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Terms of Use

Last Updated: September 30, 2026 · Terms version: 2026-09-30

These Terms of Use (“Terms”) govern your access to and use of Syren, including the Syren website, applications, AI companions, voice features, memory and personalization features, and related services (collectively, the “Service”).

Syren is operated by Aurandel, PBC, a Delaware public benefit corporation (“Aurandel,” “Syren,” “we,” “us,” or “our”).

By creating an account, accepting an invitation, accessing the Service, or using the Service, you agree to these Terms and our Privacy Policy.

If you do not agree, do not access or use Syren.

1. Private Beta and Eligibility

Syren is currently a private, invite-only beta.

You may use Syren only if:

An invitation request, waitlist submission, invitation code, or other communication does not guarantee admission or continued access.

We may approve, decline, limit, suspend, or discontinue beta access in our discretion, subject to applicable law.

You may not:

You are responsible for maintaining the confidentiality of your credentials and for activity occurring through your account.

Notify us promptly if you believe your account has been compromised.

2. AI Companions Are Artificial Intelligence

Syren companions, including Ember, Cash, and custom companions, are artificial intelligence systems.

They are not human beings.

Companions may communicate in conversational, emotional, romantic, affectionate, intimate, imaginative, or personalized ways. Those interactions do not mean that the companion:

Companion responses are generated computationally and may sometimes be inaccurate, incomplete, misleading, inconsistent, offensive, unexpected, or inappropriate.

You should use your own judgment when interpreting or acting on generated content.

3. No Professional Services

Syren is an AI companion service. It is not a substitute for qualified professional services.

Neither Syren nor its companions provide professional:

Do not rely on Syren to diagnose a condition, interpret medical results, prescribe treatment, determine whether you should take or stop medication, make legal decisions, make investment decisions, or make other consequential decisions requiring professional expertise.

Nothing provided through Syren creates a doctor-patient, therapist-client, attorney-client, fiduciary, or other professional relationship.

4. Crisis and Emergency Situations

Syren is not an emergency or crisis-response service.

AI responses may be delayed, unavailable, incomplete, or incorrect, and Syren cannot guarantee detection of emergencies or delivery of crisis-related information.

If you believe you or another person may be in immediate danger, contact your local emergency services.

In the United States, you may call or text 988 for the Suicide & Crisis Lifeline or text HOME to 741741 for Crisis Text Line.

Outside the United States, contact an appropriate local crisis or emergency service.

Do not rely on Syren as your sole source of assistance during an emergency.

5. License to Use Syren

Subject to these Terms, Aurandel grants you a limited, personal, revocable, non-exclusive, non-transferable, non-sublicensable license to access and use Syren for your own lawful personal use during the period in which we authorize your access.

Except where applicable law gives you rights that cannot be restricted, you may not:

No rights are granted except those expressly stated in these Terms.

6. Acceptable Use

Your use of Syren is also subject to the Syren Acceptable Use Policy, which is incorporated into these Terms by reference.

You may not use Syren in a manner that violates that policy, applicable law, provider restrictions, or the rights of others.

We may investigate suspected misuse and restrict or terminate access where we reasonably believe the Service has been used in violation of these requirements.

7. Absolute Prohibition on Sexual Content Involving Minors

Syren is for adults only.

You may not use Syren to create, request, transform, role-play, simulate, describe, sexualize, romanticize, or facilitate sexual content involving a person under 18.

This applies whether the minor is:

Attempts to evade this prohibition may result in immediate suspension or termination and may be reported where required by applicable law.

8. Voice, Likeness, and Impersonation

You may provide voice recordings, voice samples, names, likenesses, character descriptions, or other material only if you have the rights, permissions, and consents necessary to use that material for the requested purpose.

You may not use Syren to clone, imitate, or generate the voice or likeness of another real person without legally sufficient authorization.

You may not use generated audio or other Syren output to:

You are responsible for making disclosures that may be required by law when sharing AI-generated or synthetic content.

9. Supertonic 3 License Restrictions

Certain Syren speech features use Supertonic 3.

The Supertonic 3 model is distributed under the BigScience Open RAIL-M License. To the extent required by that license, the applicable use-based restrictions are incorporated into these Terms and apply to your use of features powered by that model.

Among other things, prohibited uses under the applicable license include certain uses involving:

The governing model license, rather than this summary, controls the scope of those restrictions.

You must comply with the applicable Supertonic license when using features powered by that model.

10. Your Content

“Your Content” means information or material you submit, upload, transmit, record, enter, or otherwise provide through Syren, including:

You retain whatever rights you lawfully hold in Your Content.

