Aider is an open-source AI pair programming tool that works in your terminal. It can edit multiple files, understand your git history, create commits, and works with virtually any LLM via API. Known for its practical approach to real-world coding tasks and excellent benchmark scores.
Bars show editorial scores from hands-on testing. Percentages showAider's live community win rate in head-to-head votes.
Runs on: macOS · Linux · Windows (terminal)|Best for: Developers who want a flexible, BYO-model terminal coding tool
Aider takes a custom OpenAI-compatible base URL. Point it at Standard Compute and get unlimited LLM compute at one flat monthly price — no rate limits, no per-token billing.
Yes — Aider itself is free and open source. You pay only for model usage through whatever API key you connect. Paired with a flat-price plan via Standard Compute, heavy daily use costs the same as light use.
Aider is best at disciplined, git-native code editing: you describe a change, it edits the right files and commits with a clean message. Its benchmark results on real code-editing tasks are among the best of any open-source tool.
Aider's own leaderboard consistently shows frontier models (Claude's strongest tiers and equivalents) performing best. Budget models work for small edits but degrade on multi-file changes. Since Aider is BYO-model, pairing it with strong models on a flat-price plan is the sweet spot.
