Terms of Service

Last updated: May 21, 2026

This document constitutes a public offer (offer) to enter into an agreement for the paid provision of access to the Opten service (hereinafter — the "Service").

1. Parties to the Agreement

1.1. The Opten Service is operated by two legal entities depending on the User's region and the payment method used:

1.2. For Users located in the territory of the Russian Federation, the Republic of Belarus and the CIS countries

Individual Entrepreneur Vladislav Pavlovich Voronezhtsev
INN (Tax ID): 723016676391
Address: 625062, Russian Federation, Tyumen, Dmitriy Mendeleev St., bldg. 2, block/section 1, apt./office 148
E-mail: zignifer@gmail.com
Phone: +7 (929) 262-11-17
Applies the simplified taxation system (USN). Not subject to VAT.

In accordance with Art. 437 of the Civil Code of the Russian Federation, this document is a public offer. The actions of the User specified in clause 4.2 of this Offer are deemed acceptance of the offer.

1.3. For Users from other countries

Individual Entrepreneur Nikolai Shupletsov
Tax ID: 306389672
Address: 5 Samgori Street, Tbilisi, Georgia, 0190
E-mail: ummohwell@gmail.com

For international payment methods, Paddle.com Market Limited acts as the Merchant of Record (the official seller in its own name and on its own account). This means that Paddle purchases the Service from IE Nikolai Shupletsov as an authorized reseller and resells access to the User. In this case, the purchase terms are additionally governed by the Paddle Buyer Terms and Conditions.

2. Terms and Definitions

Service — the "Opten" software, distributed as an extension for the Google Chrome browser, as well as the opten.space website, intended for the analysis and improvement of users' text queries (prompts) before they are used in artificial intelligence services for generating images and videos.

Provider (Contractor) — the individual entrepreneur specified in Section 1 of this Offer, depending on the User's region.

Customer (User) — an individual who has accepted this Offer.

Subscription — paid access to the extended functionality of the Service (the "Pro" plan) with automatic renewal each billing period.

One-time access — paid access to the extended functionality of the Service (the "Pro" plan) for one billing period without automatic renewal.

Billing period — 30 (thirty) calendar days from the moment of activation or renewal of the Subscription or the purchase of One-time access.

Payment provider — an organization that ensures the acceptance of the User's payments in favor of the Provider.

3. Description of the Service

3.1. The Service provides the User with the following functional capabilities:

3.1.1. Prompt quality assessment — analysis of the User's prompt text with the assignment of a numerical score from 0 to 100 based on its compliance with the recommendations of a specific artificial intelligence model.

3.1.2. Prompt improvement — automatic rewriting of the User's prompt taking into account the identified shortcomings (the Auto-enhance feature).

3.1.3. Supported AI generator platforms:

syntx.ai (images and videos)
higgsfield.ai (images, videos)
www.freepik.com (Freepik Pikaso)

The list of supported platforms may be expanded without separate notice to the User.

3.1.4. Supported artificial intelligence models — at the time of publication of this Offer, the Service contains documentation for more than 50 models, including the Midjourney, Flux, Seedream, GPT Image, Nano Banana, Imagen, Kling, Seedance, Sora, Veo, Luma Ray, Runway, MiniMax Hailuo families and others. The current list is available in the Service interface.

3.1.5. Reference image analysis — taking into account images attached by the User when assessing the prompt.

3.2. The results of prompt analysis are generated by artificial intelligence and are advisory in nature. The Provider does not guarantee that the User will achieve specific results when generating images or videos using improved prompts.

3.3. The Service does not generate images or videos itself. The Service provides recommendations for improving prompts, which are then used by the User in third-party artificial intelligence services.

4. Subject Matter of the Offer

4.1. The Provider undertakes to provide the Customer with access to the functions of the Service in accordance with the selected tariff plan, and the Customer undertakes to pay for the services in the manner and on the terms provided for by this Offer.

