# Aider vs OpenAI Codex — Fit & Features

Canonical: https://trutool.co/compare/aider-vs-openai-codex
Author: Snehil (https://trutool.co/authors/snehil)

Compare Aider and OpenAI Codex by use case, features, limitations, and evaluation questions.

## Compare fit, features, and limitations

### Aider
AI pair programming in the terminal.
Best fit: Developers and engineering teams considering Aider for this job: AI pair programming in the terminal.
- AI pair programming in the terminal
Before you choose: Test repository access, generated-code correctness, test quality, command permissions, and review effort in the exact plan you intend to use.
Pricing: https://aider.chat
- [Read Aider profile](https://trutool.co/tools/aider): Read Aider profile

### OpenAI Codex
AI assistance for software engineering.
Best fit: Developers and engineering teams considering OpenAI Codex for this job: AI assistance for software engineering.
- AI assistance for software engineering
Before you choose: Test repository access, generated-code correctness, test quality, command permissions, and review effort in the exact plan you intend to use.
Pricing: https://openai.com/codex
- [Read OpenAI Codex profile](https://trutool.co/tools/openai-codex): Read OpenAI Codex profile