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SillyTavern vs Microsoft Copilot
SillyTavern edges Microsoft Copilot on our editorial score (4.3 vs 4.0), but SillyTavern is the better fit if you want custom characters; Microsoft Copilot has no clear edge there.
0| SillyTavern | Microsoft Copilot | |
|---|---|---|
| Editor score | 4.3 / 5 | 4.0 / 5 |
| Price | Free | $20/mo |
| Price band | Free | $10–20/mo |
| Free tier | Yes | Yes |
| Price detail | Free and open source under AGPL-3.0. You pay only for whichever model API you connect. | Copilot Pro $20/mo; the free tier already covers chat, image generation and voice (checked 2026-09-30). |
| Adult content | Optional mature mode | No adult mode |
| Voice | Live calls | Live calls |
| Images | Yes | Yes |
| Video | No | No |
| Memory | Yes | Yes |
| Custom characters | Yes | No |
| Companion types | Any character | Any character |
| Platforms | Desktop, Web | 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
Microsoft Copilot — our take
The free assistant already on every Windows PC and in Edge; Pro unlocks priority models for $20/mo.
- Free on every Windows PC and Edge
- Voice and image generation included
- Deep Microsoft 365 integration on Pro
SillyTavern vs Microsoft Copilot — common questions
Which is cheaper, SillyTavern or Microsoft Copilot?
SillyTavern is the cheaper of the two at Free, against $20/mo for Microsoft Copilot.
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. Microsoft Copilot: 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.