Google Antigravity is an agent-first IDE from Google DeepMind. It provides synchronized agentic control across your editor, terminal, and browser.
| Official Antigravity | Open-Antigravity (community) |
|---|
| Custom API endpoints | Not supported | Supported |
| Custom models | Gemini 3 Pro, Claude Sonnet 4.5, GPT-OSS only | Any OpenAI-compatible model |
| Use with Kyma | Not possible | Works out of the box |
| Download | antigravity.google | GitHub |
The official Google Antigravity does not support custom API endpoints or API keys. To use Kyma’s open source models with an Antigravity-like experience, use the community open-antigravity fork.
Setup with Open-Antigravity
Clone the repo
git clone https://github.com/ishandutta2007/open-antigravity.git
cd open-antigravity
Configure Kyma API
Create a .env file with your Kyma credentials:PRIMARY_PROVIDER=openai
OPENAI_API_KEY=kyma-your-api-key
OPENAI_BASE_URL=https://kymaapi.com/v1
Start coding
Open the IDE and start using AI agents powered by Kyma’s open source models.
Recommended models
| Model | Alias | Best For |
|---|
qwen-3.6-plus | best | Highest quality overall |
kimi-k2.5 | code | Best tool calling, agentic workflows |
deepseek-v3 | — | Near-frontier reasoning |
gemini-2.5-flash | long-context | 1M context for large codebases |
Use model aliases like best or code — they auto-update when better models become available. curl "https://kymaapi.com/v1/models/recommend?agent=cursor"
Why use Kyma with Antigravity?
- 19 open source models — access models from Meta, Google, Alibaba, DeepSeek, and more through a single endpoint
- 4-layer fallback — if one provider is down, your request automatically routes to another
- Prompt caching — up to 90% cost savings on repeated system prompts
- Free to start — $0.50 signup credits, no credit card required
Prompt Caching
Prompt caching is automatic. Your system prompt and tool definitions are cached for 5 minutes, reducing costs by up to 90% on subsequent requests. No code changes needed. See Prompt Caching for details. 
