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SillyTavern vs Sonia

SillyTavern edges Sonia on our editorial score (4.3 vs 3.7), but SillyTavern is the better fit if you want live voice calls and image sharing and custom characters; Sonia has no clear edge there.

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Visit SillyTavern ↗ ↗Visit Sonia ↗ ↗
SillyTavernSonia
Editor score4.3 / 53.7 / 5
PriceFreeFree
Price bandFreeFree
Free tierYesYes
Price detailFree and open source under AGPL-3.0. You pay only for whichever model API you connect.No public pricing page (checked 2026-09-30); subscription appears in-app.
Adult contentOptional mature modeNo adult mode
VoiceLive callsNo
ImagesYesNo
VideoNoNo
MemoryYesYes
Custom charactersYesNo
Companion typesAny characterAny character
PlatformsDesktop, WebiOS, Android
Runs locallyYesNo

SillyTavern — our take

If you want total control and zero subscription, this is where the advanced users live.

  • Complete control over prompt and memory
  • Works with local or hosted models
  • Free forever

Sonia — our take

Conversational mental-health support with CBT underpinnings; pricing stays inside the app.

  • Always-available emotional support
  • Free tier to start
  • Private and judgment-free positioning

SillyTavern vs Sonia — common questions

Which is cheaper, SillyTavern or Sonia?

One or both do not publish a comparable monthly price, so we show what each states on its own pricing page: SillyTavern Free, Sonia Free. Confirm at checkout, since regional pricing varies.

Which one has a free tier?

Both do — you can try either without paying.

Which remembers conversations better?

Both keep context across sessions. The practical difference is elsewhere: voice support differs between them.

Which handles adult content differently?

SillyTavern: Optional mature mode. Sonia: No adult mode. This directory is SFW — we record whether a mature mode exists so you know before signing up, and we describe no explicit material.

Prices change. Confirm the current price and available plans on each site before subscribing. Affiliate disclosure.