Compare AI tools

	Windsurf A	Cline A	Claude Code S	Perplexity S
Tagline	Codeium's agentic IDE. Cascade agent + strong free tier.	Open-source VS Code agent. Reads + writes + runs.	Anthropic's CLI agent. Opus-powered, operates on your repo directly.	AI search done right. Cited answers, not chat theater.
Category	coding	coding	coding	research
Pricing	Free + $15/mo Pro	Free (open source) + your API costs	Part of Claude Pro/Max/Team plans	Free + $20/mo Pro
Best for	Developers who want Cursor-like power for less money.	VS Code users who want agentic coding without changing IDEs.	Developers who want an agent, not autocomplete. Large refactors, tests, docs.	Replacing Google for any question where you want a cited answer in seconds.
Strengths	Cheaper than Cursor Cascade agent for multi-file tasks Solid free tier	Free extension for VS Code Plan + Act modes Model-agnostic (Claude, GPT, local) Sees terminal output and iterates	Runs locally, edits your actual files Strong on large codebases with 1M context Great at multi-step tasks	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context
Weaknesses	Smaller community Model selection more limited	Can burn tokens fast if not watched Less polished than Cursor	Terminal-based — learning curve Can't be used without Claude subscription	Not a general chatbot Answers can be shallow on complex topics
Kai's verdict	A-tier. Close second to Cursor. If $5/mo matters, start here.	A-tier. Best free agentic option in VS Code. Use with Claude for best results.	S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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