SillyTavern

What is SillyTavern?

Local chat interface for any language model.

Who is SillyTavern best for?

SillyTavern is best for AI hobbyists who want a locally installed chat interface with deep control over prompts and characters.

• Character and roleplay chats

  It is built around character cards, with group chats where several bots talk to you and each other, and personas that describe you to the AI.

• Switching between model backends

  One interface connects to AI Horde, KoboldAI, Tabby, OpenAI-compatible APIs and many other local or cloud backends.

• Prompt tinkerers

  Detailed generation settings, community presets, World Info lore entries and its own scripting language give close control over every prompt.

• Chats with documents and media

  Built-in RAG adds your documents to a chat, and extensions add image generation, text-to-speech, translation and web search.

How much does SillyTavern cost?

SillyTavern is free and open source, with no paid tier; the only cost is any paid model API you choose to connect it to.

SillyTavern has no pricing page or hosted service: you install it from GitHub, and its makers say it will always be free and do not take donations for the project. Any cost comes from the model backend you connect, and AI Horde works out of the box for quick chats. Full pricing on docs.sillytavern.app. We checked these prices on 28 Sep 2026.

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Is SillyTavern open source?

Yes. SillyTavern's code is public under the AGPL 3.0 licence, so you can run it on your own server.

Host it on a serverHostinger and Railway set it up on a server for you with a one-click install.

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What are the best SillyTavern alternatives?

SillyTavern is an open source alternative to Kajiwoto and Rubii.

KajiwotoFree

Create AI characters and chat with them.

RubiiFree

Roleplay worlds with characters you design and chat with.

Questions about SillyTavern