Agent field guideCoding harness
Aider
shipPaul Gauthier · stable · osi-open-source
Git-native terminal pair-programmer. BYOK, automatic commits, no IDE lock-in.
Visit aider.chat →Open in NoemiumCatalog cardSource verified 2026-08-26
ledger entry · observed by @whysanesanders
Wire up a good model and this beats most paid IDEs for a fraction of the cost. You bring the key and the taste.
layer
Coding harness
maturity
stable
deployment
local
evidence
Source verified
Install
Best for
- Git-native terminal work with automatic commits
- Cheap Chinese or local models instead of a $20 IDE seat
Requirements
- Python 3
- A git repo
- An API key or local model endpoint
Real cost scenarios
Harness only
$0/mo
Aider is free. Model spend is yours.
Models and providers
BYOK — OpenAI, Anthropic, Gemini, local, others
Channels and surfaces
interactive terminal
Security boundary
high privilegeCode and diffs go to the model provider you configure. Commits are local git.
- Automatic commits are a feature — review the log.
- A leaked API key is your incident, not Aider's.
Known limitations
- No first-party GUI.
- Quality is the model you wired, not a bundled "smart" router.
Typed evidence
- 1Availabilityaider.chat/docs/install.htmlchecked 2026-08-26
- 2Installaider.chat/docs/install.htmlchecked 2026-08-26
- 3Requirementsaider.chat/docs/install.htmlchecked 2026-08-26
- 4Pricingaider.chat/docs/install.htmlchecked 2026-08-26
- 5Security / threat modelaider.chat/docs/install.htmlchecked 2026-08-26
- 6Licenseaider.chat/docs/install.htmlchecked 2026-08-26