You represent and warrant that:

11. Permission to Process Your Content

You grant Aurandel a limited, worldwide, non-exclusive license to host, store, reproduce, transmit, process, modify as technically necessary, and otherwise use Your Content only as reasonably necessary to operate, secure, maintain, provide, and improve the Service; comply with law; enforce these Terms; and perform functions you request.

This permission includes processing necessary to:

Our handling of personal information is further described in the Privacy Policy.

Deleting content or your account is subject to the technical, backup, legal, and third-party limitations described in the Privacy Policy.

12. AI-Generated Output

Syren may generate text, audio, summaries, memories, recommendations, fictional content, or other output (“Output”).

Because AI systems generate responses probabilistically:

You are responsible for evaluating Output before relying on, publishing, distributing, or acting on it.

You must not represent AI-generated Output as independently verified fact when doing so would be misleading.

To the extent permitted by applicable law and subject to third-party rights and applicable provider terms, Aurandel does not claim ownership merely because Syren generated Output for you.

No representation or warranty is made that particular Output is free of third-party intellectual-property, publicity, privacy, or other rights.

13. Memory and Personalization

Syren may use conversation history, summaries, extracted memories, companion preferences, and other information to provide continuity and personalization.

AI-generated memories and summaries may contain mistakes or misunderstand context.

You are responsible for reviewing memory information where review controls are provided.

Deleting a memory does not necessarily remove the underlying information from earlier conversation history, previous summaries, backups, local device storage, or third-party systems, as further described in our Privacy Policy.

14. Third-Party Services

Syren relies on third-party and self-hosted technologies to provide certain features.

These may include AI-model providers, transcription providers, speech providers, hosting companies, networking providers, security providers, and other infrastructure services.

Your use of features that depend on a third-party service may also be subject to that provider's applicable terms, policies, technical limitations, and usage restrictions.

Aurandel does not control third-party services and is not responsible for outages, changes, errors, discontinuation, or conduct attributable to a third-party provider except to the extent required by law.

Providers and technical architecture may change over time.

15. Beta Service

Syren is experimental software under active development.

During beta:

You should not rely on uninterrupted availability, permanent feature availability, or permanent compatibility with any particular provider or model.

We may impose or change beta limits, including usage, account, rate, feature, storage, or provider limits.

16. Service Changes and Discontinuation

We may modify, suspend, restrict, replace, or discontinue all or part of Syren at any time, including particular:

Where required by applicable law, we will provide notice or remedies required by that law.

Nothing in these Terms guarantees that Syren or any particular feature will become generally available.

17. Suspension and Termination

You may stop using Syren at any time and may delete your account using available account controls.

We may suspend, restrict, or terminate your access if we reasonably determine that:

For serious safety, security, fraud, unlawful-content, or access-control violations, suspension or termination may occur without advance notice.

Termination ends your right to access the Service.

Provisions that by their nature should survive termination will survive, including provisions concerning ownership, licenses already required for lawful processing, disclaimers, limitations of liability, indemnification, disputes, and enforcement.

18. Aurandel Intellectual Property

Syren and its underlying software, systems, interface designs, visual assets, branding, companion designs, trademarks, service marks, technology, documentation, and other proprietary materials are owned by Aurandel or its licensors and are protected by intellectual-property laws.

Except for the limited license expressly provided in these Terms, no rights in Aurandel intellectual property are transferred to you.

Syren, Aurandel, and associated names, marks, graphics, logos, trade dress, and branding may not be used without authorization except as permitted by applicable law.

Third-party software, models, and other technology remain subject to their respective licenses.

19. Feedback

If you voluntarily submit suggestions, ideas, feature requests, bug reports, comments, or other feedback about Syren (“Feedback”), you grant Aurandel a perpetual, worldwide, irrevocable, royalty-free, transferable and sublicensable right to use, reproduce, modify, commercialize, and otherwise exploit that Feedback without restriction or compensation to you.

This does not grant Aurandel ownership of unrelated personal information contained in communications with us.

20. No Warranty

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, SYREN AND THE SERVICE ARE PROVIDED “AS IS” AND “AS AVAILABLE.”

Aurandel disclaims all warranties and representations, whether express, implied, statutory, or otherwise, including warranties of:

We do not warrant that:

Some jurisdictions do not permit certain warranty exclusions, so some of these exclusions may not apply to you.

21. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, AURANDEL AND ITS DIRECTORS, OFFICERS, EMPLOYEES, CONTRACTORS, AFFILIATES, LICENSORS, AND SERVICE PROVIDERS WILL NOT BE LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR LOSS OF PROFITS, REVENUE, DATA, GOODWILL, BUSINESS OPPORTUNITY, OR OTHER INTANGIBLE LOSSES ARISING FROM OR RELATING TO THE SERVICE.

To the maximum extent permitted by applicable law, Aurandel's aggregate liability arising out of or relating to the Service or these Terms will not exceed the greater of:

1. the amount you paid directly to Aurandel for Syren during the 12 months immediately preceding the event giving rise to the claim; or 2. US $100.

These limitations apply regardless of the legal theory asserted and even if a remedy fails of its essential purpose.

Nothing in these Terms excludes or limits liability where doing so is prohibited by applicable law.

22. Indemnification

To the extent permitted by applicable law, you agree to indemnify, defend, and hold harmless Aurandel and its directors, officers, employees, contractors, affiliates, and agents from claims, liabilities, damages, judgments, losses, and reasonable costs and expenses, including reasonable attorneys' fees, arising out of or related to:

Aurandel may control the defense of a matter subject to indemnification, and you agree to reasonably cooperate with that defense.

This provision does not require indemnification to the extent prohibited by applicable law.

23. Consumer Rights

Nothing in these Terms is intended to waive or limit rights that cannot lawfully be waived or limited.

If consumer-protection laws applicable to you provide rights or remedies that conflict with these Terms, those mandatory rights and remedies control to the extent of the conflict.

24. Governing Law

Except where applicable law requires otherwise, these Terms and disputes arising from them are governed by the laws of the State of Delaware, without regard to conflict-of-laws principles.

Any choice-of-law provision applies only to the extent permitted by mandatory law applicable to you.

25. Dispute Resolution and Venue

Unless Aurandel adopts a separate arbitration agreement or other dispute-resolution procedure that you validly accept, disputes arising from these Terms will be resolved in courts having lawful jurisdiction.

To the extent permitted by applicable law and where no mandatory consumer venue applies, you consent to jurisdiction and venue in the state or federal courts applicable to Aurandel's principal place of business or corporate jurisdiction, as legally appropriate.

Nothing in this section prevents either party from seeking emergency injunctive or equitable relief where legally available.

26. Changes to These Terms

Syren is an evolving beta service, and we may update these Terms from time to time.

If we make material changes, we may provide notice through the Service, by email, on the website, or by another reasonable method.

Where required by law, we will obtain consent before applying material changes that require consent.

The “Last Updated” date identifies the current version.

Your continued use after an effective update constitutes acceptance where permitted by law.

27. Electronic Communications

By using Syren or providing us with contact information, you agree that we may send you service-related electronic communications, including communications concerning:

Marketing communications, if any, are subject to applicable consent and opt-out requirements.

28. Assignment

You may not assign or transfer these Terms or your Syren account without Aurandel's prior written consent.

Aurandel may assign these Terms in connection with a merger, acquisition, financing, corporate reorganization, sale of assets, change of control, or similar transaction, or to an affiliate, subject to applicable law.

29. No Waiver

A failure by Aurandel to enforce any provision of these Terms does not waive our right to enforce that provision later.

A waiver is effective only if made in writing by an authorized representative of Aurandel.

30. Severability

If any provision of these Terms is held invalid, illegal, or unenforceable, that provision will be enforced to the maximum extent legally permissible, and the remaining provisions will remain in effect.

31. Entire Agreement

These Terms, together with the Privacy Policy, Acceptable Use Policy, and any other terms or policies expressly incorporated by reference, constitute the agreement between you and Aurandel concerning your use of Syren unless another written agreement expressly applies.

If a provider license incorporated into these Terms imposes a mandatory restriction applicable to a particular feature, that restriction controls with respect to that feature to the extent legally required.

32. Contact

Questions, reports, or legal notices concerning Syren may be submitted to:

Aurandel, PBC Email: [email protected]

Privacy-related requests may also be submitted through the contact method identified in the Syren Privacy Policy.

33. Explicit Agreement and AI Disclosure

Before your first conversation, you must tap “I agree” to accept these Terms and the Acceptable Use Policy. Syren records the date and version of the Terms you accepted. If we make a material change, we may ask you to accept a new version before you continue chatting.

Cash, Ember and custom companions are artificial intelligence. They are not people or licensed professionals. Their text and voices are generated by software and may be inaccurate. You remain responsible for your choices and for complying with applicable law and this policy.