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The AI research assistant for lawyers and in-house counsel, built on official Italian and European sources.
- Answers your legal questions, with the official sources.
- Reads your documents: upload a contract or a pleading and ask.
- Checks quotations against the source text before they reach you.
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Bianchi law firm
The client discovers defects in the contracted work: by when must they report them, and for how long can they bring an action?
✓ 12 sources read✓ Citations checked✓ Provisions in force
The client must report non-conformities or defects within sixty days of discovering them, on pain of forfeiture . An action against the contractor becomes time-barred two years after delivery of the work . If the work is a building and the defects are serious, the ten-year period applies .
Sources
CODICE CIVILE art. 1667
«Il committente deve, a pena di decadenza, denunziare all'appaltatore le difformità o i vizi entro sessanta giorni dalla scoperta.»
normattiva.it · in force✓ Found
CODICE CIVILE art. 1669
«Quando si tratta di edifici o di altre cose immobili destinate per la loro natura a lunga durata…»
normattiva.it · in force✓ Found
It answers only from official sources, and tells you which.
Normattivalegislation in force
Regional lawssix regions
Constitutional Courtjudgments and orders
EUR-LexEU law
EU Court of Justicejudgments
Court of Cassationselected rulings
Agenzia delle EntrateRevenue Agency · guidance
CONSOBresolutions
COVIPpensions
ANACpublic procurement
ARERAenergy
ARTtransport
One platform for all of your team's research.
From the quick question to the matter that takes a day's work. Every answer arrives with its sources alongside, ready to check.
Research
Ask as you would a colleague.
Write the question with the facts of the case. Chiostro searches current legislation, case law and administrative guidance and answers with numbered references that open the official text.
- Legislation, case law and guidance together
- A direct answer in about a minute
- In Italian and English
670,000+official documents in the database: legislation, guidance and case law
~1 minfor a direct answer; 3-4 minutes for deep research
Quotationschecked one by one against the text of the source
Fast answers, with the sources to defend them.
Compliance, contracts, employment and tax questions: a verifiable answer to share with the business.
Try it on your own work
“In a legal opinion, a wrong citation costs more than slow research. With Chiostro we start from official sources and every reference opens on the text of the law: that is how we wanted to use artificial intelligence in our firm.”
Security and confidentiality
Professional privilege comes first.
Stored in EuropeYour files are stored on infrastructure in the European Union, kept separate for each customer.
No training on your dataYour questions and documents are never used to train models.
We log the bare minimumTimings and counts needed to run the service, not the content of your matters.
GDPR and AI ActController, providers and transfers are described in the privacy notice.
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- SOC 2 Type II
- EU Cloud CoC
The infrastructure Chiostro runs on (Cloudflare) is certified to ISO/IEC 27001, 27018 and 27701, has an annual SOC 2 Type II report and adheres to the EU Cloud Code of Conduct. These are Cloudflare's certifications, not Chiostro's. Security and data
One subscription, all of Chiostro.
You pay in tokens, that is, by the amount of text processed. You don't buy one practice area at a time, and there are no modules to add: every plan opens every source and every feature from day one. Cancel whenever you like from the Subscription page: the plan stays active until the end of the month already paid and then stops.
- Every source, in every practice area: legislation in force, case law, guidance from the authorities, EU law, regional laws. The exact list is on the Coverage page
- Research and deep research, with quotations compared word for word against the source
- Your firm's documents, from your computer or from Google Drive, Dropbox and OneDrive
- Deadlines calculated and written to your Google Calendar
- Export to Word
- Matters, research history and support
- Gmail attachments into the matter · being activated
- Chiostro inside Claude, through the MCP connector · how to connect
Base
€19.90 / month
3 million tokens a month
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- Private: VAT included · Business: + VAT
- Business: up to 2 people from the firm signed in at the same time
Pro
€149.90 / month
100 million tokens a month
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- Business: up to 2 people from the firm signed in at the same time
Enterprise
€499.90 + VAT · / month
500 million tokens a month
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- Credits shared by the firm
- Up to 25 colleagues, with no limit on how many are signed in at once
- Up to 5 answers in progress at once
Private individuals: prices VAT included. Businesses and firms (Business): price + VAT. No minimum term, monthly billing, cancel at any time. With Base and Pro in the Business version, up to 2 people from the firm can be signed in at the same time, each with their own access; each extra seat costs €49 + VAT a month (Business only).
Top-ups, only with an active plan, which do not expire: €20 for 5 million tokens · €70 for 18 million · €140 for 38 million · €300 for 85 million (VAT included for private individuals, + VAT for businesses and firms).
How much a question uses. 1 credit = 100,000 tokens. A deep answer uses 3-4 credits on average (300,000-400,000 tokens), a direct one usually less: usage varies with the question, the documents and the sources to read. The «Utilizzo» (Usage) section always shows the tokens left. The free trial includes 1 million tokens with every feature, no credit card, for at most 3 months, and does not turn into a subscription by itself. If you use Chiostro for personal purposes you have 14 days to withdraw, with the «Recedere dal contratto qui» (withdraw from the contract here) function on the Subscription page.
To protect the service there are some technical limits: each person can have at most 2 answers in progress at once and make at most 150 requests a day. The full terms and conditions (version 3.0 · 20 October 2026, in Italian, which prevails) are in the Terms; the technical limits are in point 11. Chiostro provides legal information, not legal advice: answers can contain errors and must be checked against the sources.
Frequently asked questions
Can Chiostro get things wrong?
Yes, like any tool. That is why every answer carries its linked sources and quotations are compared word for word with the text of the source, and every [n] reference points to a source Chiostro actually retrieved, with the link to the official source. The final judgment remains yours.
Which sources does it answer from?
From official databases: Normattiva, the Constitutional Court, EUR-Lex, selected rulings of the Court of Cassation and the guidance issued by the authorities. The Coverage page says exactly what is included and what is not.
What happens to my clients' data?
Documents are stored in the European Union; to write the answer, the passages needed go to the providers of the artificial intelligence models (including in the United States) under contractual safeguards, never to train them. The privacy notice describes the controller, providers and transfers.
How does the free trial work?
Fill in the form and you receive an email with access. The trial includes 1,000,000 tokens with every feature, no credit card, and lasts at most 3 months; it does not turn into a subscription by itself. A deep answer uses 300,000-400,000 tokens on average, a direct one usually less. Then you can choose a plan.
How do I cancel?
From the Subscription page, whenever you like, or with an email to ciao@chiostro.legal: the plan stays active until the end of the month already paid and then stops. If you use Chiostro for personal purposes you also have 14 days to withdraw, with the «Recedere dal contratto qui» (withdraw from the contract here) function on the same page.
Real questions, on your own work.
Put to Chiostro the questions on your desk today. You will see the sources, the checked citations, the reasoning.
For everyone who works with the law: lawyers, in-house counsel, accountants, employment advisers, notaries, public offices, court reporters.
- Fill in the form
- Receive access by email
- Use 1 million tokens with every feature, for at most 3 months
- ISO/IEC 27001
- ISO/IEC 27018
- ISO/IEC 27701
- SOC 2 Type II
- EU Cloud CoC
The infrastructure Chiostro runs on (Cloudflare) is certified to ISO/IEC 27001, 27018 and 27701, has an annual SOC 2 Type II report and adheres to the EU Cloud Code of Conduct. These are Cloudflare's certifications, not Chiostro's. Security and data