Aider

Aider is an open‑source AI pair programming assistant designed to work within your terminal and local Git repositories . It connects to major LLMs (e.g., OpenAI GPT‑4o, Claude 3.5/3.7 Sonnet, DeepSeek, Gemini 2.5) for real‑time code editing, commit message generation, linting, and testing . Aider analyzes and maps your entire codebase, supports voice-to-code commands, works with images and web pages for context, and auto‑commits changes to Git with sensible messages . Maintained by Paul Gauthier, Aider is under active development with frequent enhancements in model support (e.g. Gemini, OpenAI o3-pro), expanded language compatibility (MATLAB, Clojure), cloud/local LLM flexibility, and performance improvements . It achieves strong results on code editing benchmarks—84.9% correctness using o3‑pro on the 225‑example polyglot test suite . Users highlight Aider’s cost‑efficiency and productivity gains, with some calling it “legendary” for its speed and utility.