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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.
0| SillyTavern | Sonia | |
|---|---|---|
| Editor score | 4.3 / 5 | 3.7 / 5 |
| Price | Free | Free |
| Price band | Free | Free |
| Free tier | Yes | Yes |
| Price detail | Free 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 content | Optional mature mode | No adult mode |
| Voice | Live calls | No |
| Images | Yes | No |
| Video | No | No |
| Memory | Yes | Yes |
| Custom characters | Yes | No |
| Companion types | Any character | Any character |
| Platforms | Desktop, Web | iOS, Android |
| Runs locally | Yes | No |
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One or both do not publish a comparable monthly price, so we show what each states on its own pricing page: SillyTavern Free, Sonia Free.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.