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OpusLaw
What it is
OpusLaw is a web-based legal AI workspace for research, analysis, drafting, and practice management across jurisdictions. It searches statutes, regulations, and case law, then produces jurisdiction-aware drafts with citations. Contract analysis surfaces risk clauses and inconsistencies and suggests redlines. The site says Carta AI answers questions in 25 languages, while its FAQ says it can draft in over 50. The FAQ describes integrations with common practice management and document management platforms, with custom enterprise integrations for specific workflows. OpusLaw says data is encrypted in transit and at rest, confidential data is not used to train its AI, and matters remain isolated. It also says data residency options are available, with cross-border transfer requiring explicit consent and an appropriate legal basis. A free plan is available. Paid monthly plans are Carta Actus at $9.99 a month, Carta Corpus at $29.99 a month, Carta Magistra at $79.99 a month, and Carta Suprema at $149.99 a month. OpusLaw advises treating AI output as a first draft or research aid, and says bespoke drafting benefits from attorney review.
For and against
For
- Searches statutes, regulations, and case law.
- Produces jurisdiction-aware drafts with citations.
- Contract analysis flags risks and suggests redlines.
- Offers data residency options and matter isolation.
- Has a free plan and four listed paid tiers.
Against
- Paid plans range from $9.99 to $149.99 a month.
- AI output should be reviewed for bespoke drafting.
- Industry security certifications are still being pursued.
The verdict
OpusLaw combines legal research, drafting, contract analysis, and practice management in a web workspace. Its language claims differ between the homepage and FAQ, and the service recommends attorney review of AI-assisted work.
Who it suits
OpusLaw is designed for legal professionals, including law firms, solo attorneys, in-house counsel, and litigation users. It may suit those who want research and drafting tools but can review AI output as a first draft.
Plans and prices
Carta Actus
300 messages/month · 10 TTS uses/month · 7 Practice Hub tools · Email support
Read 30 Sep 2026 · opuslaw.org
Carta Corpus
750 messages/month · 30 TTS uses/month · 17 Practice Hub tools · Priority support
Read 30 Sep 2026 · opuslaw.org
Carta Magistra
1,500 messages/month · 80 TTS uses/month · 30 Practice Hub tools · Priority support
Read 30 Sep 2026 · opuslaw.org
Carta Suprema
Unlimited messages · Unlimited TTS · All 30 tools · Dedicated support
Read 30 Sep 2026 · opuslaw.org
On the record
- Certifications
- The FAQ says OpusLaw is pursuing industry security certifications as it grows.opuslaw.org · read 30 Sep 2026
- Contract analysis
- Contract analysis surfaces risk clauses and inconsistencies and suggests redlines.opuslaw.org · read 30 Sep 2026
- Data residency
- The FAQ says data residency options are available and data is not transferred across borders without explicit consent and an appropriate legal basis.opuslaw.org · read 30 Sep 2026
- Integrations
- The FAQ says Carta AI integrates with common practice management and document management platforms, with enterprise integrations for custom workflows.opuslaw.org · read 30 Sep 2026
- Intended users
- OpusLaw describes its tools as designed for legal professionals and highlights law firms, solo attorneys, in-house counsel, and litigation users.opuslaw.org · read 30 Sep 2026
- Languages
- The homepage says Carta AI provides answers across 25 languages, while the FAQ says it can draft in over 50 languages.opuslaw.org · read 30 Sep 2026
- Product
- OpusLaw provides legal AI for research, analysis, drafting, and practice management across jurisdictions.opuslaw.org · read 30 Sep 2026
- Research and drafting
- The platform searches statutes, regulations, and case law and produces jurisdiction-aware, citation-ready drafts.opuslaw.org · read 30 Sep 2026
- Review limitation
- The FAQ says AI output should be treated as a first draft or research assistant and that bespoke drafting benefits from attorney review.opuslaw.org · read 30 Sep 2026
- Security
- OpusLaw says data is encrypted in transit and at rest, confidential data is not used to train its AI, and matters remain isolated.opuslaw.org · read 30 Sep 2026
- Support
- Listed plan support ranges from email and priority support to dedicated support; the about page says every subscriber receives support.opuslaw.org · read 30 Sep 2026
- Workspace
- The site describes an AI legal workspace with purpose-built tools for research, drafting, and practice management.opuslaw.org · read 30 Sep 2026
