Viby
Get Viby

Switch agents, not windows.

Viby runs Claude Code, Codex and opencode on your own subscriptions, with files, diffs and a terminal beside the chat.

Download Viby See how it works
Next reply from
invoice-api / New session

What should we build in invoice-api?

Opus 5.5 Accept edits
–

Works with

  • Claude Code
  • Codex
  • opencode
Go
  • Excel
  • Word
  • Power BI
  • Blender

How do I get started?

Viby

Three steps, and I handle the setup.

  1. Install Viby

    One installer. On the first launch I download my engine once, about 76 MB, so there is no Node.js or PATH to set up.

    Download Viby macOS available · Linux coming soon

  2. Sign in

    One free Viby account. You sign in once, in your browser, with GitHub, Google or an email code.

  3. Connect your models

    Free models work right away. If you already use Claude Code or Codex, I sign in to the same plan from the app. Then open a project folder and ask.

What else is in the window?

Viby

Everything I need to do the work, and everything you need to check it.

  • Every change, beside the chat

    Each edit I make lands in Changes as a diff you can read before you keep it. Files, a terminal, git and a browser open in tabs next to it.

  • Agents inside your apps Go

    I find Excel, Word, Power BI and Blender on your computer and give every engine the tools to work in them. Office and Power BI need Windows.

  • You choose how much I may do

    Pick a level per project and I write the real permission settings for the engine that runs. Try the menu.

  • See what fills the context

    The ring in the composer opens the whole window: messages, tools, connectors and free space. Estimates are marked with ~.

What does it cost?

Viby

Code for free. Go puts your agents to work in your desktop apps.

Free

$0

For coding with Claude Code, Codex or opencode.

  • Switch agents in one chat, with context carried over
  • Free models or your Claude / ChatGPT plan
  • Review file edits and Git diffs
  • Terminal and app previews beside your chat
Download Viby

Go

$9/month

Everything in Free, plus work inside your apps.

  • Edit Excel sheets, formulas and charts
  • Create formatted Word documents and PDFs
  • Query Power BI data and write DAX measures
  • Build Blender scenes, materials and lighting
Get Go

AI model usage follows your provider's pricing and limits. Desktop apps must be installed; Excel, Word and Power BI require Windows.

Anything else I should know?

Viby

These come up the most.

Is Viby free?

Yes. Free includes all three engines and the coding workspace. Go adds work in Excel, Word, Power BI and Blender for $9 a month. AI model usage follows your provider's pricing and limits.

Do I need my own API keys?

No. Free models work without a key. For Claude or ChatGPT models, sign in with the account you already have, right from the app.

Do you replace Claude Code or Codex?

No, I run them. I start the real CLIs, so your plan, project instructions and MCP servers keep working like they do in the terminal.

Which systems do you run on?

Windows 10 and 11, 64-bit. The macOS build for Apple Silicon is available as an early preview. Linux is coming soon.

Do I need a Viby account?

Yes, a free one. You sign in once, the first time you open the app.

Where does my code go?

It stays on your computer. Chats and settings live in your user folder, and code goes only to the model provider you pick.

One window. Three agents.

Open a folder and ask.
Switch agents mid-chat, context and all.

Download Viby
Other platforms

Free to start · Windows and macOS