Built for what's next

The editor that thinks
while you type

Kira is a multiplayer code editor with an AI pair programmer built into every keystroke — not bolted on after. Collaborative, fast, and eerily perceptive.

Download for macOS Read the Docs

Available for macOS · Linux · Windows  ·  Free during beta

server.ts ✦ Kira AI
server.ts
auth.ts
db.ts
1import { serve } from "@hono/hono"
2import { db } from "./db"
3
4const app = new Hono()
5
6// GET /users — returns paginated users from db
7app.get('/users', async (c) => {
8  const page = Number(c.req.query('page')) || 1
9   const users = await db.query.users.findMany({ limit: 20, offset: (page - 1) * 20 })_
10  return c.json({ users, page })
11})
12
13serve({ fetch: app.fetch, port: 3000 })
✦ Kira suggestion — Tab to accept
Tab ↵ Esc ✕

AI-first editing

Inline completions, multi-file edits, and terminal commands — all driven by the same context window your team shares.

Native multiplayer

Real-time collaborative cursors, channel threads, and screen sharing — built into the editor, not a plugin.

Zero-latency core

Written in Rust. The UI never blocks. Files open instantly. Syntax highlighting stays ahead of your keystrokes.

Your AI knows the whole codebase

Kira doesn't just autocomplete lines — it understands your architecture, your conventions, and your git history.

See all AI features

Context that actually scales

Attach your entire monorepo, open pull requests, and documentation links to a single AI thread. Kira synthesizes them so you don't have to.

Learn about context windows ›
Codebase indexing +
Kira indexes your entire project in the background using tree-sitter and a local embeddings model. No data leaves your machine by default.
Slash commands +
Use /edit, /explain, /test inline in any file. Slash commands compose with your project context automatically.
Model selection +
Switch between Claude, GPT-4o, Gemini, or local Ollama models per-thread. Kira remembers your preference per project.
AI Thread — refactor auth.ts
Y
you

Refactor the JWT verification in auth.ts to use a middleware pattern and add error logging.

✦
Kira

I'll extract JWT verification into an authMiddleware and pipe errors through your existing logger utility. This affects 3 files:

~ auth.ts
+ middleware/auth.ts
~ server.ts

Collaborate without switching apps

Channels, threads, and live sessions are first-class citizens — not afterthoughts bolted onto a text editor.

Live sessions

Share your editor state with one click. Multiple cursors, same buffer, real-time — like Google Docs but for code.

Inline threads

Leave threaded comments anchored to any line. Review, resolve, and re-open discussions without leaving the file.

Screenshare mode

Let teammates follow your cursor or take control. Zero latency, no third-party installs, no browser tab juggling.

Trusted by engineers shipping at speed

Numbers from our public beta, measured across 60 days.

47K+

Active developers

2.1M

AI edits accepted

38%

Faster PR cycle

<50ms

Input latency (p99)

What engineers are saying

“We cut our code review time by a third in the first week. The inline thread comments alone justified the switch.”

Arjun Mehta

Staff Eng, Zomato

LINEAR

“We shipped our entire design system refactor using Kira's multi-file AI edit. What we estimated as a two-sprint project shipped in four days. The codebase context is something we hadn't seen in any other tool — it actually understood our component conventions without us having to explain anything. The multiplayer layer meant our design and frontend teams were working in the same editor simultaneously for the first time.”

Karri Saarinen

CEO & Co-founder

“The Rust-based core is not marketing. Opening a 200k line repo feels instant. I went back to VS Code and couldn't.”

Priya Chandrashekhar

Principal Eng, Razorpay

“Switched our whole team in a day. The AI slash commands feel like having a senior dev watching every file.”

Tom Withers

CTO, Cuvama

“I was skeptical of AI editors. Kira changed that. It doesn't hallucinate my codebase — it indexes it first.”

Lena Fischer

Senior Eng, Neon DB

A growing extensions ecosystem

Extensions are first-class — they can access AI context, multiplayer state, and the full Kira API.

Create extension › View all ›

Your fastest editor is
waiting for you

Free during beta. No credit card. Ships for macOS, Linux, and Windows.

Download for free Read the changelog