Compare AI tools

	Aider A	Ollama S	Perplexity S	Claude Code S
Tagline	Terminal-based AI pair programmer. Git-aware, model-flexible.	Run LLMs locally. One-line install, GUI optional.	AI search done right. Cited answers, not chat theater.	Anthropic's CLI agent. Opus-powered, operates on your repo directly.
Category	coding	dev platform	research	coding
Pricing	Free (open source) + whatever API you use	Free + open source	Free + $20/mo Pro	Part of Claude Pro/Max/Team plans
Best for	Developers who want open-source tooling with full control.	Devs wanting offline/local LLMs for privacy or experimentation.	Replacing Google for any question where you want a cited answer in seconds.	Developers who want an agent, not autocomplete. Large refactors, tests, docs.
Strengths	Works in any terminal Auto-commits changes with meaningful messages Works with any model (Claude, GPT, local) Minimal learning curve	Run Llama, Mistral, Qwen, etc. on your laptop Simple CLI + API Hardware-aware (picks the right quant)	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Runs locally, edits your actual files Strong on large codebases with 1M context Great at multi-step tasks
Weaknesses	Terminal-only Less agentic than Claude Code Setup on Windows is fiddly	Needs beefy laptop for larger models Speed way behind cloud APIs	Not a general chatbot Answers can be shallow on complex topics	Terminal-based — learning curve Can't be used without Claude subscription
Kai's verdict	A-tier. The right answer if you want open-source + terminal-native + model-agnostic.	S-tier for local inference. If you care about privacy or want to tinker, install this today.	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.	S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.
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