Vasara - legal AI assistant
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Artificial Intelligence gets national law convincingly wrong

Trusted legal sources for your Claude or ChatGPT, easy to verify – from legislation and court decisions to guidance from public authorities.
Try free for 14 days

Every Max plan feature.
Your card is not charged automatically.

Why source verification matters

No AI is right every time. The question is whether you can tell.

Confident answers are easy. The hard part is knowing which citation is real, which article is still in force, and whether the source says what the answer claims.

Right now that means checking each one by hand. Or finding out when someone else does.

Trusted legal sources for your AI assistant

Keep your AI assistant – or use the Vasara web app

You use Claude, ChatGPT or Copilot

Connect Vasara to your AI. The tool you're used to – now with trusted national and EU legal sources and references or citations that are easy to verify.
How to connect

Works with the free Start plan too – 50 requests per month

You want a standalone tool

Vasara workspace: trusted legal sources, legal document analysis and processing large document volumes – when Claude or ChatGPT isn't enough.
Try free for 14 days

Vasara workspace – from the Basic plan

How verification works

Every claim links to the passage it came from

1. A closed, current collection.
Vasara searches national and EU legislation and case law that we maintain and update ourselves, not the open web and not the model's memory.
2. The exact passage.
You get the article, paragraph or part of the ruling the claim is taken from. Not a paraphrase, so you read the law itself, not the AI's version of it.
3. One click to the source.
A single click opens the cited legal source, so you can see for yourself whether it says what the answer claims and check the context before you rely on it.

The final answer is written by an AI model, and models make mistakes – all of them. So we don't promise correct answers. We give you verifiable ones.

Sources essential for professional work

National and EU law, in one place

Available today for Lithuania and Poland, together with EU law.

National legislation

Statutes, ratified international agreements, regulations and other acts published in each country's official journals — in their current consolidated versions.

European Union law

Regulations, directives and other EU legal acts, which apply in every Member State either directly or through implementation into national law.

National case law

Rulings of the constitutional, supreme and supreme administrative courts. Case law of the courts of appeal, regional and district courts, and the administrative courts.

EU and international case law

Judgments of the Court of Justice of the European Union and the European Court of Human Rights.

Guidance from public authorities

Tax rulings and the positions of authorities such as labour inspectorates and public procurement offices — relied on in practice, but scattered across separate sites.

Sources are updated daily – from the Basic plan.

Built for legal work

Vasara handles the routine. You keep the judgment.

Connector
Use trusted legal sources, together with the data from your Projects and Insight Grids, directly in Claude or ChatGPT. Run legal research without switching tools and get answers backed by citations you can verify.
Legal research
Quickly find national and EU legislation, case law and guidance from public authorities relevant to your query. Search current consolidated texts and sources updated daily, in a simple, intuitive interface.
Assistant
Analyze documents, ask complex questions and get answers with references to statutes, EU regulations and court rulings. Accuracy grounded in sources, with each reference pointing to the passage it relies on.
Projects · Pro
A case, legal due diligence or a compliance audit – large volumes of documentation without the chaos. Run bulk document analysis, build a chronology table, identify missing facts and find the needle in the haystack.
Insight Grid · Pro
Turn large document sets into organized data that is easy to analyze. The tool automatically extracts the key information into the table columns you define – saving time and automating the work.
Translations
Translate from one language to another or generate bilingual documents formatted in parallel columns, preserving terminology, document structure and numbering.

Done with Vasara: 12,115 legal searches per month (July 2026) · 1,486 legal document analyses · 300+ lawyers use Vasara

Vasara doesn't do everything

What Vasara doesn't do

It doesn't write court filings for you

It gathers the sources and analyzes the documents. You make the arguments and the decisions.

It doesn't replace commentaries and legal doctrine

It helps you check whether the provision a commentary discusses is still in force, and read it in its current consolidated version.

It doesn't guarantee a correct answer

It gives you the exact passage and a trusted source, so you can verify every claim yourself.

It doesn't cover every jurisdiction

It covers Lithuanian, Polish and EU law, based on the sources listed above. For other countries, you'll still need other sources.

Built for professional secrecy

Your clients' confidences stay with you

For lawyers, client confidentiality is a professional duty, not a preference. Vasara is designed to keep your data under your control.

Never used to train AI

We commit never to use your input, queries or uploaded documents to train or fine-tune AI. We require the same commitment from our AI model and infrastructure partners.

Stored and processed in the EU

All data is processed exclusively within the European Union, in line with the GDPR, and is never transferred to third countries. Your clients' data stays under EU data protection rules.

Encrypted at rest and in transit

Your data is encrypted both at rest and in transit. That covers documents and queries stored on our systems as well as everything moving between you and Vasara, so material is protected while it is stored and while it is sent.

Access by role

Decide who in your organization can open specific projects and documents. Set access levels by role, so the files of a matter are visible only to the people working on it, and to no one else.

Frequently asked questions

Questions lawyers ask before they start

Accuracy, responsibility, confidentiality and cost. What lawyers want to know before they bring Vasara into their work.