4.2. Acceptance (full and unconditional acceptance) of this Offer is deemed to be the performance by the Customer of any of the following actions:

registration of an account in the Service with the marking of consent to the terms of this Offer and the Privacy Policy
payment for a Subscription or One-time access

4.3. The date of conclusion of the agreement is considered to be the date of acceptance in accordance with clause 4.2.

4.4. By accepting this Offer, the Customer:

confirms that they have reached the age of 18 (eighteen), or that they are acting with the consent of their legal representative
confirms their legal capacity and the right to enter into this agreement
confirms that they have read and agree to the Privacy Policy
confirms the accuracy of the data provided at registration

5. Tariff Plans and Cost

5.1. Free "Free" plan

account registration is free of charge
access to the paid functions of the Service is not included in this plan
Cost: 0 (zero) ₽ / $0

5.2. "Pro" plan (Subscription with auto-renewal)

Composition of services during one billing period:

300 (three hundred) prompt checks
the Auto-enhance feature (one-click prompt improvement)
priority analysis speed
early access to new models added to the Service
user support via the Telegram messenger

Subscription parameters:

automatic renewal each billing period
Cost for Users from the Russian Federation, Belarus and the CIS: 199 (One hundred ninety-nine) rubles 00 kopecks per billing period. Not subject to VAT (the simplified taxation system (USN) applies).
Cost for international Users: the equivalent in US dollars or euros, indicated on opten.space at the time of payment, including applicable taxes calculated and withheld by Paddle.

5.3. "Pro" plan (One-time access)

Composition of services:

300 (three hundred) prompt checks
the Auto-enhance feature
user support via the Telegram messenger

One-time access parameters:

service provision period: one billing period (30 calendar days) from the moment of payment
automatic renewal is not performed
Cost for Users from the Russian Federation, Belarus and the CIS: 299 (Two hundred ninety-nine) rubles 00 kopecks (one-time). Not subject to VAT (the simplified taxation system (USN) applies).
Cost for international Users: the equivalent in US dollars or euros, indicated on opten.space at the time of payment.

5.4. Change of Cost

5.4.1. The Provider has the right to change the cost of the tariffs, having notified the Customer at least 14 (fourteen) calendar days before the changes take effect. Notification is made by one of the following methods: posting information on opten.space, sending a message to the Customer's e-mail, displaying a notification in the extension interface.

5.4.2. A change of cost does not apply to the current paid period of an active Subscription.

6. Payment Procedure

6.1. Payment is made by non-cash means through one of the following payment providers:

6.2. YooKassa (for Users from the Russian Federation, Belarus and the CIS)

Operator: YooMoney NBCO LLC, Bank of Russia license No. 3510-K.
Supported payment methods:

bank cards of the "Mir", Visa, Mastercard, JCB, UnionPay payment systems
SBP (Faster Payments System)
the YooMoney electronic wallet
other methods supported by YooKassa at the time of payment

6.2.1. After a successful payment, the User receives a cash receipt in accordance with Federal Law No. 54-FZ. The receipt is sent to the e-mail address used at registration, or is provided in the YooKassa personal account.

6.3. Paddle (for international Users)

Operator: Paddle.com Market Limited (United Kingdom).
Paddle acts as the Merchant of Record and processes all applicable taxes (VAT, GST, sales tax) depending on the User's country.

6.4. Subscription (auto-renewal)

6.4.1. The Subscription is renewed automatically each billing period. The funds are charged on the date corresponding to the date of the first payment. For automatic renewal of the Subscription, it is necessary to keep a valid payment method saved in the Payment provider's system.

6.4.2. The Customer has the right to cancel the automatic renewal of the Subscription at any time by the following methods:

through the extension interface (popup → "Cancel subscription")
through the personal account on opten.space
through the Paddle customer portal (for international Users)
by sending a request to the Provider's e-mail address indicated in Section 1

6.4.3. Upon cancellation of the Subscription:

automatic renewal ceases
access to the "Pro" plan functions is retained until the end of the current paid billing period
at the end of the paid period, the Customer is transferred to the free plan
the saved payment method is detached from the account

6.4.4. Cancellation of the Subscription is not in itself grounds for a refund for the current paid billing period. Refund terms are determined by the Refund Policy.

6.4.5. In the event of an unsuccessful charge during automatic renewal, the Provider may retry the charge. If the charge fails within 7 (seven) calendar days from the scheduled charge date, access to the "Pro" plan functions ceases, and the Customer is transferred to the free plan.

6.5. One-time access

6.5.1. When choosing One-time access, payment is made once. The payment method is not saved, and no automatic charging is performed.

