Clear. Yours.

Just the Way You Want It.

Shape it your way – transparent, customizable, and yours to keep.

Personalized Chat

Customize your theme, model name, and appearance – make chatting feel personal.

Complete Prompt Transparency

Control your prompts – see and edit them anytime.

Save What Truly Matters

Keep your favorite chats close, always one click away.

Explore Multiple Conversation Paths

Return to past topics and take the conversation somewhere new.

Make It Yours

Choose from 6 beautiful presets — or go beyond. Adjust RGB color and opacity exactly the way you like. Not limited. Always yours.

Personalize the experience with flexible layout and behavior settings. You can even choose your AI companion's profile image and name.

Theme: 6 presets or fully custom color + opacity
AI Profile: Customize name and profile image
Text Size: Medium or Large
Layout: Compact or Large View
Enter Key Behavior: Send on Enter or Shift+Enter

Full Control, No Surprises

Prompts are transparent and user-controlled. Apply a default prompt across all chats, or set a custom one per chat. If you don’t apply any prompt, nothing hidden runs behind the scenes.

Default Prompt: Automatically applies to all chats unless overridden
Per-Chat Prompt: Tailor each conversation with a different instruction
No hidden system prompt: Only what you choose is applied

Before: hallucination present

After: grounded response with applied prompt

Save What Matters

Whether it’s a key message or an entire chat, Withsy helps you keep track of what’s important.

Save Messages: Bookmark key messages and view them inside the chat
Global Saved View: Access all saved messages across all chats in one place
Star Chats: Mark entire conversations as important and find them quickly

Branch Out Your Thoughts

Conversations don’t have to be linear. Withsy lets you branch from any message and explore multiple paths — just like Git.

Explore and branch conversations seamlessly