# 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**

### Filevine

Filevine is the pioneer of the Legal Operating Intelligence System, LOIS. While traditional platforms often bolt AI onto legacy frameworks, Filevine embeds intelligence into the core of legal work, providing a unified system of truth where data, documents, and workflows operate with total clarity. From elite litigation firms to complex corporate counsel departments, legal professionals use Filevine to move faster, think strategically, and command better outcomes without the friction of toggling between disconnected tools. By centralizing every matter, contract, and communication, Filevine replaces fragmented chaos with a single source of intelligence. This shift allows teams to move beyond mere task management and into a state of high-performance legal work. Whether drafting complex motions, analyzing discovery, or managing intricate billing cycles, the platform ensures that every action is grounded in the full context of the case. Modern legal teams rely on Filevine to drive consistency and scale: Unified Matter Management: Every document, note, deadline, and communication is housed in one location, ensuring the entire team operates from the same set of facts. Embedded Legal Intelligence: LOIS works behind the scenes to automate drafting, analyze dense discovery files, and surface insights that might otherwise remain buried in data. Operational Clarity: Integrated timekeeping, billing, and payments eliminate the need for third-party plug-ins, creating a seamless financial workflow tied directly to case progress. Strategic Automation: Beyond simple task reminders, the system executes complex workflows that accelerate the journey from intake to resolution. Data Integrity: A single system of truth reduces the risk of human error and ensures that sensitive client information is protected within a secure, professional-grade infrastructure. The platform is built to handle the heavy lifting of legal operations, allowing lawyers to reclaim hours previously lost to administrative overhead. This focus on utility ensures that as a firm grows, its processes remain lean and its outcomes remain predictable. By turning silent data into active intelligence, Filevine provides the edge necessary to navigate the complexities of the modern legal landscape.

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=paid_promo&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1009064&secure%5Bchosen_at%5D=2026-08-11T09%3A32%3A42Z&secure%5Bmedium%5D=sponsored&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=7673&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=589f10a4b19f5c4cc4248b35b937350b8e24c3eface1031ed38a8a939d689bf8&secure%5Burl%5D=https%3A%2F%2Fwww.filevine.com%2Fnew-features%2F&secure%5Burl_type%5D=paid_promos)

### [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)

Spotlight Categories

[Data Science and Machine Learning Platforms](https://www.g2.com/categories/data-science-and-machine-learning-platforms)

[Account-Based Orchestration Platforms](https://www.g2.com/categories/account-based-orchestration-platforms)

[Auto Dialer Software](https://www.g2.com/categories/auto-dialer)

[Field Service Management Software](https://www.g2.com/categories/field-service-management)

[Chatbots Software](https://www.g2.com/categories/chatbots)

Similar Categories

- [Conflict Check](/categories/conflict-check)
- [eDiscovery](/categories/ediscovery)
- [E-Filing](/categories/e-filing)
- [E-Notary](/categories/e-notary)
- [Enterprise Legal Management (ELM)](/categories/enterprise-legal-management-elm)

- [Immigration](/categories/immigration)
- [Intellectual Property Management](/categories/intellectual-property-management)
- [Legal Billing](/categories/legal-billing-software)
- [Legal Case Management](/categories/legal-case-management)
- [Legal CRM](/categories/legal-crm)

- [Legal Document Drafting](/categories/legal-document-drafting)
- [Legal Document Management](/categories/legal-document-management)
- [Legal Hold](/categories/legal-hold)
- [Legal Practice Management](/categories/legal-practice-management)
- [Legal Research](/categories/legal-research)

[Browse AI Legal Assistant Themes](/categories/ai-legal-assistant/themes)

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.

Show More