Clear Rules, Fair Terms

1. General Provisions

1.1 Scope

These Terms of Use (hereinafter "Terms") govern the rights and obligations between LexAI Technologies, s.r.o. (hereinafter "LexAI" or "Operator") and any natural or legal person (hereinafter "User") who accesses the LexAI platform available at www.lexaitechnologies.app (hereinafter "Service" or "Platform").

1.2 Acceptance of Terms

By registering an account, accessing the Service, or using it in any way, the User confirms that they have read and understood these Terms and agree to be bound by them. If the User does not agree to these Terms, they must not use the Service.

1.3 Changes to Terms

LexAI reserves the right to unilaterally amend these Terms at any time. Users will be notified of material changes by email to the address provided at registration, or by notice within the Platform, at least 14 days before the changes take effect. Continued use of the Service after the effective date of any changes constitutes acceptance of the updated Terms.

2. Definitions

For the purposes of these Terms, the following definitions apply:

• "Platform" / "Service" — the LexAI software platform operated as Software-as-a-Service (SaaS), including all its components, features, and content.
• "User" — any natural or legal person who has created an account and/or uses the Service.
• "Account" — a registered user profile enabling access to the Service.
• "User Content" — all documents, texts, queries, files, and other materials that the User uploads to or processes through the Platform.
• "AI Output" — texts, analyses, summaries, recommendations, and other outputs generated by artificial intelligence in response to User queries.
• "Tokens" — units measuring the volume of AI processing within the Platform; one token corresponds to approximately 0.75 English words or 4 characters.
• "Subscription" — a recurring payment plan (Plus, Premium, Business, or Enterprise) granting the User access to the Platform and a monthly token allowance.
• "Top-up" — a one-time purchase of additional tokens beyond the monthly Subscription allowance.
• "Sensitive Legal Documents" — contracts, pleadings, legal opinions, court decisions, and other documents that the User processes through the Platform.
• "Third Parties" — entities other than LexAI and the User whose services are integrated into the Platform (see the list of sub-processors in the Privacy Policy).

3. Access to the Service and Registration

3.1 Eligibility

The Service may only be used by persons who:

• are at least 18 years of age;
• have full legal capacity to enter into obligations under these Terms;
• where acting on behalf of a legal entity, are authorised to represent and bind that entity.

3.2 Account Registration

Access to the Service requires creating an Account. The User must provide true, accurate, and complete information at registration. Users must not:

• create accounts under a false identity or impersonate any person or entity;
• create multiple accounts to circumvent free-tier limits or other restrictions;
• share account credentials with third parties (except in Business and Enterprise tiers with Team Collaboration enabled).

3.3 Account Security and Zero-Knowledge Architecture

LexAI operates a zero-knowledge architecture platform. This specifically means:

• The User's password never leaves their device — all cryptographic key derivation occurs exclusively client-side.
• Conversation content is encrypted with three independent layers of encryption (AES-256-GCM) directly on the User's device before being transmitted to LexAI's servers.
• LexAI, as Operator, has no technical ability to read the content of Users' conversations or recover their password.

As a result, the User is solely responsible for:

• maintaining the confidentiality of their password and login credentials;
• securely storing their 12-word Recovery Phrase, as it is the only means of recovering access to data if the password is lost — LexAI cannot restore access by any other method;
• all activities carried out through their Account.

The User must notify LexAI immediately upon any suspicion of unauthorised access to their Account.

4. Description of the Service

4.1 Platform Functionality

LexAI provides AI-assisted legal tools, including:

• AI Legal Chat — a conversational interface for legal research, analysis, and assistance, powered by Claude models (Anthropic);
• Legal Research — access to 51 verified legal sources covering Czech case law, legislation, ministerial outputs, and EU law;
• Document Analysis — upload and AI-assisted analysis of legal documents in PDF and DOCX formats;
• Summarisation — automated summarisation of legal texts;
• Argument Testing — assisted evaluation of legal arguments;
• Project Management — organisation of work into case projects with document storage;
• Export — generation of outputs in PDF, Word, and (depending on tier) XLS and OCR formats.

4.2 Service Availability

LexAI strives for maximum Platform availability but does not guarantee uninterrupted or error-free operation. LexAI reserves the right to temporarily restrict the Service or parts thereof for maintenance, updates, or security purposes. Users will be notified of planned downtime with reasonable advance notice.

4.3 Technical Requirements

Use of the Platform requires a compatible device with a modern web browser and internet connection. LexAI is not liable for issues caused by the User's inadequate technical setup.

