Gray vs Aider: which terminal coding tool should you use?

Last updated October 20, 2026

Short answer

Choose Aider if you want a dedicated open-source pair programmer that works inside your Git history and commits its edits for review. Choose Gray if you want an even more minimal MIT harness — one static Rust binary instead of a Python environment — that is a general always-on agent you extend with plugins and skills.

	Gray	Aider
What it is	Minimal, always-on AI harness: one Rust binary, open source (MIT)	Open-source AI pair-programming CLI (Apache-2.0), written in Python
Install	One install command; a single static binary, no runtime dependencies	Python package (`pip`/`pipx`/`uv`); runs inside your repository
Working style	General-purpose agent: code edits run through bash plus the plugins and skills you add	Git-centric pair programming: edits land as commits and diffs you can review, revert or amend
Models	Any OpenAI-compatible provider with your own API key; local models through Ollama; Claude Pro/Max and ChatGPT plans through official plugins	Most providers through your own API keys, including local models through Ollama
Runs 24/7	Yes — the gateway runs Gray as a user service, with cron and app connections	Interactive sessions in your terminal
Security model	Runs the model's shell commands with your user's privileges; no sandbox or approval prompt by default. The official `permissions` plugin adds approvals	Runs commands and edits with your privileges; asks before running suggested shell commands
Price	Free (MIT); you pay your model provider. Hosted Voyager plan $77/month, not yet open	Free (Apache-2.0); you pay your model provider

Is Gray better than Aider?

For Git-integrated pair programming, Aider is the stronger tool — its whole workflow is built around commits, diffs and repo context. Gray is the better fit if you want a smaller install, an agent that keeps working when no terminal is open, or tasks beyond coding.

Which is easier to install, Gray or Aider?

Gray ships as one static binary installed with one command. Aider is a Python package, so it needs a Python environment (usually via pipx or uv) before it runs.

Can both run on local models?

Yes. Both connect to Ollama and other OpenAI-compatible servers, so either can work with models on your own hardware; see Providers & models for Gray's setup.

When should you choose Aider instead?

Choose Aider if you want every AI edit to land as a reviewable Git commit, or you prefer its mature map of your repository for context. It's a dedicated pair programmer; Gray is a general agent harness.

Sources

Competitor details are taken from the sources above as of the date at the top of this page. Products change quickly — if something here is out of date, open an issue on GitHub.