hubai.uk Decision Room
NEWWhat AI should I use?Job + team size + goal → stack, risk and ROIBuild mine
250+ PEOPLE · UPDATED 7 SEPTEMBER 2026

Best AI stack for large company legal services

Treat the stack as a controlled programme: five capability roles, executive sponsorship, security review and benchmark evidence before procurement.

SECTORLegal services
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SCALE250+ people
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FIRST JOBResearch and analyse matters inside an approved legal workspace.
=STARTING ROUTE90-day controlled programme
BUY IN THIS ORDER

Each subscription needs a distinct job.

The order is an editorial starting point. It changes when your first priority, existing software or data controls change.

PILOT FIRST01
SBLegal AI

Spellbook

8.5/10

Review contract language and surface negotiation points.

WHY IT FITS
A focused contract copilot for legal professionals who want AI inside the document workflow, with every clause and suggestion remaining subject to lawyer review.
ACCESS
Demo or trial request
PRICE STRUCTURE
Paid professional plans
WATCH
Professional paid product
TEST TOGETHER02
HVLegal AI

Harvey

8.7/10

Research and analyse matters inside an approved legal workspace.

WHY IT FITS
A serious enterprise legal AI platform for firms that can support procurement, security review and lawyer-led validation; it is not a consumer legal-advice shortcut.
ACCESS
Sales-led evaluation
PRICE STRUCTURE
Enterprise pricing
WATCH
Enterprise access only
ADD AFTER PROOF03
CLText AI

Claude

9.3/10

Summarise long documents and prepare first drafts.

WHY IT FITS
A premium choice for thoughtful writing, synthesis and long-context work where tone and structure matter.
ACCESS
Free tier
PRICE STRUCTURE
Free; Pro and Team plans
WATCH
Tool ecosystem differs by region
ADD AFTER PROOF04
GRWriting AI

Grammarly

8.7/10

Apply plain-language and tone checks to client communication.

WHY IT FITS
A dependable writing layer that meets people where they already type, rather than asking every task to begin in a chatbot.
ACCESS
Free plan; Pro trial may apply
PRICE STRUCTURE
Free; Pro around €12/month on current UK locale
WATCH
Can flatten individual voice
ADD AFTER PROOF05
CGText AI

ChatGPT

9.5/10

Create internal checklists from approved precedents.

WHY IT FITS
The strongest general-purpose AI counter for broad daily use, especially when writing, analysis, coding and image understanding need to live in one place.
ACCESS
Free tier
PRICE STRUCTURE
Free; Plus and Team plans
WATCH
Best capability depends on plan
CHANGE THE PRIORITY

One sector. Five different first buys.

Save timeSpellbook

Automate repeatable work

Open verdict →
Grow revenueGrammarly

Create and convert demand

Open verdict →
Serve customersClaude

Respond with more consistency

Open verdict →
Make decisionsHarvey

Research and analyse evidence

Open verdict →
Build productsChatGPT

Prototype and ship faster

Open verdict →
WHAT NOT TO BUY YET

Avoid multi-year commitments, autonomous high-impact actions and vendor lock-in before security and exit controls are tested.

IMPLEMENTATION BLUEPRINT

90-day controlled programme, four accountable moves.

  1. 01DefineOne repeated output, a baseline and the person accountable.
  2. 02TestUse representative work, real constraints and a limited user group.
  3. 03MeasureCount acceptance, correction time, spend and risk exceptions.
  4. 04DecideBuy, revise or stop. Add seats only when the proof survives review.
Enterprise quote only after benchmarkProcurement, security, legal and the workflow owner can defend the evidence, controls and complete-task economics.
DIRECT ANSWERS

Before this company buys AI.

01How many AI tools should a large company legal services team start with?+

HubAI recommends 5 distinct tool roles for this scale. Start with the first workflow and add the remaining tools only when each removes a measured bottleneck.

02What should legal services measure during the pilot?+

Track accepted outputs, human correction time, complete-task cost, user adoption and any data or rights incident. Raw generation volume is not evidence of value.

03Should this company buy annual AI plans immediately?+

No. Avoid multi-year commitments, autonomous high-impact actions and vendor lock-in before security and exit controls are tested. Verify current pricing and contract terms directly with each provider before purchase.