Aider
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AI pair programming in the terminal — edit existing codebases with LLMs
Key Features
Single Agent Streaming Short-Term Memory Long-Term Memory Code Execution File System Access CLI Self-Hosted
Community Feedback
Strengths
- Git-first philosophy (every edit is a commit)
- Massive model support (100+ LLMs)
- 4x productivity reported by users
- Strong community
- Works with existing codebases
Weaknesses
- ~$0.70/command costs
- No formal security certifications
- Single-session only
- No native MCP support
- Terminal-only
Aider Details
| Organization | Aider AI (Paul Gauthier) |
| Organization Type | Individual |
| Funding | Open source only |
| Category | Ready-to-Use |
| Subcategory | Code generation |
| Deployment | Self-Hosted |
| Primary Language | Python |
| Runtime | Python 3.10+ |
| License | Apache-2.0 |
| Commercial Use | Permissive |
| Install Command | pip install aider-chat |
| GitHub Stars | 42,330 |
| GitHub Forks | 4,060 |
| Release Cadence | Weekly |
| Maturity | Mature |
| Pricing Model | Free |
| Free Tier | Fully open-source Apache-2.0 |
| Self-Hosted Free | Yes |
| Cost Model | free + LLM costs (~$0.70/command) |
| Community Size | Very large (42k stars) |
| Community Activity | Very active |
| Sentiment | Very positive |
| GPU Required | No |
| Research Date | 2026-03-24 |
| LLM Providers | GPT-5, Claude 4, Gemini 2.5, DeepSeek R1, Grok-4, local models |
| API Keys Required | LLM provider API key |
Use Cases
- AI-assisted code editing
- Git-integrated pair programming
- Codebase refactoring with AI
- Multi-model code generation
When to Use
Best for: Developers wanting git-integrated AI pair programming with any LLM
Avoid when: Need rich plugin/extension ecosystem or visual IDE
Original data from HuggingFace, OpenCompass and various public git repos.
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Release v20260328a