# Best AI Legal Assistant Software with Legal Due Diligence Capabilities

## How Many AI Legal Assistant Software Products Does G2 Track?

**Total Products under this Category:** 137

### Category Stats (Aug 2026)

- **Average Rating:** 4.68/5 (↑0.01 vs Jul 2026) The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** Litmas AI (+12.5%) - Among all products in this category, Litmas AI recorded the largest rating increase compared to last month

_Last updated: August 04, 2026_

## How Does G2 Rank AI Legal Assistant Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 4,100+ Authentic Reviews
- 137+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

## G2 Grid® for AI Legal Assistant Software
 ![G2 Grid® for AI Legal Assistant Software plotting products by satisfaction and market presence](https://www.g2.com/categories/ai-legal-assistant/grids.png?focus%5B%5D=22198&focus%5B%5D=1444264&focus%5B%5D=94856&focus%5B%5D=7602&focus%5B%5D=7588&focus%5B%5D=1458980&focus%5B%5D=7673&focus%5B%5D=1335912)

Highlighted products: Rev, Supio, CoCounsel Legal, Relativity, Everlaw, Spellbook, Filevine, and Eve Legal.

Underlying data: [Grid® JSON](https://www.g2.com/categories/ai-legal-assistant/grids.json?focus%5B%5D=rev&focus%5B%5D=supio&focus%5B%5D=cocounsel-legal&focus%5B%5D=relativity&focus%5B%5D=everlaw&focus%5B%5D=spellbook&focus%5B%5D=filevine&focus%5B%5D=eve-legal)

**Sponsored**

### Assembly Neos

Neos is personal injury case management software with intelligence built into every case file. It combines embedded intelligence, workflow automation, case and document management, native intake, and real-time dashboards to help firms handle more cases and drive better results for their clients. Neos has been consistently recognized as a G2 Leader in Legal Case Management, and its built-in AI, NeosAI, won the 2025 LegalTech Breakthrough Award for LegalTech Generative AI Solution of the Year. Key Features & Benefits Embedded Intelligence: Unlimited AI can generate documents, create summaries, extract and auto-populate data into Neos fields, and seamlessly analyze and compare documents, plus capture immediate answers to case questions, saving your firm up to 75 hours per week. Collaboration & Communication: In-app calling, texting, emailing, and calendar management with full communication tracking. Streamlined Intake: Customizable intake forms, 24/7 intake, and AI-powered data extraction directly into case fields for a seamless transitions into a case. Secure Anywhere Access: Role-based permissions, encryption, and Microsoft Azure-backed AI with no third-party retention. Document Management: AI-enabled generation, templates, bulk sending, and full-text and OCR-enabled search across case files. Real-Time Insights: Custom dashboards, automated reporting, and performance audits to reduce per-case cost. Rich Integrations: Works with RingCentral/Zoom Phone, QuickBooks®, Office 365®, DocuSign®, LawToolBox, and more. Training & Support: 95%+ customer satisfaction, fast ticket resolution, and on-demand training resources. Neos has evolved and will continue to disrupt and transform the legal sector to meet the changing needs of modern law firms. Learn more at https://www.assemblysoftware.com/neos

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1009064&secure%5Bchosen_at%5D=2026-08-12T18%3A24%3A19Z&secure%5Bdisplayable_resource_id%5D=1009064&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1009064&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1237231&secure%5Bresource_id%5D=1009064&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fai-legal-assistant%2Ff%2Flegal-due-diligence&secure%5Btoken%5D=ac15db2d5af9afcdea99a91bd96eaf565a0055dbcf94111ae5763edae0066b5b&secure%5Burl%5D=https%3A%2F%2Fwww.assemblysoftware.com%2Fneos%3Futm_source%3Dg2%26utm_medium%3Dreferral%26utm_campaign%3Dg2-clicks-consultation-q2-2026&secure%5Burl_type%5D=custom_url)

### [Legal-Grade™ AI](https://www.g2.com/products/legal-grade-ai/reviews)

Luminance’s Legal-Grade™ AI automates and augments every touchpoint a business has with its contracts. Its Mixture of Experts approach - known as the “Panel of Judges” - uses probabilistic consensus to ensure legal-grade accuracy during contract generation, negotiation and post-execution analysis. Trusted by over 700 customers in 70+ countries including a quarter of the world’s largest law firms and multinational organisations across industries, from AMD and National Grid to LG Chem and DHL, Luminance’s end-to-end platform brings specialist AI to wherever computer meets contract.

