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SillyTavern

SillyTavern
open source / Overall score: 3.0

Self-hosted chat front end for character and roleplay use, forked from TavernAI in 2023. It runs on Node.js and connects to many backends including KoboldAI, OpenAI, Claude and Mistral, with deep prompt engineering, lorebooks, group chats, image generation, text-to-speech, extensions and a visual-novel mode.

Openness

5 high confidence
5.0
license
AGPL-3.0(OSI, copyleft)
source
public(github.com/SillyTavern/SillyTavern)
self-host
only(local install)
extensions
third-party
core features withheld
no

AGPL-3.0 (OSI-approved copyleft), full source public, self-host only, fully open. No proprietary/SaaS tier.

  • https://docs.sillytavern.app/ recorded 2026-09-29

    The docs home page states "SillyTavern is a free and open-source project released under the" AGPL-3.0 License link, and that it "will always be free and open-sourced". Searched the body for a paid tier, hosted service, license key or enterprise edition: none.

  • https://github.com/SillyTavern/SillyTavern recorded 2026-08-13

    AGPL-3.0; public source; v1.18.0 (3 May 2026); local UI for LLM/image/TTS backends

Adoption

3 low confidence
3.0

No download, install or active-user count exists for this self-hosted app, which collects no telemetry, so GitHub stars are the only honest signal available. Stars alone cannot place this higher, because a star reflects attention rather than use, though SillyTavern's real enthusiast and roleplay community is likely larger than stars alone can show.

Capability

3 medium confidence
3.0

Feature-rich for its niche, broad backend coverage, image-gen/TTS, extensions, character/roleplay tooling. Specialized toward roleplay rather than general-purpose assistant work; mid-tier on the general chat-UI matrix.

  • https://docs.sillytavern.app/ recorded 2026-10-07

    The documentation home describes "a locally installed user interface that allows you to interact with text generation LLMs, image generation engines, and TTS voice models", lists backends including "OpenAI-compatible API, KoboldAI, Tabby, and many more", key features such as World Info and "Built-in RAG support", and extensions for image generation and "Text-to-speech for AI response messages", with more downloadable from its extensions menu.

  • https://github.com/SillyTavern/SillyTavern recorded 2026-08-31

    multi-backend, image-gen, TTS, extensions, Visual Novel mode

Verified 2026-09-27