GitHub Copilot vs Google Antigravity

Option A

GitHub Copilot

Inline completion and chat inside the editor and GitHub you already have — the path of least procurement resistance.

Best for

• Teams already on GitHub
• Inline autocomplete first
• Enterprise seats that must stay in the GitHub envelope

Strengths

• No editor migration
• Procurement path is clear

Trade-offs

• Less agent-native than Cursor
• Easy to under-measure

Verdict

Copilot is the default completer for GitHub shops. Cursor and Windsurf are the agent IDEs. Claude Code and Aider are terminal agents. Codeium is the budget plugin. Keep Copilot if the company will only buy this seat. Trial Cursor on one ticket before you standardize the other way. Confirm exclusion paths for secrets. Measure suggestion quality on your languages, not on Python demos. Keep Copilot if GitHub already won. Trial Cursor on one ticket before you switch the company. Measure your languages. Confirm which models the enterprise plan actually routes.

Option B

Google Antigravity

Google’s desktop command center for local coding agents that plan, run, and check whole tasks.

Best for

• Developers who think in tasks and parallel workers
• Desks already on Gemini / Google AI
• People willing to leave pure inline autocomplete

Strengths

• Actually about fleets of agents, not a nicer complete-tag
• Fits Google-model shops without a third-party harness

Trade-offs

• Younger editor muscle memory than Cursor
• Weak story if you are all-in on another model vendor

Verdict

Shortlist Antigravity when the bottleneck is “I need several agents to plan and check a change,” not “I need the next twelve tokens in this function.” Cursor is still the faster everyday editor. Claude Code is still the cleaner terminal-native loop. Copilot is still the path of least resistance inside GitHub Enterprise. The product earns a slot if you want Google’s agent runtime on the metal you already own, and you are willing to operate a command center beside your editor. Confirm current Gemini entitlements and what “local” means for your repo policy before you roll it past a personal install. Do not migrate a whole team off Cursor on the strength of a launch blog post.