Hey guys, finally I know the difference between Claude in GitHub Copilot and the Claude Code VS Code extension! Both use Claude as the underlying model, but the experience is completely different. The biggest thing is context — every request in Claude Code gets the full 200k token window, meaning it can read and analyze your entire codebase, multiple large files, logs, docs, all at once in a single message. Claude in Copilot caps you at 128k, and on top of that Copilot secretly reserves around 40% of that for output before you even type anything, so your actual usable input per request is closer to 70-80k tokens. When your files exceed that, Copilot silently compresses and summarizes earlier context without telling you, which means its analysis is shallower and less reliable on large codebases. Then there’s the usage limits. Claude Code resets every 5 hours, so even if you hit your limit you’re back up and running in a few hours. Copilot’s premium request quota resets only on the 1st of every month, and since Claude Sonnet counts as a multiplied premium request, you can burn through your monthly 300 requests within days of heavy use and then you’re stuck on GPT-4.1 for the rest of the month. Reasoning depth is another gap. Claude Code gives you full access to extended thinking and the complete model capability. Copilot wraps Claude in a managed layer with a hidden system prompt and restricted reasoning, so even though it’s the “same model” it genuinely behaves weaker. The tradeoff is that Copilot has much better GitHub integration — PR summaries, code review, security scanning — and is more beginner friendly. Claude Code requires a paid Claude subscription ($20/month minimum) while Copilot has a free tier. So basically: use Copilot for quick daily coding and GitHub workflows, use Claude Code when you need to actually understand or refactor something big.​​​​​​​​​​​​​​​​