio opened Lucio Research, a case law research tool for the US, the UK and India, as a free one month public beta with up to 25 searches per user. It reads authorities in full and cites every proposition inline, and an All sources view labels each source it considered as highly relevant, relevant, flagged or discarded.

Buyer relevance. Buyers can test citation grounding on questions they already know the answer to, and the discarded sources view shows what the system set aside as well as what it used. Lucio says its analysis of regulation and legislation is still early, so those answers deserve closer checking.

Axis: Citation Accuracy and Hallucination DisclosureView source
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Every grade and every signal on this index is drawn from public sources and dated. If a record is wrong, out of date, or missing an artifact the index did not locate, send the source and it will be reviewed and the record redated. Vendors are welcome to submit documentation. Nothing on this index is for sale, including a listing, a placement, or a grade.

AI Legal Index

The AI Legal Index is an independent index that tracks changes to AI vendors in legal. It holds 462 vendors across 9 categories, each graded on the same 15 capability axes and recorded against 12 legal signals, from public sources. No vendor pays for inclusion, placement, or rating.

Index Status
Last index update
October 19, 2026
The AI Legal Index is an editorial reference. It is not a regulatory body, not a law firm, and nothing published here is legal advice or a recommendation to retain or avoid a vendor. Records are verified against published sources, bar guidance and public court records. Where a record reads not addressed, the material was not located in public sources on the date shown. See the Methodology page for evaluation standards and limitations.
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