Eclipse Theia IDE is free, with no paid plan attached. Google Antigravity is freemium — a usable free tier with paid plans above it. Both are listed under AI IDEs & Editors, so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.
Eclipse Theia IDE is free, with no paid plan attached and is listed for open-source, vendor-neutral IDE with AI agents built on Theia AI. Google Antigravity is freemium — a usable free tier with paid plans above it and is listed for google's agent-first IDE. Both sit in AI IDEs & Editors.
Eclipse Theia IDE is the cheaper starting point: it is free, with no paid plan attached, while Google Antigravity is freemium — a usable free tier with paid plans above it. Pricing tiers here come from the catalog, not from a promotional page.
Choose Eclipse Theia IDE if you need open-source, vendor-neutral IDE with AI agents built on Theia AI; choose Google Antigravity if you need google's agent-first IDE. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.
| Eclipse Theia IDE | Google Antigravity | |
|---|---|---|
| Pricing tier | Free | Free tier + paid plans |
| Free to start | Yes | Yes |
| Category | Code & Development | Code & Development |
| Type | AI IDEs & Editors | AI IDEs & Editors |
| Listed capabilities |
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| Tags | theia ide, eclipse theia ai, open source vs code alternative, ai native ide open source, bring your own api key ide | ide, google, antigravity, agent, gemini, free |
| Website | theia-ide.org | antigravity.google |
| Full page | Eclipse Theia IDE details → | Google Antigravity details → |
| Alternatives | Eclipse Theia IDE alternatives → | Google Antigravity alternatives → |