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11.2Tool Comparison
| Capability | Claude Code (CLI) | GitHub Copilot | Cursor |
|---|---|---|---|
| Context window | 200K tokens | File + open tabs (smallest of the three) | Large (codebase-indexed) |
| Multi-file awareness | Yes (agent reads files) | Limited (open tabs) | Yes (embeddings index) |
| Test framework detection | Reads config files | Infers from imports | Reads project config |
| Run and iterate | Can execute tests, see failures, fix | Cannot execute | Can execute via terminal |
| Spec-to-test | Excellent (paste full spec) | Weak (limited context) | Good (attach files) |
| Codebase style matching | Reads existing tests as reference | Matches open file style | Indexes full project |
| Best for | Complex multi-file test suites | Inline test completion | Iterative test development |
| Cost | Usage-based (API tokens) | $10-19/month | $20/month |
| Learning curve | Medium (CLI + prompting) | Low (autocomplete) | Low-Medium (IDE integration) |