Doesn't a licensed corpus mean better coverage?

Inside that publisher's own content, quite possibly. Our choice trades that depth for a source list any firm can inspect and verify for itself, built entirely from public primary sources.

Can we still use our firm's Westlaw or Lexis subscription alongside LegalAI Space?

Yes, as a separate tool for your team. LegalAI Space does not read Westlaw, Practical Law, LexisNexis, Bloomberg Law, Justis or vLex itself. That is a policy about our own research, not a restriction on what your firm may hold a licence for.

Why does an authority sometimes come back 'not found'?

It means the citation could not be confirmed against the allow-list, most often because it exists only in a licensed database we deliberately do not read. The verdict is shown, not hidden.

Sources you can open, on purpose.

CoCounsel is built on the Westlaw corpus; Lexis+ AI on the Lexis corpus. LegalAI Space checks every authority against approved public primary sources, ranked so that courts and legislation come first, with a verdict on each.

Read the security statement Start free

Thomson Reuters' CoCounsel and RELX's Lexis+ AI are each built around their own publisher's licensed corpus. That is a legitimate model and a real source of depth inside that corpus. LegalAI Space made a different choice: research runs against public primary sources only, checked passage by passage, so a firm can open every authority itself. This page describes our own policy; we do not characterise how either competitor verifies its own output.

Dimension	LegalAI Space	CoCounsel and Lexis+ AI
Source corpus	Approved public primary sources only, ranked by authority: legislation.gov.uk, BAILII, Find Case Law, EUR-Lex and named regulator handbooks	A licensed publisher's own corpus (Westlaw or Lexis)
Paywalled sources	Not read: the major subscription databases are off the list by name	The corpus is the product; not applicable to their model
Verdict per authority	Verified, needs a check, or not found, shown on every citation	Not something we can state; ask them directly
Output shape	Executive Brief, Work-Stream Memo, Client Update, Court-Ready OSCOLA, Regulator Response	Not something we can state; ask them directly
Pricing	Published in US dollars on the pricing page, from $0	Typically bundled with an existing research subscription

CoCounsel and Lexis+ AI is a trade mark of its owner and is not affiliated with LegalAI Space or Cognesio LLP. Statements about CoCounsel and Lexis+ AI are drawn from its public materials as understood on the date this page was last reviewed, and may have changed; where we cannot state something, the table says so. Statements about LegalAI Space describe the product as shipped. If you spot an error, write to us and we will correct it.

Approved public sources, ranked by authority

The allow-list covers the United Kingdom, England and Wales, Scotland and Northern Ireland, Ireland, the European Union and the ECHR, plus international bodies, and it is ranked: courts and legislation first, then regulators and official publishers. Where a matter's jurisdiction has no approved list yet, research runs at open-web quality with the same gates and the output says so. An authority available only in a licensed database comes back 'not found' rather than a name we cannot show our source for.

See how verification works

Authorities · 14 · Where we looked

#	Reference	Source	Verdict
1	Tillman v Egon Zehnder Ltd [2019] UKSC 32	—	not yet checked
2	Working Time Regulations 1998 SI 1998/1833, regs 4 to 5, 10 to 14	—	not yet checked
3	Coppage v Safety Net Security Ltd [2013] EWCA Civ 1176	—	not yet checked
4	UK GDPR, Articles 6 and 9 Retained Regulation (EU) 2016/679	—	not yet checked
5	Employment Rights Act 1996, s 1 c 18	—	not yet checked
6	Harlow v Artemis International [2008] EWHC 1126 (QB)	—	not yet checked

The allow-list and the deny-list, and the verdict each authority earned.

Why we refuse a licensed corpus

Citing from a database we cannot show you the source for is not a check we can stand behind. Leaving those domains off the list is a deliberate limit, not an oversight, and it is stated as one rather than hedged.

Read the security statement

Agents · Contract Agent · Employment Contract Compliance ReviewCompleted

Mapped out the plan
Which sources answer which clause, and in what order.
Confirmed the jurisdiction in scope
England and Wales; Irish and EU material labelled comparative only.
Screened the prompt for personal and client data
Employer name redacted before dispatch; the memo keeps its own name.
Ran the citation gates
Match-set, quote-verbatim, confidence-floor, closed-world-url. 1 finding.

The URL gate, one of four that every citation passes.

Shaped for the reader

Executive Brief, Work-Stream Memo, Client Update, Court-Ready or Regulator Response, then Word, Slides, Spreadsheet or PDF. Citations follow OSCOLA, OSCOLA-Ireland, Bluebook or your firm's house style. The same research, written for whoever has to act on it, without a fee-earner rewriting it by hand.

See research and chat

Agents · Contract Agent · New runMatter: Northgate · senior associate hire

Agent

Jurisdiction

Prepare for

Deliver as

Instruction

What should the agent look for?

Documents

Drop a contract, or pick one from the matter

Also on the matter