5. Pricing Plans, Tokens, and Billing

5.1 Subscription Overview

The Platform is available under the following tiers:

All prices are final. LexAI Technologies, s.r.o. is not a VAT payer and does not charge VAT on top of the listed prices (see Section 5.7).

5.2 Free Tier

The Free tier provides a one-time allowance of 300,000 tokens with no automatic monthly reset. Once tokens are exhausted, the User is prompted to upgrade to a paid tier. Registration requires entry of a payment card as an anti-abuse measure; no charge is made automatically upon expiry of the Free tier — the User must actively choose a paid tier.

Conversation history within the Free tier is retained for a maximum of 60 days (hard limit), with the user-controlled auto-delete preference capped at 14 days. Archived conversations are not exempt from this hard limit. Accounts inactive for 6 months will have all data deleted.

5.3 Tokens — Consumption Rules

• Tokens are counted as the sum of input and output tokens processed by Claude models (Anthropic). Claude Sonnet and Claude Haiku models share the same token bucket.
• Prompt caching: tokens served from cache still count towards the User's monthly allowance.
• Once the monthly limit is exhausted, AI functionality is blocked and the User is prompted to upgrade or purchase a Top-up. LexAI does not offer metered overage (automatic billing for usage beyond the limit).
• Unused tokens from a monthly Subscription do not roll over to the following month.

5.4 Token Top-up

Users on Plus and Premium tiers may purchase additional tokens as a one-time Top-up:

The following rules apply to Top-ups:

• A Top-up is a one-time purchase and does not renew automatically.
• Top-up tokens are consumed before base subscription tokens (FIFO).
• Unused Top-up tokens are valid for 3 months from the date of purchase; tokens that expire are forfeited with no right to a refund.
• The combined total of base limit and Top-up tokens in any given month may not exceed the limit of the next tier up (guardrail).
• Top-up is not available for the Business tier; Users with recurring high-volume needs are encouraged to upgrade to Enterprise.

5.5 Business Tier — Additional Seats

The Business tier base price of €449 / CZK 10,990 per month covers 5 seats. Each additional seat from the 6th user onward is charged at €39 / CZK 990 per month and adds 1,500,000 tokens to the shared pool. The token limit is shared at the organisation level, not allocated individually per user.

5.6 Billing and Payments

• Payments are processed through the Stripe payment gateway.
• Subscriptions are billed monthly in advance. The billing cycle is based on the date the Subscription commenced — it renews on the monthly anniversary of that date, not on the 1st of the calendar month.
• The token allowance resets on the same date as the billing cycle.
• The User consents to automatic renewal of the Subscription until they actively cancel it.
• Upon downgrade or cancellation, the User retains access to the current tier until the end of the paid billing period; the new (lower) tier or loss of access takes effect from the next billing period.
• Annual billing is not currently available.

5.7 Currency and Pricing

The User selects their preferred currency (EUR or CZK) at checkout. All listed prices are final — LexAI Technologies, s.r.o. is not registered as a VAT payer and does not add VAT to the prices shown.

Users who are VAT-registered businesses in other EU member states are advised that, in accordance with reverse charge rules, they may have their own VAT reporting obligations towards their local tax authority; LexAI bears no responsibility for such obligations.

5.8 Refund Policy

All payments are non-refundable. Upon cancellation of a Subscription, the User retains access to the Service until the end of the current billing period. One-time Top-up tokens are non-refundable and valid for 3 months from the date of purchase; unused tokens expire at the end of that period and are forfeited.

The sole exception to the non-refund policy is a demonstrable technical failure on LexAI's part that prevented the User from accessing the Service. Refund requests on this basis must be submitted to support@lexaitechnologies.com.

5.9 Price Changes

LexAI reserves the right to amend Subscription pricing. Users will be notified by email at least 30 days in advance of any price change. The new pricing will apply to existing Subscriptions from the next billing period following the end of the notice period.

6. Acceptable Use

6.1 Permitted Use

The User may use the Platform solely for lawful purposes and in accordance with these Terms. Permitted purposes include, without limitation: legal research, contract and document analysis, preparation of legal submissions and documents, legal education, and case project management.

