Microsoft Copilot vs Gavel Exec: Legal AI Compared (2026)
Microsoft Copilot vs. Gavel Exec (2026): Which AI Contract Review Tool Is Right for Your Legal Team?
Microsoft Copilot is a general AI productivity add-on for Microsoft 365, now with a Legal Agent for Word contract review in public preview since April 2026. Gavel Exec is a purpose-built contract review, redlining, and playbook platform with a native Word add-in and full web app. Copilot costs $30/user/mo as an annual add-on (an eligible M365 subscription is required separately) with no free trial. Gavel Exec costs $160/seat/mo with no commitment and 25 free queries per user to start.
By Danae Martin · Last updated: June 16, 2026
Microsoft Copilot is a general AI productivity add-on for Microsoft 365, with a Legal Agent for contract review in Frontier Public Preview on Windows desktop only. Gavel Exec is a purpose-built contract review, redlining, and playbook platform with a native Word add-in on Mac, Windows, and the web, plus a dedicated web application.
Gavel Exec is the better fit for legal teams that need a purpose-built review platform available today, on Mac, Windows, and the web, with a free trial and no annual commitment.
Key differences
- Availability: Microsoft Copilot’s legal contract features (Legal Agent) are a Frontier preview limited to Word for Windows desktop and US tenants; Gavel Exec is generally available on Mac, Windows, Word for the web, and a full web app.
- Contract-specific AI: Outside the preview, Copilot offers general Word drafting assistance without contract-specific review or redlining; Gavel Exec is purpose-built for contract review, redlining, and drafting.
- Playbooks: Copilot ingests an uploaded playbook as AI skill instructions in preview; Gavel Exec generates playbooks from a contract type, ships lawyer-written defaults, and lets any lawyer edit them without admin.
- Benchmarking and batch analysis: Copilot offers neither; Gavel Exec supports clause benchmarking and batch analysis across multiple contracts.
- Trial and pricing: Copilot requires an annual commitment and a base Microsoft 365 license on top of the $30/user/mo add-on, with no free trial; Gavel Exec is $160/seat/month month-to-month with 25 free queries and no sales call.
Side-by-side comparison
| Feature | Microsoft Copilot | Gavel Exec |
|---|---|---|
| Price | ✓ $30/user/mo add-on (annual; base M365 license required separately) | ✓ $160/seat/month, or $1,740/seat/year billed annually |
| Billing | ✗ Annual commitment required | ✓ Month-to-month, no long-term commitment required |
| Free Trial | ✗ No free trial for Copilot license | ✓ 25 free queries per user -- no credit card, no sales call |
| AI Features | ✓ Contract review, redline generation, playbook comparison (Legal Agent, Frontier preview, Windows desktop only) | ✓ AI contract review, redlining, drafting, playbooks, benchmarking, batch analysis, multi-document comparison |
| Playbooks | ✓ Available in Legal Agent (Frontier preview); playbook ingested as AI skill instructions; not generally available | ✓ AI-generated from contract type or practice area; built-in lawyer-written defaults; any lawyer can edit without admin; granular access controls |
| Word Integration | ✓ Word for Windows desktop (Legal Agent); ✗ Mac and Word for the web not supported for legal features | ✓ Native Word add-in + full web application |
| Support | ✓ Microsoft 365 standard support included; enterprise support plans available separately | ✓ Live chat, support calls, help center, and onboarding |
Security and data privacy
Microsoft 365 Copilot is covered by Microsoft's enterprise data protection commitments, which restrict customer data from being used to train foundation models. Gavel Exec's protection is contractual. Gavel holds formal Zero Data Retention agreements with all AI providers, contractually guaranteeing that no contract data is stored, used for training, or retained after a session ends. Gavel Exec is also SOC 2 Type I certified, independently audited against the AICPA Trust Services Criteria for security, availability, and confidentiality.
Pricing
Microsoft Copilot: $30/user/mo add-on, annual commitment
- Legal Agent for Word (Frontier preview): contract review, playbook comparison, tracked-change redlines
- General Copilot: AI assistance across Word, Excel, Outlook, and Teams
- $30/user/mo, billed annually ($360/seat/year)
- Annual commitment required; no free trial
- Requires an existing eligible Microsoft 365 subscription (Business Standard, E3, or E5) purchased separately
- Legal Agent available on Word for Windows desktop only; US-based tenants in Frontier program
Gavel Exec: $160/seat/mo, month-to-month
- Native Word add-in (Mac, Windows, and Word for the web) and full web application
- Contract review, redlining, drafting, playbooks, benchmarking, batch analysis, multi-document comparison, research tools
- $160/seat/mo, or $1,740/seat/year billed annually
- No long-term commitment required
- 25 free queries per user, no credit card, no sales call
- Team discounts for 10+ seats and for existing Gavel Workflows customers
Frequently asked questions
What is the biggest difference between Microsoft Copilot and Gavel Exec?
Gavel Exec is a purpose-built contract review, redlining, and playbook platform. Microsoft Copilot is a general productivity add-on for Microsoft 365 that now includes a Legal Agent for contract review in Frontier Public Preview, available on Word for Windows desktop only. The most concrete differences: no free trial for Copilot, annual commitment required, legal features limited to Windows desktop, and no batch analysis or dedicated web application.
Does Microsoft Copilot require a Microsoft 365 subscription?
Yes. The Copilot add-on requires an existing eligible Microsoft 365 Business or Enterprise subscription purchased separately. Teams without M365 must add that cost. Accessing the Legal Agent also requires enrollment in Microsoft's Frontier program, which Microsoft manages on a rolling basis for US-based tenants. Gavel Exec requires no existing subscription, no licensing approval, and no sales call to start.