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Aider

by Aider (open source)

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 wanting full control and low cost
  • Local/offline model workflows
  • Git-disciplined terminal users

✕ Not the best fit for

  • Non-technical users needing a GUI
  • Teams wanting managed support and admin controls

Features

  • ✓ Terminal-based AI pair programming
  • ✓ Repo mapping for whole-codebase context
  • ✓ Direct file edits with automatic git commits
  • ✓ BYOK with any LLM (Claude, GPT, DeepSeek, local)
  • ✓ Local model support via Ollama
  • ✓ Voice-to-code and image inputs
  • ✓ Strong SWE-bench performance
  • ✓ Fully open source and scriptable

Pricing

PlanPriceBillingNotes
Open Source$0one-timeFree software (Apache-2.0); you pay only your chosen model's API/usage costs
BYOK model usageUsage-basedtokenPay your LLM provider directly; ~$10-15/mo typical with Claude Sonnet, $0 with local models

Pricing verified from the official source. Prices change often — confirm on the vendor's site before buying.

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