The Gemini API now lists id antigravity-preview-09-2026. It is not a new Pro/Flash model but the Antigravity managed-agent endpoint: Linux sandbox with code execution, files, and browser, defaulting to Gemini 3.8 Flash. Google-affiliated Philipp Schmid confirmed it is the Gemini API agent harness, with more details expected later this week.

Key Takeaways

  • API id antigravity-preview-09-2026 is the Antigravity managed-agent endpoint, not a new Pro/Flash model.
  • Endpoint offers Linux sandbox, code execution, files, and browser; default model is Gemini 3.8 Flash.
  • Google confirmed it as the Gemini API agent harness, with more details later this week.
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