---
title: "AI software engineer"
description: "Reason works through your code, tools, and tests, on your computer and in the cloud."
url: "https://reasonmachines.com/product"
section: "Product"
---

# Your team’s AI software engineer.

## What is Reason?

Reason is an AI software engineer. Describe a task, give it the relevant project and tools, and follow the work through code changes, tests, and review.

## Where does Reason work?

Use Reason on the web, connect your computer, or run tasks on a cloud machine. Your project determines the environment and tools available to the agent.

## Can I use my own models and tools?

Reason supports model subscriptions and API keys, along with plugins and integrations for the services your team uses. Available models and connections are shown in the app.

## Do I need to sign in to try it?

You can draft a task and explore Reason before signing in. Sign in when you are ready to send the task or connect a project. Your draft stays with you.

[Engineering](/use-cases/engineering) · [Operations](/use-cases/operations) · [Research](/use-cases/research) · [Pricing](/pricing)