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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.

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Visit SillyTavern ↗ ↗Visit Microsoft Copilot ↗ ↗
SillyTavernMicrosoft Copilot
Editor score4.3 / 54.0 / 5
PriceFree$20/mo
Price bandFree$10–20/mo
Free tierYesYes
Price detailFree 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 contentOptional mature modeNo adult mode
VoiceLive callsLive calls
ImagesYesYes
VideoNoNo
MemoryYesYes
Custom charactersYesNo
Companion typesAny characterAny character
PlatformsDesktop, WebWeb, iOS, 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

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.

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