---
title: "Reason — autonomous software engineer for GitHub"
description: "Connect a repo, assign issues, and Reason's cloud agents open evidence-backed pull requests."
url: "https://reasonmachines.company/"
---

# Reason Machines is building the world’s best coding agent.

In the new era of harnesses, moving fast on the best way to utilize new models and their capabilities is everything.

Our principle is minimal and maximal harnesses: minimal so we stay the fastest to act, and maximal so we use frontier models for their strengths.

New: [Reason Agent 1.0 on DeepSWE](/blog/reason-agent-deepswe)

[contact@reasonmachines.company](mailto:contact@reasonmachines.company)

Reason is an autonomous software engineer for GitHub. Connect a repository, assign issues, and Reason's cloud agents open evidence-backed pull requests with screen recordings, logs, and review-ready diffs. People drive Reason from the web app at https://reasonmachines.company/agents; programmatic per-user access is available through the HTTP API documented at https://reasonmachines.company/llms.txt.

## Pages

Every page is also available as clean Markdown: append `.md` to any URL, or send `Accept: text/markdown`. The entire site as one file: https://reasonmachines.company/llms-full.txt

### Blog

- [Reason for macOS](https://reasonmachines.company/blog/ara-for-macos.md): Run cloud sessions and let Reason work with your local files, tools, and ports.
- [Introducing Reason Agent 1.0](https://reasonmachines.company/blog/reason-agent-deepswe.md): Our first results on DeepSWE v1.1. Competitive with frontier harnesses, with up to 39% lower median solving time against our benchmark baseline.
- [Rust harness wars: grok-build vs codex](https://reasonmachines.company/blog/rust-harness-wars.md): We cloned xAI's grok-build and OpenAI's codex and read both line by line, twenty subsystems each, to see where two labs building the same coding agent actually diverge.
- [Reason for Startups](https://reasonmachines.company/blog/yc.md): Current and alumni YC companies get $1,000 in credits to start coding. Open the Reason deal on Bookface and follow the redemption instructions to claim them.
- [Building the software factory](https://reasonmachines.company/blog/about.md): We are building the software factory we wanted as engineers: fast enough to keep up with ideas, careful enough to trust with real repositories.

### Legal

- [Terms of Service](https://reasonmachines.company/terms-of-service.md): Terms governing Reason Machines websites, applications, APIs, cloud sessions, and local-runtime controls.
- [Privacy Policy](https://reasonmachines.company/privacy-policy.md): How Reason Machines collects, uses, shares, retains, and deletes information.
- [Account Deletion](https://reasonmachines.company/delete-account.md): How to request deletion of your Reason account and associated data.