6.5.2. Access to the "Pro" plan functions is valid for 30 calendar days from the moment of payment. Upon expiration of this period, the Customer is automatically transferred to the free plan.

7. Moment of Fulfillment of Obligations

7.1. The services for providing access to the Service are considered duly rendered in full if, during the paid billing period, the Customer had the technical ability to use the functions of the selected plan.

7.2. The services are rendered continuously during the paid billing period. No service delivery act is drawn up. At the Customer's request, the Provider may provide a certificate of use of the Service.

8. Procedure for Provision of Services

8.1. Access to the Service is provided around the clock, 7 days a week.

8.2. The Provider makes reasonable efforts to ensure the uninterrupted operation of the Service, but does not guarantee the absence of technical interruptions related to:

carrying out maintenance
updating the software
fixing failures and malfunctions
actions of third parties (payment providers, infrastructure providers)
force majeure circumstances

8.3. The Provider notifies the Customer in advance of planned technical work lasting more than 1 (one) hour through the extension interface or by e-mail.

8.4. The Provider has the right to change the composition and functionality of the Service without prior notice, provided that such changes do not significantly impair the useful properties of the Service for the Customer.

9. Rights and Obligations of the Parties

9.1. The Provider undertakes to:

provide the Customer with access to the functions of the Service in accordance with the selected plan
ensure the protection of the Customer's personal data in accordance with the Privacy Policy
notify the Customer of material changes in the terms of service provision
review the Customer's inquiries and claims within the time limits established by this Offer

9.2. The Provider has the right to:

change the functionality, the composition of supported platforms and artificial intelligence models
establish and change usage limits for each tariff plan
suspend or terminate the Customer's access to the Service in the event of the Customer's violation of the terms of this Offer, the law, or the Service's policies
carry out planned technical work
block the account upon detection of signs of improper use (mass automation, circumvention of technical restrictions, use on behalf of another person)

9.3. The Customer undertakes to:

use the Service in accordance with its purpose and applicable law
not attempt to circumvent the technical restrictions of the Service (including, but not limited to, attempts to circumvent check limits, the use of automated means for the purpose of unauthorized access, attempts at reverse engineering)
not use the Service to process prompts containing or aimed at creating content that contravenes the law (including extremist materials, calls for violence, sexual content involving minors, materials that infringe the rights of third parties)
provide accurate data at registration and keep it up to date
not transfer account data (login, password, access tokens) to third parties
not use the Service for the commercial redistribution of functions without a separate written agreement with the Provider

9.4. The Customer has the right to:

use the functions of the Service within the limits of the selected tariff plan
receive support through the communication channels specified by the Provider
withdraw from the agreement at any time in the manner provided for by this Offer and the Refund Policy
request the deletion of the account and associated personal data

10. Intellectual Property

10.1. All exclusive rights to the Service, including the program code, design, logos, trademarks, documentation and other results of intellectual activity, belong to the Provider or are lawfully used by the Provider on the basis of the relevant licenses.

10.2. The Customer receives a non-exclusive, non-transferable, revocable license to use the Service solely within the scope of its functional purpose and for the duration of this agreement.

10.3. The Customer retains all rights to the prompts entered by them into the Service. By transferring prompts to the Service, the Customer grants the Provider a simple (non-exclusive) license for their temporary processing for the sole purpose of providing services under this Offer, without the right to transfer them to third parties beyond the cases described in the Privacy Policy.

10.4. The Customer is prohibited from:

copying, distributing, modifying, or reworking the program code of the Service
removing or concealing copyright notices and other indications of ownership
using the Provider's trademarks and logos without written permission

11. Limitation of Liability

11.1. The Service is provided "as is". The Provider is not liable for the full conformity of the Service to the specific purposes, expectations and notions of the Customer not expressly stated in this Offer.

11.2. The Provider is not liable for:

the results of the generation of images and videos in third-party AI generators that use the Service's recommendations
the availability, operability and quality of third-party artificial intelligence services
the Customer's losses arising from their violation of the terms of this Offer
the Customer's lost profits

11.3. The aggregate property liability of the Provider to the Customer for obligations arising from this Offer is limited to the amount of funds paid by the Customer for the current billing period.

