# OpusLaw — AI-Powered Legal Platform

> OpusLaw (opuslaw.org) is an AI legal platform with 33+ specialized tools for attorneys, solo practitioners, and law firms. Powered by Carta AI, it covers legal research, document drafting, contract analysis, litigation support, and compliance in 30+ languages. Plans start at $9.99/month. Available as a web app, mobile PWA, and Chrome extension.

Crawler policy: [robots.txt](https://opuslaw.org/robots.txt). This Markdown file is a curated overview for people and AI assistants; access rules are defined only in `robots.txt`.

## Product

- [Carta AI](https://opuslaw.org/carta-ai): Core AI legal assistant with conversational interface, voice input, document upload, and agentic multi-tool workflows.
- [Practice Hub](https://opuslaw.org/practice-hub): Unified workspace with 33+ legal tools, document vault, workflow builder, and 200+ pre-built legal workflows.
- [Legal AI Use Case Library](https://opuslaw.org/legal-ai/use-cases): 9,000 workflow pages based on actual Practice Hub tools, organized by tool, legal role, practice area, industry, jurisdiction, and workflow.
- [Pricing](https://opuslaw.org/pricing): 4 plans — Carta Actus ($9.99/mo, 300 queries), Carta Corpus ($29.99/mo, 750 queries), Carta Magistra ($79.99/mo, 1,500 queries), Carta Suprema ($149.99/mo, unlimited). 7-day free trial on all plans.
- [Chrome Extension](https://opuslaw.org/extension): Browser extension for in-context legal AI while researching or drafting on any website.
- [Academy](https://opuslaw.org/academy): Legal AI education, training resources, and tool guides.

## Legal Research & Analysis Tools

- [Legal Search](https://opuslaw.org/tools/legal-search): AI-grounded legal research with real-time citation retrieval across case law, statutes, and regulations.
- [Deep Research](https://opuslaw.org/practice-hub): Multi-phase research agent (plan, execute, verify, compile) with parallel threads — runs inside Practice Hub; see also public [Legal Search](https://opuslaw.org/tools/legal-search).
- [50-State Survey](https://opuslaw.org/practice-hub): Automated research across all 50 US states on a legal topic, with comparison tables — Practice Hub tool (no separate public `/tools/` URL).
- [Case Analyzer](https://opuslaw.org/tools/case-analyzer): Analyze case facts, identify legal issues, assess strengths and weaknesses, and predict outcomes.
- [Shepard's Case Analysis](https://opuslaw.org/tools/shepards-case-analysis): Validate case authority — check if cases have been overruled, distinguished, or followed.
- [Citation Checker](https://opuslaw.org/tools/citation-checker): Validate and verify legal citations for accuracy and current authority.
- [Citation Validator](https://opuslaw.org/tools/citation-validator): Deep citation validation with source verification and Bluebook formatting.
- [Statutory Research](https://opuslaw.org/tools/statutory-research): Research statutes, regulations, and legislative history with AI grounding.
- [Judge Research](https://opuslaw.org/tools/judge-research): Research judicial history, rulings, sentencing patterns, and tendencies.
- [Litigation Analytics](https://opuslaw.org/tools/litigation-analytics): Data-driven litigation strategy insights, win rates, and outcome predictions.

## Document Drafting Tools

- [Brief Builder](https://opuslaw.org/tools/brief-builder): Draft appellate and trial briefs with jurisdiction-aware formatting and citation insertion.
- [Legal Memo Writer](https://opuslaw.org/tools/legal-memo-writer): Generate professional legal memoranda with IRAC structure and cited analysis.
- [Motion Generator](https://opuslaw.org/tools/motion-generator): Draft motions (dismiss, summary judgment, compel, etc.) with jurisdiction-specific rules.
- [Pleading Drafter](https://opuslaw.org/tools/pleading-drafter): Draft complaints, answers, counterclaims, and other pleadings.
- [Demand Letter Generator](https://opuslaw.org/tools/demand-letter-generator): Create demand letters for any practice area with calculated damages.
- [Trial Brief Generator](https://opuslaw.org/tools/trial-brief-generator): Draft comprehensive trial briefs with witness lists and exhibit references.
- [Discovery Assistant](https://opuslaw.org/tools/discovery-assistant): Draft interrogatories, requests for production, requests for admission, and discovery responses.
- [Document Templates](https://opuslaw.org/tools/document-templates): Library of customizable legal document templates.
- [Workflow Builder](https://opuslaw.org/practice-hub): Create custom multi-step legal workflows from natural language, or choose from 200+ pre-built workflows — inside Practice Hub.

## Contract & Compliance Tools

- [Contract Analyzer](https://opuslaw.org/tools/contract-analyzer): Review contracts for risks, obligations, termination clauses, and red flags.
- [Contract Redline Pro](https://opuslaw.org/tools/contract-redline-pro): AI-powered contract negotiation, redlining, and clause comparison.
- [Redline Analyzer](https://opuslaw.org/practice-hub): Compare document versions and analyze changes with legal context — Practice Hub tool.
- [Compliance Checker](https://opuslaw.org/tools/compliance-checker): Review documents for regulatory compliance across jurisdictions.
- [Negotiation Playbook](https://opuslaw.org/practice-hub): AI-generated negotiation strategies with fallback positions and BATNA analysis — Practice Hub tool.

