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Free, open-source AI pair programming in your terminal, with any model you bring.
Pros
- Free software with no markup; pay only model costs
- Model-agnostic, including fully local/offline
- Clean git-native workflow with auto-commits
Cons
- No GUI; terminal-only learning curve
- You manage API keys, costs, and setup yourself
- No vendor support or enterprise governance
✓ Where it shines / best for
- Developers who live in the terminal and want full control over their model choice
- Cost-conscious users who want to pay only raw API rates with no markup
- Open-source enthusiasts who want a transparent, scriptable coding agent
✕ Not the best fit for
- Beginners who want a polished GUI/IDE experience out of the box
- Teams needing managed billing, SSO, and admin dashboards
- Users unwilling to manage their own API keys and costs
Features
- ✓ Free tier
- ✓ API access
- ✓ CLI / terminal
- ✓ Multi-file editing
- ✓ Open source
- ✓ Bring-your-own-key (BYOK)
- ✓ Terminal
- ✓ Git Integration
- ✓ Local Models
- ✓ Pair Programming
- ✓ Repo Map
- ✓ Voice To Code
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Open Source (tool) | $0 | free | Aider itself is free and open source (Apache 2.0). You pay only for the LLM API tokens you use. |
| BYOK API usage | Pay-as-you-go | usage-based | Bring your own API key (Anthropic, OpenAI, DeepSeek, Gemini, OpenRouter, or local models). Cost depends on the model and tokens consumed; no Aider subscription. |
Pricing verified from the official source. Prices change often — confirm on the vendor's site before buying.
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