Google Antigravity vs OpenCode: Side-by-Side Comparison 2026

Google Antigravity vs OpenCode comparison 2026. Side-by-side features, pricing & capabilities.

Google Antigravity is an AI IDE from Google — ai-native cloud ide. OpenCode is a CLI-based coding agent from SST — open-source terminal ai coding agent.

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

OpenCode

Open-source terminal AI coding agent from SST. Free with BYOK, or use OpenCode Zen (pay-per-token) and Black (flat-rate subscription at $20/$100/$200/mo) for managed model access.

  • ✓ AI chat
  • ✓ Agentic mode
  • ✓ Multi-file editing
  • ✓ Terminal commands
  • ✓ Test generation

Free · 2 plans

Feature Google Antigravity OpenCode
Category AI IDECLI
Starting Price Free Free
Model Family GeminiMulti-model (any)
Documentation ✓ —
Git Integration ✓ —
Open Source NoYes (MIT)

Pricing verified Feb 25, 2026. Google Antigravity pricing | OpenCode pricing

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Key Differences

  • Category: Google Antigravity is an AI IDE; OpenCode is a CLI-based coding agent.
  • Starting price: Google Antigravity starts at $19.99/mo; OpenCode starts at free / BYOK.
  • Model family: Google Antigravity uses Gemini; OpenCode uses Multi-model (any).
  • Open source: Google Antigravity: No. OpenCode: Yes (MIT).
  • Bring your own key: OpenCode supports BYOK; Google Antigravity does not.
  • Platforms: Google Antigravity runs on ChromeOS, Linux, Windows, macOS; OpenCode runs on Linux, Windows, macOS.
  • Provider: Google Antigravity is built by Google; OpenCode is built by SST.

Which Should You Choose?

Choose Google Antigravity if you want an AI-native IDE for professional development. Choose OpenCode if you want open-source terminal-based coding with model flexibility. Read our full reviews to see which fits your workflow.

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