GitHub Copilot

Copilot is still the default choice for most teams because of its GitHub integration, not because it's the best model. The 2025 upgrade to GPT-4o-based completions improved suggestion accuracy by ~22% on standard HumanEval benchmarks, and the new Copilot Workspace feature (which plans multi-file changes before executing them) closed the gap with Cursor significantly. Where Copilot wins: deep integration with GitHub PR reviews, where inline suggestions during code review is genuinely unmatched. Enterprise pricing at $19/user/month includes IP indemnification that many legal teams require. The caveat: Copilot Chat's context window of ~8k tokens means it loses track of large files quickly. For teams heavily embedded in the GitHub ecosystem, it remains the pragmatic #2.