Capability · Framework — agents

Aider

Aider is the most-loved CLI AI coding assistant in the open-source world. It runs in your terminal, operates directly on your git repo, and uses a 'diff-based' edit format that reduces wasted tokens and hallucinated changes compared to whole-file regeneration. It supports Claude, GPT, Gemini, DeepSeek, and local models via Ollama — and regularly tops the Aider leaderboard as a de-facto coding benchmark.

Framework facts

Category: agents
Language: Python
License: Apache 2.0
Repository: https://github.com/Aider-AI/aider

Install

python -m pip install aider-install
aider-install

Quickstart

# In your repo
cd my-project
aider --model anthropic/claude-opus-4-7

# Then at the prompt:
# > Add a rate-limit middleware to the FastAPI app
# Aider reads relevant files, shows a diff, commits on confirm

Alternatives

Continue.dev — IDE extension alternative
Cursor — full IDE experience
Cline — VS Code agent
Claude Code — Anthropic's official CLI

Frequently asked questions

Aider or Claude Code?

Claude Code is Anthropic's official Claude-only CLI with MCP support and agent-mode UX. Aider is model-agnostic, a bit more minimalist, and has a longer track record. Many developers use both — Claude Code for Claude-specific features, Aider when they want to run cheaper or local models.

Does Aider work with local models?

Yes — pointing it at Ollama or any OpenAI-compatible endpoint works. Coding-specific open models (DeepSeek-Coder, Qwen 2.5 Coder) give reasonable results for small changes, though frontier models still win on complex refactors.

Sources

Aider — docs — accessed 2026-04-20
Aider on GitHub — accessed 2026-04-20