GitHub Copilot
The tool that put AI in every IDE — inline completions, chat and agents woven directly into the GitHub workflow.
What it is, and why we use it.
GitHub Copilot was the first mainstream AI coding assistant and remains the most widely deployed: inline completions as you type, chat in the editor, and agent modes that take on issues and pull requests. Because it lives inside GitHub, it meets developers exactly where their code, reviews and CI already are — and it can route between frontier models under the hood, including Claude and GPT.
Copilot is part of how we work, not just what we ship: it's the ambient layer (completions, quick chat) while repo-scale agent work runs through Claude Code. Two tools, one rule — every suggestion is reviewed by the engineer who owns the code. The productivity gain is real; the accountability never moves.
GitHub Copilot vs Claude Code vs Codex.
The three coding-AI workflows we see most — ambient autocomplete, repo-scale agents, and cloud task runners.
| Dimension | GitHub Copilot | Claude Code | Codex |
|---|---|---|---|
| Made by | GitHub / Microsoft | Anthropic | OpenAI |
| Form factor | In-IDE completions, chat + agents | Terminal agent working across a repo | Cloud agents + IDE integration |
| Strongest at | Ambient speed — always on as you type | Long multi-file tasks done autonomously | Parallel delegated tasks in the cloud |
| GitHub integration | Native — issues, PRs, reviews | Via git + CI like any engineer | PR-based workflow |
| Model choice | Multi-model — pick per task | Claude models | GPT / Codex models |
Copilot wins when
- You want zero-friction AI inside the IDE all day
- The team already lives in GitHub PRs and issues
- Per-seat simplicity beats per-token accounting
Claude Code wins when
- The task spans dozens of files and needs a plan
- Refactors, test suites and migrations run end-to-end
- You want an agent that verifies its own work
Codex wins when
- You want to fan out many tasks to cloud agents
- Async delegation suits the team's rhythm
- You're standardised on the OpenAI stack
Copilot is the ambient layer of modern engineering — and the clearest proof of our thesis: it made good developers faster, not optional. Teams that skip these tools aren't being cautious; they're falling behind.
Thinking about GitHub Copilot?
Tell us what you're building — we'll tell you honestly whether GitHub Copilot is the right tool for it.