Best fit
Fast implementation, context-heavy planning, and cost-sensitive review or analysis tasks.
Route multiple backing models through Antigravity CLI.
Antigravity routes Gemini, Claude, and GPT-OSS backing models through one agent. Model labels choose the backing model while ProPR owns planning, isolated execution, and the GitHub PR loop.
Approved planContext and scope attached
Gemini / Claude / GPT-OSS
Isolated worker
GitHub pull requestCommits, logs, and follow-ups
Your credentials
Task history kept
GitHub merge decision
Agent fit and access
Access
Authenticate Antigravity on the host and reuse that access inside agent containers.
Role in ProPR
Antigravity CLI participates in the same plan, task, PR, follow-up, logging, and recovery model as other agents.
Three vendors through one agent.
All Antigravity models run with a 1M-token context window through the same subscription and credential mount. Use the exact identifiers below in model configuration; managed issue labels provide GitHub routing.
| Model | Model identifiers | Reach for it when |
|---|---|---|
| Gemini 3.7 Flash (High / Medium / Low) | antigravity-gemini-3.7-flash-highantigravity-gemini-3.7-flash-mediumantigravity-gemini-3.7-flash-low | Fast, cost-efficient passes — the tier trades speed against reasoning effort. |
| Gemini 3.1 Pro (Low / High) | antigravity-gemini-3.1-pro-lowantigravity-gemini-3.1-pro-high | Context-heavy planning, analysis, and implementation. |
| Claude Sonnet 4.6 (Thinking) | antigravity-claude-sonnet-4.6-thinking | Careful reasoning without leaving the Antigravity subscription. |
| Claude Opus 4.6 (Thinking) | antigravity-claude-opus-4.6-thinking | The hardest changes routed through the same access. |
| GPT-OSS 120B (Medium) | antigravity-gpt-oss-120b-medium | An open-weight option for standard passes. |
Bring your own Google AI plan — ProPR never marks up tokens.
Antigravity authenticates with your Google account (agy login). Regular use needs a Google AI subscription, with pay-as-you-go credits for extra capacity. You pay Google directly; ProPR adds no markup.
| Plan | Price | Good for |
|---|---|---|
| Google AI Pro | $20 / mo | Entry tier for regular Antigravity use. |
| Google AI Ultra | $100–$200 / mo | 5× to 20× higher Antigravity usage limits. |
| Pay-as-you-go credits | Metered | Top-up credits for Antigravity beyond plan limits. |
Model choice
One Antigravity entry exposes Gemini, Claude, and GPT-OSS backing models — see the table above — usable through managed issue labels, plan settings, and review controls.Phase routing
Use Antigravity CLI for planning, implementation, review, or follow-up changes.Access model
Use the Antigravity credentials configured in your self-hosted environment.Usage tracking
Enable Agent Tank and ProPR shows Antigravity CLI usage around tracked calls.
Setup details live in the docs.
ProPR runs the official Antigravity CLI, and the setup specifics — CLI versions, model aliases, and credentials — are covered in the documentation. Inside ProPR, Antigravity CLI follows the same path as every other agent: planning, isolated implementation, pull request, follow-up, and recovery.