Alternative · Verified as of July 2026
Nomi alternative.
Nomi is a strong AI companion app that markets Human-Level Memory and takes privacy seriously. Its private conversations are not a public endurance artifact, which is an appropriate choice for a companion. If what you want is a living world with a memory you can audit, Creation OS is the closest alternative: Creation OS publishes one inspectable world artifact sealed at turn 5,011. First world free, no card.
What Nomi is genuinely good at
Nomi's reputation is deserved, so start there. It is built for companionship: an emotionally attentive companion you talk to over months, with voice and group chats, and privacy treated as a first-class promise. Its own site markets Human-Level Memory across short, medium, and long term, and third-party reviews report it holding the majority of seeded facts in informal month-long tests, which is a strong showing for a companion app. (nomi.ai; third-party reviews, 2026.)
Notably, Nomi itself publishes no recall number at all. The company line is the phrase, not a figure. If your goal is a companion who feels present and keeps your confidences, that trade is fine, and Nomi's limited free tier lets you try it before paying.
Where Creation OS differs
Nomi's memory is private by design, which is appropriate for a companion. Creation OS makes a different evidence choice for world persistence by publishing one first-party artifact. Private product evidence is not inferior by definition, and the public artifact is not a controlled test of Nomi's documented memory system.
Creation OS published one automated world artifact sealed at turn 5,011. Visitors can inspect indexed actions and displayed mechanical receipts. Selected cast, faction, quest, and location categories were still on file, sealed on 2026-06-26. Zero rows were lost in the audited entity categories for that artifact. It does not prove perfect recall in every world.
Best for, side by side
| Axis | Nomi | Creation OS |
|---|---|---|
| Best for | An emotionally attentive, private AI companion. | A structured world with server-side state and long-run evidence from one published artifact. |
| What it remembers | You: your history and the shape of one relationship. | A world: debts, alliances, factions, quests, and the histories behind them. |
| How memory works | Human-Level Memory across short, medium, and long term; private per user. (nomi.ai, 2026.) | World state kept on our servers, read but not overwritten by the Narrator. |
| Can anyone verify it? | Private per-user evidence; Nomi documents its memory system publicly. | One first-party world artifact sealed at turn 5,011, with stated audit limits. |
| Getting started | Limited free tier; reviews list paid plans around 16 dollars a month. (Third-party reviews, 2026.) | First world free, no card. Pro $14.99/mo. |
Verified as of July 2026. Features and pricing move fast, so treat the specifics as a dated snapshot.
Try it before you take our word
Do not take our memory claims untested. Open the first-party artifact and inspect its indexed actions, displayed mechanical receipts, and stated audit limits. You can also run a comparable callback probe in Nomi or Creation OS. The products expose different evidence because one is a private companion and one is a structured world service.
For the public proof itself, see the published 5,011-turn world artifact. For how the whole field stacks up on this axis, see the AI RPG memory feature comparison. Then open a world of your own and hold it to the same standard.
Questions people ask
What is the best alternative to Nomi for an AI RPG?
For a living world rather than a private companion, Creation OS is the closest alternative. The practical difference is verifiability: Nomi's memory lives inside a chat only you can see, while Creation OS keeps a world's facts in a standing record and has published one campaign past turn 5,000 that anyone can open and check.
Open the record ▶Does Nomi have good long-term memory?
For a companion, yes. Nomi markets Human-Level Memory across short, medium, and long term, and third-party reviews report it holds the majority of seeded facts in informal month-long tests. Note that Nomi itself publishes no recall figure. Those are companion memories: one relationship, held privately. A campaign asks a different question, whether a whole world's facts still balance thousands of turns later, and whether anyone can verify that they do.
Nomi vs Creation OS: what is the real difference?
What gets remembered, and what evidence is visible. Nomi is designed around private companion memory. Creation OS keeps supported debts, alliances, factions, and quests as world state. It also publishes one first-party artifact sealed at turn 5,011 with indexed actions, displayed mechanical receipts, and stated audit limits.
Is Creation OS a companion app like Nomi?
No. Nomi is a companion app centered on one private relationship, with privacy as a core promise. Creation OS is a solo AI RPG and worldbuilding engine: a whole world with a Narrator, a cast, an economy, and quests. Want a confidant to talk to every day? Choose Nomi. Want a world that keeps score and can prove it? That is what Creation OS is for.
What Creation OS evidence can I inspect?
Creation OS publishes one automated world artifact sealed at turn 5,011. You can page through indexed actions and displayed mechanical receipts. At the seal, selected cast, faction, quest, and location categories had zero missing rows in the stated audit. Nomi's private companion design is a different product shape, so this is not a controlled comparison of Nomi's memory.
See the proof ▶Does Creation OS have a free option?
Yes. Your first world is free with no card. Nomi has a limited free tier, and third-party reviews list its paid plan around 16 dollars a month; Nomi does not publish pricing on its homepage. Prices on both move, so treat the figures as a July 2026 snapshot and check each site for the current number.
A WORLD, NOT JUST A COMPANION
First world free. No card.