11.4. The limitations of liability established by this section do not apply if they contravene the mandatory provisions of applicable consumer protection law.

12. The Customer's Right to Withdraw from the Agreement

12.1. In accordance with Art. 32 of the Russian Federation Law "On Protection of Consumer Rights", the Customer has the right to withdraw from this agreement at any time, provided that the Provider is paid for the expenses actually incurred by it in connection with the performance of obligations under this agreement.

12.2. The procedure for exercising this right, the amount of the deduction of actual expenses and the time limits for the refund of funds are determined by the Refund Policy.

13. Term of the Offer and Termination of the Agreement

13.1. This Offer comes into force from the date of its posting on opten.space/terms and is valid until its cancellation by the Provider.

13.2. The agreement concluded between the Provider and the Customer on the basis of acceptance of this Offer is valid until its termination by one of the parties.

13.3. The Customer has the right to terminate the agreement at any time by:

canceling the automatic renewal of the Subscription in the manner described in clause 6.4
deleting the account in the Service
ceasing to use the Service

13.4. The Provider has the right to terminate the agreement unilaterally and out of court in the event of:

the Customer's violation of the material terms of this Offer
a single gross violation of the requirements of clause 9.3
receipt of a reasoned demand from an authorized state body
liquidation or cessation of the Provider's activities

13.5. Upon termination of the agreement at the Provider's initiative on grounds not related to the Customer's violation of the terms of the Offer, the Provider refunds the Customer the paid funds in proportion to the unused period.

13.6. Upon termination of the agreement at the Customer's initiative without fault of the Provider, the refund of funds is made in accordance with the Refund Policy.

14. Changes to the Offer

14.1. The Provider has the right to make changes to this Offer. The current version of the Offer is posted on opten.space/terms with an indication of the date of the last update.

14.2. The Provider notifies the Customer of material changes at least 14 (fourteen) calendar days before the changes take effect by one of the following methods:

sending a message to the Customer's e-mail address
notification in the extension interface
posting information on the main page of opten.space

14.3. The changes take effect from the date indicated in the notification. If the Customer does not agree with the changes, they have the right to terminate the agreement in the manner of clause 13.3.

14.4. Continued use of the Service after the changes take effect signifies the Customer's agreement with the updated terms.

15. Dispute Resolution and Applicable Law

15.1. For agreements with IE V. P. Voronezhtsev

15.1.1. This Offer and the agreements concluded on its basis are governed by the law of the Russian Federation.

15.1.2. All disputes and disagreements arising between the parties are resolved through negotiations.

15.1.3. The claim procedure is mandatory. The deadline for responding to a claim is 15 (fifteen) business days from the moment of its receipt by the Provider.

15.1.4. In the event that it is impossible to resolve the dispute through negotiations, the dispute is subject to consideration in court in accordance with the law of the Russian Federation. Jurisdiction is determined in accordance with the applicable procedural law.

15.2. For agreements with IE Nikolai Shupletsov

15.2.1. This Offer is governed by the law of Georgia without regard to conflict-of-law principles, except in cases of application of the mandatory consumer protection provisions of the country of the Customer's permanent residence.

15.2.2. All disputes are subject to the exclusive jurisdiction of the competent courts of Tbilisi, Georgia, except in cases where the mandatory provisions of the law of the Customer's country of residence provide for different jurisdiction for consumer disputes.

16. Provider's Requisites

16.1. IE Vladislav Pavlovich Voronezhtsev (Russian Federation)

INN (Tax ID): 723016676391
OGRNIP: indicated in the EGRIP extract
Registered address: 625062, Russian Federation, Tyumen, Dmitriy Mendeleev St., bldg. 2, block/section 1, apt./office 148
Bank: "Yekaterinburgsky" Branch of JSC "Alfa-Bank"
Settlement account: 40802810638390002456
Correspondent account: 30101810100000000964
BIK: 046577964
Taxation system: USN (not subject to VAT)
E-mail: zignifer@gmail.com
Phone: +7 (929) 262-11-17
Website: opten.space

16.2. Individual Entrepreneur Nikolai Shupletsov (Georgia)

Tax ID: 306389672
Address: 5 Samgori Street, Tbilisi, Georgia, 0190
E-mail: ummohwell@gmail.com
Phone: +995 599 15 44 32
Website: opten.space