Compare AI tools

	Cline A	Gemini A	Claude Code S	NotebookLM S
Tagline	Open-source VS Code agent. Reads + writes + runs.	Google's answer. Best integrated with Workspace + free for a lot.	Anthropic's CLI agent. Opus-powered, operates on your repo directly.	Google's research notebook. Turns your docs into a podcast.
Category	Coding	Chatbots	Coding	Research
Pricing	Free (open source) + your API costs	Free + $20/mo Advanced (bundled with 2TB Drive)	Part of Claude Pro/Max/Team plans	Free
Best for	VS Code users who want agentic coding without changing IDEs.	Anyone already on Google, research tasks, summarizing long documents.	Developers who want an agent, not autocomplete. Large refactors, tests, docs.	Students, researchers, anyone with a stack of PDFs or a topic to learn.
Strengths	Free extension for VS Code Plan + Act modes Model-agnostic (Claude, GPT, local) Sees terminal output and iterates	Native Google Workspace integration Very long context (1M+) Deep Research feature Free tier is generous	Runs locally, edits your actual files Strong on large codebases with 1M context Great at multi-step tasks	Upload anything, ask questions, get cited answers Audio Overview turns docs into a 10-min podcast Great for studying
Weaknesses	Can burn tokens fast if not watched Less polished than Cursor	Writing quality trails Claude Over-refusals on edge content UI is cluttered	Terminal-based — learning curve Can't be used without Claude subscription	Google-only Can be slow on large corpora
Kai's verdict	A-tier. Best free agentic option in VS Code. Use with Claude for best results.	A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.	S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.	S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.
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