Proviso is a productivity multiplier for in-house transactional lawyers. Review contracts faster, catch more issues, and work more effectively — without leaving Microsoft Word.
Proviso isn't a general legal AI. It's a purpose-built tool for transactional practitioners — designed to make you more efficient and effective on every contract you touch.
Open an NDA, vendor MSA, SaaS agreement, or M&A document — Proviso identifies it and applies the right review playbook automatically. No configuration needed.
Proviso works as an intelligence layer on top of leading AI models — whether you bring your own API key or we manage the LLM for you. Either way, we never store your contract text. Your data stays between you and the model.
No browser tab switching. No copy/paste. Proviso runs as a Word add-in — open the taskpane, click Review, and get a structured risk assessment without leaving your document.
Designed around the contracts transactional lawyers actually touch — NDAs, vendor agreements, SaaS contracts, and acquisition documents. Understands indemnification caps, auto-renewal traps, and liability carve-outs — the issues that matter to experienced practitioners.
Beyond review — draft fallback clauses and suggest redlines on specific provisions. Everything stays inside the contract you're working on.
Ask free-form questions about any open contract and get plain-English answers in seconds. Proviso automatically suggests relevant questions based on contract type — so you always know where to start.
Every in-house legal team negotiates NDAs differently. NDA Calibrate lets you teach Proviso exactly how you work — upload 3 NDAs you've negotiated and like, answer a few questions about your positions, and Proviso builds a personalized review playbook from your preferences.
From that point on, every NDA review reflects your standards. Flags provisions that don't belong — non-solicits, IP grabs, residuals clauses — the stuff that slips into NDAs and shouldn't. Not generic best practices. Not some outside counsel's template. Yours.
NDA Calibrate is the first in a growing suite of calibration tools — more contract types coming.
If you have an LLM API key (Anthropic, OpenAI, or similar), plug it in and your reviews cost ~$0.01–0.05 each — paid directly to your provider. Don't know what an LLM API key is? No problem. That's what the Managed plan is for.
No IT department required. No annual contract. No vendor lock-in.
Open any contract in Microsoft Word — existing files, email attachments, any format. Proviso auto-detects the contract type and loads the right playbook.
Pick what you need — full review, a quick summary, a targeted question, or a specific clause. Proviso handles all of it from the same taskpane.
Structured risk tables, plain-English summaries, targeted clause analysis, or direct answers to your questions — all negotiation-ready, right in your document.
Real scenarios from in-house legal teams. Real output. Nothing staged.
Four specialized agents review your contract simultaneously. By the time you pour your coffee, it's done.
Each playbook is a purpose-built framework, not a generic prompt. Select by contract type or let Proviso auto-detect.
See what Proviso saves compared to outside counsel — or just doing it yourself.
Most legal AI platforms are venture-funded — which means their roadmaps follow investor expectations and enterprise growth targets, not yours. Proviso is bootstrapped and independent: built by in-house practitioners and law firm partners, improved based on what makes contract review faster and smarter. Nothing else drives what we build.
| Feature | Proviso | GC AI | Spellbook | Harvey |
|---|---|---|---|---|
| Price & Access | ||||
| Starting price | $29/mo (BYOK) · $49/mo (Managed) | ~$500/user/mo | ~$179/user/mo | Custom (enterprise only) |
| Minimum commitment | None — month to month | Annual contract | Annual contract | Multi-year enterprise deal |
| Time to first review | Under 5 minutes | Sales demo required | Demo required | Weeks (implementation) |
| Bring your own API key (BYOK) | ✓ Only option with BYOK | — | — | — |
| Contract Intelligence | ||||
| Works inside Microsoft Word | ✓ | ✓ | ✓ | ✓ |
| Pre-built playbooks by deal type | 25 playbooks (NDA, SPA, APA, DPA, Employment, JV + more) | Templates (limited) | ~12 templates | Custom only |
| Learns your specific redline preferences over time | ✓ NDA Calibrate — preference-based review | General context only | Writing style only | — |
| NDA Calibrate — train on your own NDAs | ✓ | — | — | — |
| Reference database: real transactional contracts | ✓ Included | — | — | Partial |
| Built specifically for in-house transactional lawyers | ✓ | ✓ | Law firms primarily | BigLaw & Fortune 500 only |
| Company & Roadmap | ||||
| Funding model | Bootstrapped — no outside investors | Venture-backed | VC-backed | Venture-backed |
| Who drives the product roadmap | In-house lawyers who use it daily | Investor board & enterprise sales | VC growth targets | BigLaw partners & investors |
Enterprise legal AI was priced for partners billing $800/hr. Proviso was built by practitioners, priced for practitioners — and it outperforms tools that cost 10x more.
No one beats Proviso on price or functionality. Period.
Built by in-house practitioners and law firm partners — not a sales team chasing enterprise deals. We ship faster, improve constantly, and charge less. Try to find a better deal. You won't.
An incredibly powerful tool for practitioners. More efficient, more effective, more confident — on every contract you review.
Start your Proviso subscription or join the early access list.