deep-research-pro-preview-12-2025

deep-research-pro-preview-12-2025 (Gemini API) was shut down on Oct 23, 2026; calls to it fail. Gemini API recommends deep-research-preview-04-2026 instead.

Provider

Gemini API

Shutdown

Oct 23, 2026 (already shut down)

Announced

—

Replace with

deep-research-preview-04-2026

Also written as

models/deep-research-pro-preview-12-2025

Source: https://ai.google.dev/gemini-api/docs/deprecations · report a wrong date