BotTasks / Contract review
Best AI tool for contract review
One decision, not a directory. Pricing checked 2026-10-14.
Claude
Anthropic's AI assistant, strong at long documents, writing and coding.
Free tierFree tier; Pro $20/mo ($17/mo billed annually)Writing
- Start a Spellbook free trial and install the Microsoft Word add-in.
- Open the contract in Word and run a review.
- Read the flagged risky or missing clauses and the suggested redlines.
- Accept or adjust each change using your own judgment.
- Have a qualified lawyer approve anything high-stakes before signing.
Why Spellbook
Spellbook works inside Word, where contracts already live, and is built for legal drafting and redlining.
When to choose Claude instead
Choose Claude for a low-cost first read of a contract, especially if you are not a lawyer and want plain-English explanations.
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Pricing at a glance
| Tool | Pricing | Free tier |
|---|---|---|
| Spellbook | Paid plans; 7-day free trial | No |
| Claude | Free tier; Pro $20/mo ($17/mo billed annually) | Yes |
| Harvey | Enterprise pricing | No |
| GitHub Copilot | Free tier, paid from ~$10/mo | Yes |
| CodeRabbit | Paid from $24/user/mo billed annually; free trial | No |
Pricing changes often; check the official site before buying.
FAQ
What is the best AI tool for contract review?
Our pick is Spellbook: AI contract drafting and review in Word. Pricing: Paid plans; 7-day free trial.
When should I choose Claude instead?
Choose Claude for a low-cost first read of a contract, especially if you are not a lawyer and want plain-English explanations.
Does Spellbook have a free plan?
Not a free plan as such. Spellbook: Paid plans; 7-day free trial.