Open source · v0.1.1 available

Every mode of Grok,
under one sky.

A premium desktop client for the xAI Grok API — chat, image & video, voice, and an agentic coding module, unified behind one hub. Bring your own key.

🔑 Bring your own key 🛡️ No telemetry ⚖️ Apache-2.0
Caelo interface
5
modes, one hub
100%
local & private
0
telemetry
BYO
your own key
Everything xAI, in one place
Five modes. One shared backbone.

Context, history, projects and cost flow across every mode — no more juggling five separate tools.

Chat

Live answers, with receipts.

Streaming chat with live web & X search, vision and document Q&A — every claim backed by clickable citations, with a running token & cost counter.

  • Web & X search with a Sources panel
  • Vision & document Q&A
  • Real per-request cost & token counter
Chat
Code

An agent you can actually trust.

A mini-IDE with a real coding agent: sandboxed file tools, unified diff approval, checkpoints & undo, plan mode, project rules — and parallel subagent teams.

  • Diff approval & 4 trust modes
  • Checkpoints, undo & project rules (CAELO.md)
  • Subagent teams with merge review
Code agent
Image & Video

Create, edit, and keep it all.

Generate and edit images and video through one async job queue, with variations, edit/extend, and a unified searchable gallery scoped to your projects.

  • Text→image/video, edit & variations
  • Server-side video polling — never blocks
  • Unified gallery & per-job cost
Image generation
Voice

Talk to Grok, hands-free.

Text-to-speech replies, dictation, a full voice conversation pipeline, and a low-latency realtime “Live” mode — your key never reaches the browser.

  • Speak (TTS) & Transcribe (STT)
  • Talk pipeline & realtime Live
  • Per-session audio cost
Voice
Programmable
Built to extend.

MCP servers (local & remote), slash commands, hooks, skills, a package marketplace, headless CLI, plus ACP & LSP.

Extensions
Local-first by design
Your keys. Your machine.
🔑

Bring your own key

Sign in with your xAI account or paste an API key. It stays on your machine and is sent only to api.x.ai — never returned by the local API.

🛡️

Zero telemetry

No analytics, no usage reporting. The backend binds to loopback only and every request is token-authenticated and fail-closed.

📂

Open & auditable

Apache-2.0 licensed. The agent is sandboxed to your workspace; writes and shell commands require approval, with a secret-free environment.

Bring your own sky.

Download the signed Windows installer, sign in with your xAI account or paste an API key, and start.