Frequently asked questions

Create Me is for a real person — you. You upload reference photos and Siren trains a persistent identity for the highest likeness consistency; it's best for creators and self-content. Create a Character invents someone brand new: describe them, build them from guided options, or hit Surprise Me. Siren generates four candidate looks, you pick one, and the character is ready to create with in moments — no photos and no training.

Not for characters. Create a Character works instantly from a generated reference set. Training is only needed for Create Me (a likeness of a real person) or when you choose to Lock This Identity on a character for maximum consistency. Think of training as an upgrade, not an entrance fee.

Three photos to start — a clear front, a side angle, and a full-body shot. Add more anytime to sharpen likeness or unlock advanced stack slots like body, anatomy, and intimate. Create a Character needs no photos at all.

Initial identity training runs in about 20 minutes on our L40S GPUs. Additional stack slots train independently and queue automatically.

None. Create an identity or a character, pick a scene from the curated gallery (or write your own prompt), click generate. Siren handles the model selection, identity weighting, and post-processing.

A World is a generative world pack. Like a lorebook, it holds written lore — but it also holds visual information: characters, locations, events and aesthetics. Tap Use This World, choose who's in the scene, and pick a location and event; Siren uses the world to shape the images, stories and video you generate. You can build your own worlds, attach them to characters, or use ones the community has published.

No — every field beyond a name is optional. Add personality, background, relationships, speaking style, scenario and worlds if you're telling stories or chatting; skip them if you just need a consistent brand model. Private creator instructions are only ever visible to you.

When you pick a face, Siren builds a reference set for that character, and generations match the face from those references — consistent enough to start creating immediately. If you want maximum consistency across future generations, ✨ Lock This Identity trains on the character's reference images using the same high-fidelity training behind Create Me. You can generate extra reference images first; more images give a better lock. Each generated image features one locked face.

Images, multi-frame Stories and Video, from one Create screen — with scene, location and event pulled from a world if you like. Results can be saved, added to projects, varied or animated.

Yes. Characters, worlds and identities are Private by default and stay that way unless you change it. Nothing appears in Explore unless you publish it as Public.

You choose a visibility — Private (only you), Unlisted (anyone with the link) or Public (discoverable in Explore) — and what to include: identity images, profile, linked world, sample scenes. Then set permissions: Use allowed lets others generate with your character or world while it stays yours; Remix allowed lets them create their own version, credited back to yours. You can also mark it "no commercial use". Change any of this at any time.

Yes. Publishing is per asset and per part — you can share a character's profile while leaving its identity images unpublished, or publish a world and let others bring their own characters into it.

Publishing is free on every plan. Siren doesn't have a marketplace — characters and worlds can't be bought or sold on Siren.

Yes — on the web, and by SMS. A character's personality, background, speaking style and worlds shape every reply, and replies can include a photo. You can chat with your own characters and with community characters whose creators allow use. Regular characters reply instantly on every plan — on the web and by SMS. 18+ character chat is on Ultimate.

From a character's profile you can give it a phone number. Anyone who texts that number chats with the character by SMS, and photo replies arrive as MMS — it's the same character you chat with on the web. SMS chat is included on every plan.

Only you, unless you publish something. Siren accounts are private by default, and your reference photos are stored encrypted and used only to train your personal identity model. If you publish a character or world, only the parts you choose are shared, with the visibility and permissions you set.

Yes. Account deletion removes all reference photos, trained LoRAs, and generated outputs. Cancellation does not auto-delete — you keep access to your library until you explicitly request removal.

For your own identity, yes — within the Creator and Ultimate tiers, behind an explicit opt-in toggle per account. Siren does not allow generating identifiable real people without consent, and we hard-block CSAM and non-consensual depictions.

All characters must be adults — Siren rejects character descriptions that suggest a minor. 18+ characters and worlds can be Private or Unlisted, but never Public, so they never appear in Explore. 18+ character chat is on the Ultimate plan, and those conversations are answered on Siren's own GPUs rather than a third-party AI service.

Siren is open to everyone 18 and over. Create an account with a username, email and password — no waitlist or invite needed — and you'll land in onboarding to create a character, train one of you, or just explore. New accounts start on the Starter plan.

Yes — on every plan. Premium paths are trained identities (Create Me and Lock This Identity) and 18+ character chat, which is on Ultimate. SMS character chat is on every plan. See pricing.

Every generation costs credits — roughly 1 credit per image, more for video. Plans include a monthly credit allotment; unused credits roll over for 30 days.

Anytime. Upgrades take effect immediately with prorated credits; downgrades take effect at the next billing cycle.

Unused credits within the first 7 days of a new account are refundable. After that, credits are non-refundable but always carry forward within their 30-day window.