ac-co.ai
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AI legal workspace · grounded in your documents

Legal AI that cites its sources.

ac-co.legal reads your contracts and answers with the clause it came from — every time. Ask questions, get redlines applied as real tracked changes, run UK diligence playbooks, assemble drafts from vetted templates, and match invoices to the contracts they bill against. Full workspace on the web, and the same AI inside Microsoft Word. Powered by the most powerful AI models.

Explore the surfaces
Org-scoped · row-level isolation · your data isn't trained on
BUILT FORIn-house teamsLaw firmsFounders & opsFinance & procurementAdvisors
Project Atlas — Share Purchase Agreement.docx
Project Atlas · SPA
grounded
Is the Seller's liability capped, and what's carved out?
Yes. Clause 9.2 caps the Seller's aggregate liability at the Purchase Price (£4.2m). Fraud and wilful misconduct are carved out under 9.4, and the Tax Covenant in Schedule 5 sits outside the cap.12
1
Clause 9.2 — Limitation of Liability
"…the Seller's aggregate liability under this Agreement shall not exceed the Purchase Price."
2
Clause 9.4 — Exclusions
"Nothing in this Agreement limits liability for fraud or wilful misconduct."
Clause 9.2 — proposed redlinetracked change
…the Seller's aggregate liability under this Agreement shall not exceed the Purchase Pricethe Purchase Price (other than under the Tax Covenant, which shall be uncapped)…
Aligns the cap with the carve-out you flagged in 9.4.
Ask about this document…↑
Cites every answer
Wired into
Microsoft Word · add-inCompanies House · filingse-sign · hand-offSharePoint · documentsOutlook · intakeDOCX / PDF · exportMost powerful models · grounded
0
web surfaces, plus Word
Assistant · Matters · Reviews · Workflows · Contracts · Templates
0
built-in UK legal playbooks
diligence checklists & review templates
0
UK contract templates
fill variables, generate, export
0%
of answers are grounded & cited
traceable to your documents
ONE WORKSPACE

Six surfaces for the whole legal job — plus a few more.

From a first question to a signed contract: ask, organise, review, draft, template — and now match invoices to the contracts they bill against. Everything grounded in your documents.

Assistant
Document-grounded chat
Ask about your contracts; answers return with [N] citations into the actual text. Proposes inline redlines you Accept/Reject, with a side-by-side viewer that highlights every citation.
Matters
A workspace per deal
Tabbed Documents / Assistant / Reviews, nested drag-drop folders, inline rename and bulk actions. Everything for one matter in one place.
Tabular reviews
Diligence grids
Rows are documents, columns are your questions. Each cell returns an indicative red/amber/green flag, the extracted answer, the reasoning and verbatim citations — a whole data room in one pass, for your review.
Workflows
14 UK playbooks
Built-in UK legal checklists and review templates, plus your own. Run one over a document and route the output to the assistant or a tabular review.
Contracts
Template-led drafting
Brief → Plan → Draft → Review. Start from a vetted UK template, set the parties and key terms, and assemble a working draft from trusted precedents — every clause is yours to edit, and a lawyer reviews before it's used. Rich editor with a / slash menu, drag-to-reorder, and one-click export to DOCX / PDF.
Templates
15 UK templates
A library of UK contract templates — fill the variables (with "Suggest with AI") and generate in seconds.
InvoicesNew
Invoice ↔ contract matching
Intelligently match incoming invoices to the active contract they bill against, compare the amount and terms against the clause, and flag potential overcharges or scope drift for review. New.
NegotiationsNew
Position & intent tracking
Follow a deal across drafts: each side's position on every key term, the history of who moved and when, and an indicative read on where the counterparty is likely to land. New.
Company analysis
Companies House summary
Pull a counterparty's public Companies House filings into a streamed financial summary before you sign. Informational only — not a regulated credit reference.
HOW IT WORKS

From connected to filed, in four moves.

01

Bring your documents

Drag contracts into a Matter — nested folders, inline rename, bulk actions. Everything for one deal in one place.

02

Ask, grounded

Chat cites the exact clause it answered from. Run a tabular review to flag a whole data room in one pass.

03

Redline & draft

AI proposes tracked changes you Accept/Reject, and assembles a working draft from your templates and precedents for you to review — Brief → Plan → Draft → Review.

04

Match, sign & file

Match invoices to the active contract, send for e-signature, and file everything back to the matter.

