Your AI engineer,
on your desktop
on your desktop
A native app powered directly by the Cosine CLI. Works alongside any
editor. Available on Mac, Windows, and Linux.
Download for Mac
Checkpointing
Every agent turn is a lightweight git commit. Undo any change instantly — nothing is permanent until you say it is.
Sub-agents
In Swarm mode an orchestrator spawns specialized child agents that work in parallel — breaking down the task and executing simultaneously.
Todo Tracking
Cosine builds and maintains a live task list for every complex job. Watch items tick from pending to done in real time.
Lock in without getting locked in
Cosine Desktop ships with the full model menu and stays model-agnostic
by design.
Codex Pro Claude Sonnet 4 Claude Opus 4 Kimi K2.5 Gemini 2 Pro
The CLI is the app.
Not a wrapper around it.
Not a wrapper around it.
Most desktop agent apps are thin frontends over an API. Cosine Desktop
is different: the Go CLI compiles directly into the app binary. There's
no subprocess, no JSON bridge, no abstraction tax. Every capability
available in the terminal is available in the desktop with zero
overhead.
We chose native OS WebView — meaning no bundled browser runtime and no
heavyweight install footprint. The app is fast because we didn't
compromise on the fundamentals.
● DESKTOP — ACTIVE
→ Go core embedded in the app binary
No subprocess bridge...
No heavyweight browser runtime...
→ Native OS WebView
Multi-window sessions ready
Same agent, zero overhead
→ Platform-connected
Learn more →
As many sessions as you need.
Slack took ten years to ship multi-window. VS Code shipped it last
year. Cosine Desktop has it at launch — because working on more
than one thing at once isn't a power-user edge case, it's Tuesday.
Every window is an independent agent session. Different branches,
different models, different tasks — all running concurrently on
your machine. Compare approaches, keep context separate, close
what you don't need.
No limit.
Four Modes.
For Every Kind of Work.
For Every Kind of Work.
From scoping work to autonomous execution, you can choose how much
oversight you want and switch modes as the task evolves.
Auto
Reads, writes, runs, and iterates without stopping. Set the task and walk away.
Plan
Research broad changes before committing to edits or execution.
Swarm
Split bigger efforts into coordinated agent workstreams without losing context.
Manual
Asks before making changes. You stay in control.
One account · one toolchain · no migration
Move between surfaces any time
Start local. Scale when you're ready.
Cosine is one product across three surfaces: CLI, Desktop, and Cloud.
Each extends the last — nothing is thrown away when you go further.
The desktop is the hub. When you want to run tasks overnight, spin up
20 agents in parallel, or keep working from your phone while your
laptop runs a long job — the cloud is already connected. Same account,
same context, no migration.
- → CLI for terminal-native power users and scripting
- → Desktop for rich interaction, multi-window, visibility
- → Cloud for parallel agents, remote execution, cross-device continuity
- → All three share the same account and model settings
How Cosine desktop compares.
Not every desktop agent is the same. The differences are
architectural.
Requires editor switch
Native app
Model-agnostic
Local + cloud unified
Multi-window
MCP tool integrations
Works with any editor
Cosine Desktop
Other agents
Partial
Limited
Partial
Partial