6.2 Prohibited Conduct

The following conduct is strictly prohibited:

a) Platform Misuse:

• using the Platform to create, distribute, or facilitate unlawful content or activities;
• using the Platform to harass, intimidate, or harm other persons;
• generating content that infringes the intellectual property rights of third parties;
• impersonating any person or entity;
• generating outputs intended to deceive third parties.

b) Security Interference:

• attempting unauthorised access to LexAI's systems, data, or other accounts;
• conducting penetration testing, vulnerability scanning, or other security testing without prior written consent from LexAI;
• introducing malware, viruses, or other malicious code;
• circumventing or interfering with the Platform's security measures;
• attempting to extract encryption keys or defeat the zero-knowledge architecture of the Platform.

c) Technical Misuse:

• using the Platform in a manner that places unreasonable load on LexAI's infrastructure;
• performing automated scraping, crawling, or data mining without prior consent;
• circumventing token limits or other technical restrictions of the Platform;
• reverse engineering, decompiling, or disassembling the Platform software.

d) Unlawful Content:

• uploading, sharing, or processing content that violates applicable law, including: content infringing copyright, trade secrets, or personality rights of third parties; content promoting criminal activity; content subject to state secrecy or classification; content the User is not authorised to process.

6.3 Responsibility for User Content

The User is solely responsible for all User Content they upload to or process through the Platform. The User represents and warrants that:

• they are authorised to handle such content in the manner they carry out through the Platform;
• processing such content through the Platform (including transfer to sub-processors as described in the Privacy Policy, in particular Anthropic) does not violate any legal or contractual obligations of the User, including duties of confidentiality, trade secret protection, or professional privilege;
• they hold all necessary consents and authorisations with respect to any personal data contained in uploaded documents.

7. AI Outputs and Disclaimer

7.1 Nature of AI Outputs

The Platform uses artificial intelligence models (Claude by Anthropic) to generate AI Outputs. The User acknowledges that:

• AI Outputs are generated automatically and may contain factual errors, outdated information, or inaccuracies.
• AI Outputs do not constitute legal advice within the meaning of applicable legal professional regulations, nor any other form of professional advice.
• AI Outputs must not be used as the basis for real-world legal decisions without verification by a suitably qualified person.
• The accuracy, completeness, or currency of information contained in AI Outputs is not guaranteed.

7.2 Liability for Use of AI Outputs

The User is solely responsible for how they use AI Outputs. LexAI shall not be liable for any loss or damage (pecuniary or non-pecuniary, direct or indirect) arising from the User's reliance on AI Outputs without independent verification.

7.3 Obligations of Regulated Professions

Users practising regulated legal professions (solicitors, barristers, notaries, enforcement agents, insolvency administrators, etc.) are required to assess AI Outputs with the standard of professional care applicable to their profession and to verify their correctness before using them in a professional context. The Platform is not a substitute for professional judgment.

8. Intellectual Property

8.1 LexAI's Rights

The Platform and all its components — including software, algorithms, user interface, databases, trademarks, logos, and documentation — are owned by or licensed to LexAI. They are protected by copyright, database rights, and other intellectual property rights. The User is granted a limited, non-exclusive, non-transferable, and revocable licence to use the Platform in accordance with these Terms. This licence does not authorise the User to deal with LexAI's intellectual property in any other way.

8.2 User's Rights in User Content

The User retains all intellectual property rights in User Content they upload to the Platform. By uploading User Content, the User grants LexAI a limited, non-exclusive licence to process it to the extent necessary to provide the Service (i.e. processing by AI models, storage, encryption, and display to the User). LexAI does not use this licence for any other purpose.

8.3 Ownership of AI Outputs

AI Outputs generated in response to User queries are primarily intended for the User's own use. LexAI does not assert proprietary rights over AI Outputs specifically generated from User Content. The User acknowledges that similar queries from different users may generate similar or identical outputs.

8.4 Feedback

If the User provides LexAI with feedback, suggestions, or ideas for improving the Platform, the User grants LexAI an unlimited, royalty-free, irrevocable licence to use such feedback in any manner without any obligation of compensation.

9. Privacy and Data Protection

The processing of Users' personal data is described in detail in a separate document — the Privacy Policy — which forms an integral part of these Terms. The Privacy Policy is available at https://www.lexaitechnologies.com/en/privacy-policy/.

LexAI operates the Platform with a privacy-first architecture, using zero-knowledge encryption of conversations. User data is never used to train AI models. The Platform uses only the commercial Anthropic Claude API, which is subject to Anthropic's own data retention policy.

10. Limitation of Liability

10.1 Disclaimer of Warranties

The Platform is provided "as is" and "as available." To the maximum extent permitted by applicable law, LexAI disclaims all warranties, express or implied, including warranties of merchantability, fitness for a particular purpose, and non-infringement of third-party rights.

