Google Antigravity vs JetBrains AI Assistant / Junie: Side-by-Side Comparison 2026

Google Antigravity is an AI IDE from Google — ai-native cloud ide. JetBrains AI Assistant / Junie is an editor extension from JetBrains — native ai assistant for jetbrains ides.

Google Antigravity

Google's AI-native IDE built on a heavily modified fork of VS Code with Gemini built in. Free during preview with rate limits.

✓ Code completions
✓ AI chat
✓ Agentic mode
✓ Multi-file editing
✓ Terminal commands

Free / $19.99/mo · 3 plans

JetBrains AI Assistant / Junie

JetBrains AI Assistant / Junie — AI Code Assistant from JetBrains. IDE-Integrated AI.

✓ Code completions
✓ AI chat
✓ Junie (autonomous agent)
✓ Multi-file editing
✓ Terminal commands

Free / $10/mo · 3 plans

Feature	Google Antigravity	JetBrains AI Assistant / Junie
Category	AI IDE	Extension
Starting Price	Free	Free
Model Family	Gemini	Multi-model
Open Source	No	No

Key Differences

Category: Google Antigravity is an AI IDE; JetBrains AI Assistant / Junie is an editor extension.
Starting price: Google Antigravity starts at $19.99/mo; JetBrains AI Assistant / Junie starts at $10/mo.
Model family: Google Antigravity uses Gemini; JetBrains AI Assistant / Junie uses Multi-model.
Bring your own key: JetBrains AI Assistant / Junie supports BYOK; Google Antigravity does not.
Platforms: Google Antigravity runs on ChromeOS, Linux, Windows, macOS; JetBrains AI Assistant / Junie runs on Linux, Windows, macOS.
Provider: Google Antigravity is built by Google; JetBrains AI Assistant / Junie is built by JetBrains.

Which Should You Choose?

Choose Google Antigravity if you want an AI-native IDE for professional development. Choose JetBrains AI Assistant / Junie if you want native AI assistance with multi-model choice and agentic capabilities. Read our full reviews to see which fits your workflow.