Cerin
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Cerin 1.0 is here — now on Linux

The agent and the editor,finally one.

Plan, act, or hand it to Autopilot. Cerin reads your codebase, runs the terminal and ships changes you can review line by line — with any model you choose.

Download CerinAll platforms

v1.0 · macOS · Windows · Linux · Free to start

Describe what to build…

plan
zsh · ~/cerin-source

One window

Everything the work needs, in one place.

Terminals, tasks, research, coding, your own edits and every model — sharing one context instead of six tabs.

A terminal the agent can actually drive.

Cerin runs your test suite, reads the failure, edits the code and runs it again — in the same shell you use, with every command visible and interruptible.

  • Real PTY, your shell and env
  • Interrupt or take over any time
  • Output feeds straight into context
zsh · ~/checkoutlive

A new way to build, in their words.

A note from our CEO

“Every tool asked engineers to choose: a great editor, or a capable agent. We refused to choose. Cerin is the first time both live in one window, share one memory, and answer to the same keystroke — and it is only the beginning.”

Abrham Asbe

CEO & Lead Engineer, Cerin

  • Independent review
    “I gave it our deployment pipeline expecting a demo. It mapped 300 services, found two race conditions our team had chased for a month, and opened a clean PR. I reviewed it as an outside skeptic — I came out a customer.”

    Brook Solomon

    CEO, EthioDeploy

  • “My jaw genuinely dropped the first time Autopilot fixed a failing test, re-ran the suite and explained the bug back to me. I stopped switching between my editor, terminal and chat that same afternoon.”

    Meron Sahle

    Software Engineer

  • “Switching from one model to another mid-chat without losing context feels unfair. Plan mode is how I want to think, and the line-by-line diffs mean I trust every change I merge.”

    Blen Ayalew

    Software Engineer

Bring any model

Every frontier lab, one picker.

Use Cerin's hosted models, plug in your own keys, or point it at any OpenAI-compatible endpoint. Switch per task, per chat, or mid-conversation.

Supported providers: Anthropic, OpenAI, Meta, Kimi, OpenRouter, Alphabet, SpaceX, Together AI.
  • Anthropic
  • OpenAI
  • Meta
  • Kimi
  • OpenRouter
  • Alphabet
  • SpaceX
  • Together AI
  • Anthropic
  • OpenAI
  • Meta
  • Kimi
  • OpenRouter
  • Alphabet
  • SpaceX
  • Together AI

Why Cerin

The first agent and IDE that are actually one.

Other tools bolt a chat panel onto an editor, or wrap an agent in a terminal. Cerin was designed from the first line as a single system: the agent edits in your editor, runs in your terminal and remembers what you did by hand. You decide how much it does on its own.

An autonomy dial, not an on/off switch.

Pick a mode to see how Cerin behaves.

Cerin reads the repo and proposes a step-by-step plan. Nothing is edited until you approve it.

tokens of shared context
1M
tokens of shared context
model providers
8+
model providers
native platforms
3
native platforms

One context, everywhere

Editor, terminal, research and agent share up to 1M tokens — nothing is copied between tools.

Any model, your keys

Anthropic to Together AI, hosted or bring-your-own. Swap per task without restarting the chat.

Review, then ship

Every change is a diff with checkpoints. Accept by hunk, roll back in one click, open the PR.

Native, not a webview tab

A real desktop app for macOS, Windows and Linux that opens large monorepos without stalling.

Private by default

Tokens stay in your OS keychain. Cerin only sees the repositories you explicitly choose.

Ship your next feature today.

Free to download. Sign in with GitHub inside the app — the same one step whether you are new or returning.

Download CerinGet started