Not right now. The Superposition is free to use during early access — through August, including model training. We're moving to subscription plans this fall; you can see what's coming, and we'll share the details well before anything changes.

We'll email you when Seph is ready for you, along with instructions on how to get started. We're opening access in batches every week beginning the week of April 6, 2026.

Just an account with The Superposition. Seph runs on Mac, PC, iPhone, and iPad, with Android coming soon.

Yes. Your conversations and your notes are yours. Your IP stays your IP — we don't use your creative work to train our own models. When you train a model with Seph, you control how it's used and who has access.

Writers, world-builders, showrunners, game designers — anyone building story-driven IP. If you carry a world in your head that's richer than what ends up on the page, Seph is for you.