GitHub Copilot X is best understood as a historical launch brand, not a current product tier. GitHub used the name to describe a broader AI developer experience around chat, pull requests, docs, and command-line help, but the market-facing product is now simply GitHub Copilot.
The current GitHub Copilot surface is maintained on GitHub’s official feature and plans pages, with Free, Pro, Business, and Enterprise positioning instead of a separate Copilot X SKU. That makes the old Copilot X page useful for understanding the roadmap transition, but not for evaluating a product a buyer can purchase under that name.
If you are choosing a modern coding assistant, compare the current GitHub Copilot product against tools such as Cursor, Claude Code, Codex, Devin, and Cline. Treat Copilot X as legacy terminology for features that were either absorbed into Copilot or retired during GitHub’s post-2023 AI tooling rollout.