セットアップ不要・自動記憶のSillyTavern代替
SillyTavernは強力ですが、ロールプレイを始める前に自分でホストし、モデルを接続し、Lorebookを一つずつ手入れする必要があります。
Mythoraはその逆のホスト型:ブラウザを開いて生きた世界に入れば、世界が自動で記憶し反応します。インストールもAPIキーもWorld Infoの管理もなく — 無料で開始。
If you're looking for a SillyTavern alternative, it's usually not because SillyTavern lacks power — it's the opposite. It does almost everything, and that's the cost: you host it yourself, connect a model or API, and build out World Info and lorebook entries by hand before the story even starts. For some people the setup is the hobby; for everyone else it's a wall in front of the part they actually wanted.
Mythora is the hosted opposite. You open a browser, pick a curated world, and start playing. There's no install, no backend to wire up, no API key to paste, and no lorebook to maintain — the world already exists, populated and consistent, and its memory runs for you.
The trade is real and worth naming: SillyTavern hands you total control over the model, the prompt, and your data. Mythora hands you a world that's already built and already remembering, in exchange for not tuning the machinery yourself. If the tuning is the part you enjoy, keep SillyTavern. If you just want to play, that's the gap Mythora fills.
| 項目 | Mythora | SillyTavern |
|---|---|---|
| 長期記憶 | NPCがセッションを越えて記憶 | 手動のWorld Info / Lorebook管理 |
| キュレーション世界 | ジャンル別の作り込まれた生きた世界 | セルフホスト型チャットフロントエンド — モデルは自前 |
| 意味ある選択 | すべての選択が生きた世界を変える | 自分で設定する自由形式チャット |
| 無料で開始 | はい — 毎日無料シード | 無料・オープンソース — ただしモデル/APIは自前 |
| 世界が消えない | 存続するオリジナル世界 — 一夜で消えない | 自分でホスト・バックアップするローカルデータ |
Memory you don't have to author
In SillyTavern, an NPC remembers a detail because you wrote it into a World Info entry with the right keyword to trigger it. In Mythora, cross a merchant in Shattered Crown and wander back three chapters later — the slight is still on the table, and you never made an entry for it. The world records what happened on its own, and the narrator brings forward the parts that matter to where you are now.
Bring-your-own-model vs. a world that just runs
SillyTavern is a frontend, not a service. It's a UI that connects to a model you provide — a paid API like OpenAI or Claude, or a local model running on your own hardware. That's what makes it endlessly flexible: you choose the brain, the prompt format, the sampler settings, the extensions. It's also what makes it a project: nothing happens until you've stood up a backend, and your ongoing quality and cost are whatever you wired together.
Mythora ships the whole stack. The model, the memory system, the retrieval, the world simulation — all hosted, all tuned, nothing to assemble. You give up swapping the model or hand-editing the prompt; you get a thing that works the moment you open it. For most players who found SillyTavern's setup heavier than the payoff, that's the trade they were actually looking for.
Lorebooks vs. memory that maintains itself
SillyTavern's memory is World Info: entries you author, each keyed to trigger words, injected into the prompt when a keyword appears. It's a genuinely clever system and it gives you exact control — but the control is the work. Every fact a character should "remember" is a fact you first wrote down and keyworded, and a long campaign becomes a lorebook you keep grooming.
Mythora builds the memory as you play. When you swear an oath, cross a faction, or spend a night in a town, that becomes a fact attached to a character and a place — no entry, no keyword, no upkeep. A layered memory system compresses your history instead of dropping it, so an NPC can raise something from twenty sessions ago without you having curated it. The difference isn't more memory; it's memory you didn't have to author.
A shared, persistent world instead of a local save
SillyTavern runs on your machine, and your history lives in local files you manage and back up. That's private and portable — and it's also solitary: the world is a chat between you and the model, and it exists wherever your save does.
Mythora's worlds are hosted, persistent, and shared. Other real players inhabit the same world, the simulation advances between your sessions, and the traces you leave are still there when you or someone else returns. It's a different shape of experience — less a private sandbox you control completely, more a living place that keeps going without you.
Don't switch if…
SillyTavern is genuinely the better tool if control is the point. If you want to choose your own model, run it locally for privacy, tune prompts and samplers, install extensions, or build an experience exactly to your taste — including latitude a hosted, App Store–distributed product can't offer — stay with SillyTavern. Mythora deliberately trades that control for a world that's already built, already hosted, and already remembering. Switch only if the setup and upkeep were the parts you'd happily hand off.
今すぐ遊べる世界
SillyTavern alternative — FAQ
Is Mythora a good SillyTavern alternative?
If you like what SillyTavern does but not the setup — self-hosting, wiring up a model, maintaining lorebooks — yes. Mythora is a hosted living world where memory is automatic, so you get persistent roleplay without assembling or grooming anything.
Do I need my own API key or model for Mythora?
No. SillyTavern is a frontend that needs a model you supply; Mythora is fully hosted — the model, memory, and world simulation are all included. You just open it and play.
Do I still have to maintain a lorebook or World Info?
No. Mythora builds memory from what you do as you play. The world records what happened on its own, so NPCs recall past events without you authoring or keywording entries.
Is Mythora free?
Yes — free to start with daily seeds, no card required. SillyTavern is free and open-source too, but you pay separately for the model or API it runs on; with Mythora there's nothing extra to supply.
Can I use my own model or customize the prompt in Mythora?
No — and that's the deliberate trade. Mythora hosts and tunes the whole stack so it works out of the box. If choosing your own model and editing prompts is the point for you, SillyTavern is the better fit.
Is Mythora self-hosted like SillyTavern?
No. SillyTavern you install and run yourself; Mythora runs in the browser and has an iOS app, with your character and world carried across both. Nothing to host.
Is my Mythora world private to me?
Mythora's worlds are shared and persistent — other real players inhabit the same world, and it keeps evolving between sessions. That's different from SillyTavern's private, local save. If you specifically want a solitary, offline, fully private setup, SillyTavern is better for that.