Silent model
Gemini 3 Pro Preview was shut down on the Gemini API March 9, 2026; the gemini-3-pro-preview id now points to gemini-3.1-pro-preview.
What changes
Google announced on February 26, 2026 that gemini-3-pro-preview would shut down March 9, 2026. The changelog for that date says the model was shut down and the id now points to gemini-3.1-pro-preview, which is also the listed replacement.
Silent: No error. Behavior, results, or cost change quietly.
What to do
Requests to gemini-3-pro-preview are now served by gemini-3.1-pro-preview. Pin gemini-3.1-pro-preview explicitly and re-run your evals, since results may differ from what you validated.
Strings to search for
gemini-3-pro-preview