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

Google Antigravity vs OpenCode comparison for 2026. Features, pricing, AI capabilities, and editor support analyzed side by side to help you choose the right coding tool for your workflow.

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 · 3 plans

OpenCode

Open-source terminal AI coding agent from SST. Free with BYOK, or use Go ($10/mo for curated open-source models), Zen (pay-per-token), or Black (flat-rate subscription at $20/$100/$200/mo, currently paused) for managed model access.

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

Free / $10/mo · 4 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 May 4, 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 free / BYOK; OpenCode starts at $10/mo.
  • 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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