**Average Rating:** 4.9/5.0

**Total Reviews:** 5

#### Who Is the Company Behind Legal-Grade™ AI?

- **Seller:** [Luminance Technologies Ltd.](https://www.g2.com/sellers/luminance-technologies-ltd)
- **Year Founded:** 2015
- **HQ Location:** Cambridge, GB
- **Twitter:** @LuminanceTech  
2,833 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=97d8dd13bb5c979737fef7ba8639b2aad665000d4940ebe84296a94e5e30be8b&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fluminancetech&secure%5Burl_type%5D=linkedin_company_website)  
446 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 80% Large, 20% Small

#### What Are Recent G2 Reviews of Legal-Grade™ AI?

**["Excellent contracting platform"](https://www.g2.com/survey_responses/legal-grade-ai-review-10077420)**

**Rating:** 5.0/5.0 stars

_— Rohit S._

[Read full review](https://www.g2.com/survey_responses/legal-grade-ai-review-10077420)

**["Bridging Technology and Trademark Law"](https://www.g2.com/survey_responses/legal-grade-ai-review-10059613)**

**Rating:** 5.0/5.0 stars

_— Verified User in Luxury Goods & Jewelry_

[Read full review](https://www.g2.com/survey_responses/legal-grade-ai-review-10059613)

### [Litera Kira](https://www.g2.com/products/litera-kira/reviews)

Kira is an AI-powered contract intelligence platform, enabling legal teams to analyze contracts with proven accuracy, flexible governance controls, and purpose-built workflows for high-volume review. Built on 30 years of legal expertise and refined through a decade of AI innovation, Kira delivers battle-tested precision with hybrid AI architecture.​ In Contract Review, “Close Enough Isn’t Good Enough” 90%+ accuracy with hybrid AI across 1,400+ proprietary AI fields End-to-end contract review with built-in legal collaboration Governance-first AI, with GenAI controls you can toggle on or off One connected legal tech ecosystem for drafting, transactions, and knowledge Contract Intelligence That Scales with Your Team Enterprise and Large Law Firms Accelerate high‑volume, high‑stakes contract review with 90%+ accuracy, collaborative workflows, and governance controls that help large firms reduce risk and deliver results faster​ Corporate Legal Departments Streamline corporate contract review with simple, accurate hybrid AI and intuitive workflows that reduce risk, speed deal cycles, and support compliance‑ready governance Small Law Firms Work like big firms by delivering fast, accurate contract review through intuitive, scalable AI workflows, without adding headcount

**Average Rating:** 4.3/5.0

**Total Reviews:** 10

#### Who Is the Company Behind Litera Kira?

- **Seller:** [Litera](https://www.g2.com/sellers/litera)
- **Year Founded:** 1995
- **HQ Location:** Chicago, Illinois
- **Twitter:** @Litera\_AI  
1,659 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=184bfa0107bcf418991b0676ea1286e1e247794cfd582803540753001cb34a56&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fliteramicrosystems%2F&secure%5Burl_type%5D=linkedin_company_website)  
1,550 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 400% Small, 300% Large

#### What Are Recent G2 Reviews of Litera Kira?

**["Cloud based contract management software"](https://www.g2.com/survey_responses/litera-kira-review-6882450)**

**Rating:** 4.5/5.0 stars

_— Pragy J._

[Read full review](https://www.g2.com/survey_responses/litera-kira-review-6882450)

**["Kira document analysis app"](https://www.g2.com/survey_responses/litera-kira-review-7828524)**

**Rating:** 5.0/5.0 stars

_— Manmohan S._

[Read full review](https://www.g2.com/survey_responses/litera-kira-review-7828524)

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Below are the top-rated AI Legal Assistant Software with Legal Due Diligence capabilities, as verified by G2’s Research team. Real users have identified Legal Due Diligence as an important function of AI Legal Assistant Software. Compare different products that offer this feature so you can decide which is best for your business needs.

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