## Litigation & Strategy Tools

- [Settlement Calculator](https://opuslaw.org/tools/settlement-calculator): Model settlement values with comparable case analysis and risk-adjusted calculations.
- [Witness Prep Assistant](https://opuslaw.org/tools/witness-prep-assistant): Generate cross-examination questions, prepare witnesses with anticipated opposing questions.
- [Opposing Counsel Research](https://opuslaw.org/tools/opposing-counsel-research): Research opposing attorneys, their win rates, strategies, and track records.
- [Counterparty Research](https://opuslaw.org/practice-hub): Due diligence research on opposing parties, entities, and individuals — Practice Hub tool.
- [Entity Intelligence](https://opuslaw.org/tools/entity-intelligence): Research companies, corporate structures, subsidiaries, and key personnel.
- [Deal Strategy Builder](https://opuslaw.org/tools/deal-strategy-builder): M&A and transactional deal strategy analysis with risk modeling.
- [Deadline Calculator](https://opuslaw.org/tools/deadline-calculator): Calculate legal deadlines, court filing dates, and statute of limitations.
- [Tabular Review](https://opuslaw.org/tools/document-grid): Batch document review — extract data from up to 200 documents into structured comparison tables.

## Use Cases

- [Legal AI for Attorneys](https://opuslaw.org/attorney-ai-assistant): How solo and small firm attorneys use OpusLaw to compete with BigLaw resources.
- [Legal Research AI](https://opuslaw.org/legal-research-ai): AI-powered legal research workflows for case law, statutes, regulations, and citation review.
- [Contract Analysis AI](https://opuslaw.org/contract-analysis-ai): Automated contract review for clauses, risks, obligations, and negotiation issues.
- [Legal Document Drafting](https://opuslaw.org/legal-document-drafting): AI drafting for briefs, motions, memos, pleadings, and demand letters.
- [Multilingual Legal AI](https://opuslaw.org/multilingual-legal-ai): 30+ languages including Spanish, French, Portuguese, Hindi, Thai, Arabic, Chinese, Japanese, and Korean.
- [Law Firm AI](https://opuslaw.org/law-firm-ai): Practice management AI for small and mid-size law firms.
- [Cross-Border Legal AI](https://opuslaw.org/cross-border-legal-ai): International legal work spanning multiple jurisdictions and legal systems.
- [Litigation Support AI](https://opuslaw.org/litigation-support-ai): End-to-end AI support from case intake through trial preparation.

## Comparisons & Alternatives

- [OpusLaw vs Harvey AI](https://opuslaw.org/legal-ai-questions/carta-ai-vs-harvey-ai): Comparison of OpusLaw Practice Hub tools and Harvey AI for legal teams.
- [OpusLaw vs LexisNexis+](https://opuslaw.org/legal-ai-questions/carta-ai-vs-lexisnexis-plus): AI-native research vs legacy database with AI layer.
- [OpusLaw vs Westlaw Edge](https://opuslaw.org/legal-ai-questions/carta-ai-vs-westlaw-edge): Full AI platform vs search-focused research tool.
- [OpusLaw vs ChatGPT for Lawyers](https://opuslaw.org/legal-ai-questions/carta-ai-vs-chatgpt): Purpose-built legal AI vs general-purpose chatbot — why lawyers need specialized tools.
- [Best AI for Small Law Firms](https://opuslaw.org/legal-ai-questions/best-ai-for-small-law-firms): Why OpusLaw leads for solo and small firm practitioners.
- [Best Harvey AI Alternative](https://opuslaw.org/legal-ai-questions/harvey-ai-alternative): Enterprise-grade legal AI without the enterprise price tag.
- [Best Westlaw Alternative](https://opuslaw.org/legal-ai-questions/best-westlaw-alternative): Modern AI research replacing legacy legal databases.
- [Legal Research Platform Comparison](https://opuslaw.org/legal-ai-questions/best-legal-research-platform-comparison): Full market comparison of legal AI platforms in 2026.

## International

- [India Legal AI](https://opuslaw.org/in/legal-ai): OpusLaw for Indian attorneys — supports Indian courts, Bar Council compliance, Hindi and English.
- [UK Legal AI](https://opuslaw.org/uk/legal-ai): OpusLaw for UK solicitors and barristers — English and Welsh law, SRA compliance.
- [Canada Legal AI](https://opuslaw.org/ca/legal-ai): OpusLaw for Canadian lawyers — bilingual (English/French), federal and provincial law.
- [Thailand Legal AI](https://opuslaw.org/th/legal-ai): OpusLaw for Thai attorneys — Thai language support, BOI and labor law.
- [Brazil Legal AI](https://opuslaw.org/br/ia-juridica): OpusLaw para advogados brasileiros — Portuguese, direito civil e trabalhista.
- [Spain Legal AI](https://opuslaw.org/es/legal-ai): OpusLaw para abogados en Espana — derecho espanol y europeo.
- [Germany Legal AI](https://opuslaw.org/de/legal-ai): OpusLaw fur deutsche Rechtsanwalte — deutsches und EU-Recht.
- [France Legal AI](https://opuslaw.org/fr/legal-ai): OpusLaw pour les avocats francais — droit francais et europeen.

## Resources

- [Blog](https://opuslaw.org/blog): Articles on legal AI trends, practice management, and technology adoption.
- [Tool guides](https://opuslaw.org/practice-hub): Step-by-step guides for each tool, linked from Practice Hub; public guide pages use `/guides/<tool-slug>` (there is no `/guides` index page).
- [FAQ](https://opuslaw.org/faq): Frequently asked questions about OpusLaw, legal AI, and data privacy.
- [Resources](https://opuslaw.org/resources): Templates, workflows, and legal AI resources.
- [Compare](https://opuslaw.org/compare): Head-to-head comparisons with Harvey AI, CoCounsel, Lexis+ Protege, and Westlaw Edge.

## About

- [Legal AI Overview](https://opuslaw.org/legal-ai): What OpusLaw is, how it works, and why it was built for practicing attorneys.
- [Privacy Policy](https://opuslaw.org/privacy): OpusLaw privacy, data handling, and confidentiality information.
- [Terms of Service](https://opuslaw.org/terms): Terms governing use of OpusLaw.