SillyTavern vs Backyard AI
Two local-first paths for power users: maximum-control self-host versus a one-click offline desktop app.
Side by side
| SillyTavern Visit ↗ | Backyard AI Visit ↗ | |
|---|---|---|
| Pricing | BYO API | Freemium · $10/mo |
| Platforms | self-host, desktop | desktop |
| Content policy | Optional NSFW | Optional NSFW |
| Founded | 2023 | 2022 |
| Primary regions | Global | US, EU, JP |
| Tags | #local#byo-api#open-source | #local#offline#desktop |
How they differ
SillyTavern and Backyard AI both keep your roleplay local rather than on a company’s servers, but they aim at very different comfort levels with setup.
SillyTavern is a self-hosted front-end: you install it, point it at almost any model — a local back-end like KoboldCpp, or a cloud API such as Claude, GPT, or DeepSeek through OpenRouter — and get the deepest customization available, including lorebooks, group chats, and an extension ecosystem. The trade is that you assemble the pieces yourself. Backyard AI takes the opposite philosophy: a single desktop installer for Windows, Mac, and Linux that bundles llama.cpp and a model browser, so you go from “I have a gaming PC” to running a local GGUF model offline with almost no configuration.
Trade-offs
On cost, SillyTavern is free and open-source — you pay only for whatever model you run, whether that is API tokens or just the electricity for a local one. Backyard AI is freemium, with a cloud tier from about $10/month that adds hosted models and cross-device sync on top of the free local app. Neither has a real mobile story: SillyTavern depends on a local Node server, and Backyard is desktop-first.
Which to pick
Choose SillyTavern if you want maximum control and don’t mind wiring up a model back-end; choose Backyard AI if you want local, private character chat with the least possible setup. Plenty of people who outgrow Backyard’s simplicity graduate to SillyTavern for the extensions and lorebooks.