Best AI tools to draft and review contracts

Short answer

Spellbook ranks #1 for draft and review contracts (score 8.9/10). Pricing: Custom (book a demo); free tier: 7-day trial. Runners-up: Claude, Ironclad.

Top 5, ranked by our published rubric. Sponsorship never affects the order. Last updated 2026-10-13.

Compare the top 5 side by side

#	Tool	Score	Pricing	Paid from	Free tier	What it is
1	Spellbook	8.9	Custom	Custom (book a demo)	7-day trial	AI contract drafting in Word
2	Claude	8.2	Free tier	$17/mo billed annually ($20 monthly)	yes	General AI assistant by Anthropic
3	Ironclad	7.8	Custom	Custom (contact sales)	no	Contract lifecycle management
4	Harvey	6.3	Custom	Custom pricing (contact sales)	no	AI for law firms
5	Docusign	6.0	From $11	Personal $11/mo, annual commitment ($132/yr)	no	E-signature and agreements

Rank 1

Spellbook

CustomVisit Spellbook (opens in a new tab)

AI contract drafting in Word

Score 8.9/10Paid from: Custom (book a demo)Free tier: 7-day trialLast verified 2026-10-13

Why ranked: Its own site says: “Spellbook is the #1 AI contract review platform for transactional lawyers.” We placed it 1st of 5 on fit for this task. No public price (sales-led).

Fit 10.0 · value 5.6 · breadth 10 · availability 10 (how we score) · pricing source · site live

Rank 2

Claude

Free tierVisit Claude (opens in a new tab)

General AI assistant by Anthropic

Score 8.2/10Paid from: $17/mo billed annually ($20 monthly)Free tier: yesLast verified 2026-10-13

Why ranked: Its own site says: “No commitment · Cancel anytime Everything in Free, plus: More usage Hand off tasks and get back finished docs, slides, sheets, and designs Claude Code Claude Science Projects More Claude models Claude in Chrome and Microsoft 365 Max ” We placed it 3rd of 5 on fit for this task. Free tier; paid from $17/mo billed annually ($20 monthly).

Fit 7.0 · value 10.0 · breadth 10 · availability 7 (how we score) · pricing source · site bot-blocked (403)

Rank 3

Ironclad

CustomVisit Ironclad (opens in a new tab)

Contract lifecycle management

Score 7.8/10Paid from: Custom (contact sales)Free tier: noLast verified 2026-10-13

Why ranked: Its own site says: “Design and deploy any type of contract in minutes.” We placed it 2nd of 5 on fit for this task. No public price (sales-led).

Fit 8.5 · value 4.4 · breadth 10 · availability 10 (how we score) · pricing source · site live

SPONSORED Your tool here: paid placement is shown here, separate from the ranking, and never changes the order. Advertise

Rank 4

Harvey

CustomVisit Harvey (opens in a new tab)

AI for law firms

Score 6.3/10Paid from: Custom pricing (contact sales)Free tier: noLast verified 2026-10-13

Why ranked: Its own site says: “Legal AI tailored for leading law firms and corporate legal teams worldwide.” We placed it 4th of 5 on fit for this task. No public price (sales-led).

Fit 5.5 · value 4.4 · breadth 10 · availability 10 (how we score) · pricing source · site live

Rank 5

Docusign

From $11Visit Docusign (opens in a new tab)

E-signature and agreements

Score 6.0/10Paid from: Personal $11/mo, annual commitment ($132/yr)Free tier: noLast verified 2026-10-13

Why ranked: Its own site says: “Create, commit to, and manage your agreements all in one platform with Docusign IAM.” We placed it 5th of 5 on fit for this task. No free plan confirmed; paid from Personal $11/mo, annual commitment ($132/yr).

Fit 4.0 · value 6.2 · breadth 10 · availability 10 (how we score) · pricing source · site live

FAQ

What is the best AI tool to draft and review contracts?

By TaskRanking's published rubric, Spellbook ranks first, followed by Claude and Ironclad.

Is there a free AI tool to draft and review contracts?

Yes: Claude has a free tier per its own pricing page (checked 2026-10-13).

How are these tools ranked?

Score = 50% fit, 25% value (from vendor pricing pages), 15% breadth, 10% availability. Sponsorship never affects rank.