GROUNDED, NOT GUESSING

Every answer cites the clause it came from.

ac-co.legal never hand-waves. Each response carries [N] citations that jump to the exact text in your document, with the verbatim quote alongside — so you can trust it, and show your working.

  • Inline [N] citationsClick a citation to highlight the source clause in the side-by-side viewer.
  • Verbatim quotesThe actual words from the document, not a paraphrase you have to go and check.
  • Side-by-side viewerAnswer on one side, the contract on the other, citations linking the two.
  • TraceableThe grounding is your audit trail — every answer traces back to a clause you can check.
Project Atlas — Share Purchase Agreement.docx
Project Atlas · SPA
grounded
Is the Seller's liability capped, and what's carved out?
Yes. Clause 9.2 caps the Seller's aggregate liability at the Purchase Price (£4.2m). Fraud and wilful misconduct are carved out under 9.4, and the Tax Covenant in Schedule 5 sits outside the cap.12
1
Clause 9.2 — Limitation of Liability
"…the Seller's aggregate liability under this Agreement shall not exceed the Purchase Price."
2
Clause 9.4 — Exclusions
"Nothing in this Agreement limits liability for fraud or wilful misconduct."
Clause 9.2 — proposed redlinetracked change
…the Seller's aggregate liability under this Agreement shall not exceed the Purchase Pricethe Purchase Price (other than under the Tax Covenant, which shall be uncapped)…
Aligns the cap with the carve-out you flagged in 9.4.
Ask about this document…↑
REDLINES THAT LAND

AI edits applied as real tracked changes .

Proposed redlines aren't suggestions in a chat window — they're applied as genuine tracked changes you Accept or Reject, in the web editor or natively in Word's Review pane.

  • Accept / RejectReview each change like any tracked edit — keep, tweak or discard.
  • Native in WordThe add-in writes real Word tracked changes into the document you have open.
  • Clause-awareEdits respect defined terms, numbering and cross-references across the contract.
  • Amend flowRe-open a drafted contract and have the AI mark up changes against the prior version.
Project Atlas — Share Purchase Agreement.docx
Project Atlas · SPA
grounded
Is the Seller's liability capped, and what's carved out?
Yes. Clause 9.2 caps the Seller's aggregate liability at the Purchase Price (£4.2m). Fraud and wilful misconduct are carved out under 9.4, and the Tax Covenant in Schedule 5 sits outside the cap.12
1
Clause 9.2 — Limitation of Liability
"…the Seller's aggregate liability under this Agreement shall not exceed the Purchase Price."
2
Clause 9.4 — Exclusions
"Nothing in this Agreement limits liability for fraud or wilful misconduct."
Clause 9.2 — proposed redlinetracked change
…the Seller's aggregate liability under this Agreement shall not exceed the Purchase Pricethe Purchase Price (other than under the Tax Covenant, which shall be uncapped)…
Aligns the cap with the carve-out you flagged in 9.4.
Ask about this document…↑
INVOICES ↔ CONTRACTS · NEW

Invoices matched to the contract they bill against.

Procurement and finance never have to guess which contract an invoice belongs to. ac-co.legal matches each incoming invoice to the active contract, compares the amount, rate and scope against the governing clause, and flags anything that looks off for review.

  • Intelligent matchingEach invoice paired to the right active contract by counterparty, reference and terms.
  • Compared against the clauseAmount, rate and frequency compared against the fee schedule and the cited clause.
  • Discrepancies flaggedIndicative red/amber/green on every invoice — possible overcharges, duplicates and scope drift surfaced for review.
  • Cited, like everything elseEach flag points to the exact contract clause it was judged against.
Invoice ↔ contract
Possible overcharge · review
Invoice
INV-2025-118
Hartwell Consulting Ltd
£14,400
↔
Active contract
MSA — Hartwell Consulting
Schedule 2 · Fees — £12,000 / month
!Invoice appears to exceed the agreed monthly fee by £2,400 (20%) and no change order is on file. Flagged for your review — not a determination.
WHERE LAWYERS ALREADY WORK

The same AI, inside Microsoft Word .

A task pane with eight tabs, all operating on the document you have open — Ask, Review, Edit, Tabular, Compare, Matters, Draft and Templates. "Continue in browser" deep-links any document straight into the web editor.

