Darce vs Aider
Updated October 2026
Aider is one of the original terminal AI pair programmers, and a respected one. Darce and Aider overlap a lot but take different approaches to running commands and reverting changes.
Facts about Aider are as of October 2026 and based on its public documentation; check its docs for the latest.
At a glance
| Darce | Aider | |
|---|---|---|
| License | MIT | Apache 2.0 |
| Style | Autonomous agent: plans, edits, runs commands and tests, verifies | Pair programmer: you add files to the chat, it edits them; you can ask it to run commands and tests |
| Models | 250+ via OpenRouter, no provider keys needed | Most LLMs via your own API keys, including local models |
| How you pay | Free tier, or $15 / $65 per month plans | Free tool; you pay your model providers |
| Reverting | Snapshots before every step; /undo covers files changed by shell commands; never touches your branch | Commits each change to git; /undo reverts its last commit |
| Risky commands | Scored per command; risky ones ask with the reason | Asks before running shell commands it suggests |
| Parallel work | /swarm, /derby | Single session |
Who Aider is for
Aider is great if you like a git-native workflow where every AI edit becomes a commit you can inspect, and you want tight control over which files are in context. It has a mature repository map and supports a very wide range of models through your own keys.
Who Darce is for
Darce suits you if you want the agent to drive more of the loop: find the files, make the change, run your tests and fix what fails, while asking before anything risky. Its checkpoints live in private git refs, so it doesn't add commits to your branch, and /undo also reverses files that shell commands changed. You also get /swarm for parallel agents and /derby for model races, and you can start with npx darce-cli without any keys.
Bottom line
Pick Aider if you want a commit per change and hands-on control of context. Pick Darce if you want an agent that runs the full loop with risk-scored approvals and undo that covers everything it did.
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