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Both run on your own computer and talk to your own model. They are built for different kinds of play, so here is an honest side by side to help you pick the one that fits.
You want free-flowing back and forth, swipes to try another reply, many characters in one group chat, deep lorebooks, expressions and voices, cloud or local models, and a huge community with extensions for almost anything.
You want the style of the MUSH games: you write your pose and the companion writes only its own, inside a world with rooms, a map, scene memory, and pictures and ambience for each room. One companion per world session, on your own machine, with the app holding the AI to its lane.
✓ yes, built in ◐ partly, or through add-ons — no, or not documented
| Feature | SoloRoleplayer// | SillyTavern |
|---|---|---|
| Play style | ||
| Free-flowing chat | ◐Construct mode for plain, out-of-character talk | ✓The whole point: swipes, continue, impersonate |
| Structured, turn-based play: you write your pose, it writes its own | ✓The core design | ◐Group turn orders; chat-style by design |
| MUSH-style commands (say, :, @emit, +ooc) | ✓ | —Slash commands and STscript, a different system |
| The app keeps the AI in its own lane and repairs replies | ✓Ownership rules, quote repair, a repetition guard | —Not documented as built in; you set prompts and stop strings yourself |
| Swipes: try another reply | —Not in this build | ✓ |
| World and environment | ||
| Rooms, exits and a fixed map | ✓/look, /map, /go | —Not documented as built in |
| Pictures and ambience per room | ✓Media sidecar for pictures, audio and ambience | ◐Backgrounds built in; ambient audio and music by extension |
| Single-companion world sessions with save slots | ✓Three world slots | —Organized around characters and chats instead |
| Memory and rules | ||
| Scene memory the app tracks: place, clothes, who holds what | ✓STASIS | ◐Summaries, vector memory and an Author's Note |
| Lorebook / world info | ◐A Library and a world codex | ✓Deep: keywords, recursion, timers, token budgets |
| Relationship stages that change how the companion acts | ✓/arc, off by default | —Not documented |
| Binding hard rules for a character | ✓Hard Rules and Important Notes | ◐You write them into prompts and notes |
| Characters and media | ||
| Many characters in one chat | —One companion per world; the NPC system is unfinished | ✓Group chats |
| Expressions, voices and generated images | — | ✓Sprites, text to speech and image generation |
| Community character cards | ◐Companion packs you build yourself | ✓A large card ecosystem |
| Setup and platform | ||
| Works with local model servers | ✓LM Studio, Ollama, KoboldCPP, llama.cpp | ✓Those and more |
| Works with cloud model APIs | —Local only by design | ✓Many providers |
| Platforms | ◐Windows test build; Mac from source | ✓Windows, Mac, Linux, Docker, Android via Termux |
| Extensions and customization | —Themes, backgrounds and style packets | ✓Extensions, scripting, themes and custom CSS |
| Trust and maturity | ||
| Runs on your machine, no tracking | ✓No accounts, no telemetry, no chat saved to disk by design | ✓Self-hosted with no tracking by the project; third-party extensions carry their own risk |
| Published benchmark and a model trained to stay in lane | ✓Benchmark harness and the Anti-H LoRA, failures included | —Not applicable |
| Maturity | Early beta, one maker | Established, 300+ contributors, a large community |
| Cost and license | Free for noncommercial use; source available | Free and open source (AGPL-3.0) |
SillyTavern column based on its public documentation (docs.sillytavern.app and its GitHub page) as of October 10, 2026. It is a large, fast-moving project, so details change. If we got something wrong, please tell us and we will fix it.
Not sure which you want? They can live side by side on the same computer, so try both. SoloRoleplayer// is a new beta and the NPC system is still unfinished; SillyTavern is the mature choice if you want the widest range of features today.
A solo project. SoloRoleplayer// is for adults, 18 and over. It runs offline on your own computer and is not monitored: you are responsible for how you use it.