AI pair programming in your terminal — multi-file edits, git-aware, and aggressive about token use.
Aider's 'whole file edit' format sends entire files in every message. With repo-map + history, a 30-min coding session can hit 500k tokens easily. Aider's leaderboard runs cost the team $1000s in API fees.
Sign up (free, no card), then generate an sk-cc-… key from your dashboard.
Set environment variables before launching aider.
export ANTHROPIC_API_KEY=sk-cc-your-key-here
export ANTHROPIC_API_BASE=https://claudeapi.cheap/api/proxy
aider --model anthropic/claude-sonnet-4-6Aider keeps every feature. Only the API endpoint changed — your prompts, tools, and behaviour are unchanged.
Best Aider default — fast diff edits
Multi-file refactors, hard bugs
Architect mode (use --architect flag)
Yes. Aider reads ANTHROPIC_API_BASE for custom endpoints. Export it to https://claudeapi.cheap/api/proxy and set ANTHROPIC_API_KEY to your sk-cc-... key.
All three edit formats (diff, udiff, whole) work — they're prompt-engineering tricks aider does locally. The proxy doesn't see them differently.
Yes. Architect mode calls one model to plan and another to edit. Set both ANTHROPIC_API_BASE and OPENAI_API_BASE to our proxy and use the same sk-cc-... key for both.
Free Basic plan, $19 lifetime Pro. Crypto only. No subscription.
Get an API key — free