10.2 Exclusion of Damages

LexAI shall not be liable for:

• indirect, consequential, special, or punitive damages;
• loss of profit or loss of business opportunities;
• loss of data caused by the User's own actions (in particular, loss of the Recovery Phrase);
• damage caused by Service outages or unavailability;
• damage caused by reliance on AI Outputs without verification.

LexAI's total cumulative liability to the User for any claims arising out of or in connection with these Terms or use of the Platform is limited to the amount of payments actually made by the User to LexAI for the Service in the 12 months immediately preceding the event giving rise to the claim.

10.3 Force Majeure

LexAI shall not be liable for delay or failure to perform its obligations caused by circumstances beyond its reasonable control (force majeure), including: natural disasters, armed conflict, epidemics, infrastructure failures of third parties (including outages of the Anthropic API, Supabase, Vercel, or Stripe), cyberattacks, or acts of public authority.

11. Termination and Suspension of Access

11.1 Termination by the User

The User may cancel their Subscription or delete their Account at any time through the Platform settings or by contacting support@lexaitechnologies.com. Upon cancellation, access remains active until the end of the paid billing period. Deletion of the Account results in permanent deletion of the User's data in accordance with the Privacy Policy.

11.2 Termination or Suspension by LexAI

LexAI is entitled to suspend or terminate a User's Account without refund in the event of:

• breach of these Terms;
• suspected fraudulent conduct or misuse of the Platform;
• non-payment of amounts due;
• a request by a public authority;
• discontinuation of the Platform.

If an Account is terminated for reasons attributable to LexAI (without fault on the User's part), the User will receive a pro-rata refund for the unused portion of the prepaid billing period.

11.3 Consequences of Termination

Upon Account termination: (i) the User's licence to use the Platform ceases; (ii) LexAI may delete User Content in accordance with the retention periods set out in the Privacy Policy; (iii) provisions of these Terms that by their nature survive termination (in particular Sections 7, 8, and 10) remain in force.

12. Third Parties and Integrations

12.1 Sub-processors and Third Parties

The Platform uses the services of third parties listed in the Privacy Policy (in particular Anthropic, Stripe, Supabase, SendGrid, SerpAPI, Brave Search, IPInfo, Qdrant, and Vercel). The User acknowledges that those third parties are subject to their own terms of service and privacy policies.

12.2 Legal Database

Access to legal database sources (51 verified sources) is provided within the Platform. LexAI does not guarantee the completeness, currency, or accuracy of the legal sources made available. The User must verify the relevance and validity of any sources found against the original authoritative sources.

12.3 Third-Party Links

The Platform may contain links to third-party websites or resources. LexAI is not responsible for the content, availability, or practices of such third parties.

13. General Provisions

13.1 Governing Law and Jurisdiction

These Terms are governed by the laws of the Czech Republic, in particular Act No. 89/2012 Coll. (the Civil Code). All disputes arising out of or in connection with these Terms shall be resolved by the courts of the Czech Republic with subject-matter jurisdiction. The application of the UN Convention on Contracts for the International Sale of Goods (CISG) is excluded.

13.2 Consumer Rights

Users who qualify as consumers within the meaning of applicable consumer protection law retain all rights granted to them by mandatory statutory provisions that cannot be contractually excluded. In the event of any conflict between these Terms and mandatory consumer protection legislation, the mandatory statutory provisions prevail.

Where EU Regulation 2022/2065 (Digital Services Act) or other EU instruments apply, they shall apply to the extent prescribed by those instruments.

13.3 Relationship of the Parties

These Terms do not create any employment, agency, or other contractual relationship between LexAI and the User beyond the provision of the Service. The User is not authorised to act on behalf of LexAI.

13.4 Severability

If any provision of these Terms is found to be invalid, ineffective, or unenforceable, the remaining provisions shall remain in full force and effect. The invalid provision shall be replaced by a provision that most closely reflects its original intent.

13.5 Waiver

Failure to exercise or delay in exercising any right of LexAI under these Terms shall not constitute a waiver of that right.

13.6 Entire Agreement

These Terms, together with the Privacy Policy, constitute the entire agreement between LexAI and the User with respect to the Service and supersede all prior agreements, understandings, and communications relating to the subject matter of these Terms.

13.7 Contact

All queries, complaints, or notices relating to these Terms should be sent to: