About Antigravity Add Model
Antigravity Custom Model Enabler is an open-source patch that lets the Antigravity desktop agent and IDE use your own model providers.
Add external API providers and local models alongside Antigravity's built-in models. Configure them in Settings, switch models from the chat picker, and optionally route requests through a gateway with history, fallback providers, and a browser dashboard.
New here? Start with the quickstart.
Who maintains this project?
The project is maintained by vahapogut on GitHub, with community contributions from issue reports to tested fixes. The site you're reading promotes the project as a community effort.
Source: GitHub repo
Verification
Runtime-verified in the open
The latest desktop runtime check, with its receipts.
Community
Shipped from a single report
Workers AI support was added after a single user report. The maintainer implemented the fix within hours. See the proposal.
History
Three milestones from the changelog
Real entries from the repo's CHANGELOG, linked at the source.
Initial release: multi-provider proxy, API key encryption, streaming, tool calls, custom UI.
Critical fix: the Antigravity v2.0.6 update hardcoded the model-list endpoint and bypassed the local proxy, so custom models disappeared from the chat dropdown. The Language Server binary is now patched at build time.
Full TypeScript migration — all 23 source files — plus OpenRouter support: 300+ models through one unified API.
The fine print
Trademark and license
The legal posture, in plain words.
Trademark
Antigravity Add Model is an independent, community-maintained project. It is not affiliated with, or endorsed by, Google. Antigravity is a trademark of Google LLC. The Antigravity logo used by the project is credited toGoogle's press assets.
License
Apache-2.0. Adapted gateway components retain their MIT license and upstream attribution.
Star it. Fork it. Add your model.
Free, open source, Apache-2.0. Issues and pull requests welcome.