  • Ask & ReviewGrounded chat and UK playbook reviews, with one-click tracked-change fixes.
  • Edit & CompareImprove / shorten / formalise a selection; diff against another version and adopt wording.
  • Draft & TemplatesTemplate-led drafting and the template library, assembling a working draft straight into your document.
  • MattersFile the open document into a matter without leaving Word.
WProject Atlas — Share Purchase Agreement.docxac-co.legal · task pane
↑ tracked change
Ask — on the open document
Grounded chat over the open document, with [N] citations and proposed tracked-change redlines.
NEGOTIATION TRACKING · NEW

Track every position, move and likely intent.

ac-co.legal follows a deal across drafts — capturing each side's position on every key term, the full history of who moved and when, and an AI read on where the counterparty is likely to land. Grounded in the document versions, like everything else.

  • Positions side by sideYour position and theirs on every negotiated term, version by version.
  • Full historyEvery move tracked — who changed what, when, and against which draft.
  • Likely intentAn AI read of the counterparty's direction and probable landing zone — clearly indicative, not advice.
  • GroundedEvery position traces back to the clause and version it came from.
Negotiation · Project Atlas
round 1 / 4negotiating
TermYouThem
Liability cap1× Purchase Price→3× Purchase Price
Warranty period12 months→24 months
Restrictive covenant24 months→6 months
History
v1YouOpening positions tabled
Likely intent · indicative

The counterparty has moved ~0.5× on the cap each round and conceded the covenant. Likely to settle near a 1.5× cap and 18-month warranties — both inside your walk-away range. Indicative only.

PRICING

One price per user — the whole workspace.

Per user, billed monthly — cancel anytime. Annual and firm-wide pricing available.

Team
In-house & small firms
£49/ user / month

The full web workspace — grounded assistant, matters, reviews, drafting and templates.

Start a trial
  • ✓All six web surfaces
  • ✓14 UK playbooks · 15 templates
  • ✓Grounded chat with citations
  • ✓Redlines & DOCX/PDF export
  • ✓Org-scoped, row-level isolation
Firm
Most legal teams
Most picked
£89/ user / month

Everything in Team, plus the Word add-in, invoice matching and company analysis.

Start a trial
  • ✓Everything in Team, plus:
  • ✓Microsoft Word add-in
  • ✓Invoice ↔ contract matching
  • ✓Companies House summaries
  • ✓e-sign hand-off
  • ✓SSO / SCIM & audit log
Enterprise
Firms & large in-house
Custom

For practices at scale — private deployment, custom playbooks and named onboarding.

Talk to us
  • ✓Custom playbooks & templates
  • ✓Private / VPC deployment
  • ✓Custom data residency
  • ✓Bulk seat management
  • ✓Named onboarding & SLA
TRUST

We file in your name, so we hold ourselves to the highest bar.

ac-co is HMRC-recognised software submitting through the official API. Connections to your bank and books are read-only. Every figure traces to a source, and every receipt is stored for six years.

Row-level isolation
per organisation
UK GDPR
data resident in the UK
No training
on your documents
Human-in-loop
a lawyer reviews before it's used
Data encrypted
at rest and in transit
SSO / SCIM
& audit log
FAQ

Questions people actually ask.

Every answer ac-co.legal gives is tied to the specific clauses it read, shown as [N] citations you can click to highlight the source text. It won't assert something your documents don't support — and when it's unsure, it says so rather than guessing.

Proposed edits are applied as genuine tracked changes, not chat suggestions. In the web editor you Accept or Reject each one; in Word, the add-in writes native tracked changes straight into the document you have open, ready for Word's Review pane.

ac-co.legal matches each incoming invoice to the active contract it bills against — by counterparty, reference and terms — then compares the amount, rate and frequency against the fee schedule and flags potential overcharges, duplicates or scope drift for your review, citing the governing clause.

Yes. A task pane add-in with eight tabs operates on whatever document you have open — Ask, Review, Edit, Tabular, Compare, Matters, Draft and Templates — and can deep-link any document into the full web editor.

ac-co.legal runs on the most powerful AI models available, selected and tuned for legal reasoning — always grounded against your documents so the output is citable, not speculative.

Every organisation is isolated with row-level security, data stays in the UK and encrypted, and your documents are never used to train models. SSO, audit logging and private deployment are available.

FROM FIRST DRAFT TO SIGNATURE

Draft, review, diligence and sign — in one flow.

Grounded legal AI · on the web and inside Microsoft Word · built for UK law.

Org-scoped · your data isn't trained on · UK data residency
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