Time to Bail · Boarding pass
Act. You can stay.
This agent shuts down October 23, 2026. Move to deep-research-preview-04-2026 first.[1]
Act means: change a setting or plan before the date. You can stay.
Gemini API: old Deep Research agent shuts down October 23, 2026
Google shuts down an old Deep Research agent in the Gemini API on October 23, 2026. Two newer agents take its place.
One email with the first steps. Nothing else.
Or add the date to your calendar: Apple or Outlook (.ics) · Google Calendar
Tick steps as you go. Your progress stays in this browser.
Search your code for deep-research-pro-preview-12-2025.
Do it in interactions.create. Pick deep-research-preview-04-2026 for speed. Pick the max one for depth.
Check the report and the cost before October 23.
One email with the first steps. Nothing else.
Or add the date to your calendar: Apple or Outlook (.ics) · Google Calendar
| Shutdown date | October 23, 2026[1] |
|---|---|
| Agent that shuts down | deep-research-pro-preview-12-2025[1] |
| Replacement for speed | deep-research-preview-04-2026, built to stream back to a client UI[1] |
| Replacement for depth | deep-research-max-preview-04-2026, for the most complete research[1] |
| Newer agents | Two: deep-research-preview-04-2026 and deep-research-max-preview-04-2026[1] |
| What to change | The agent parameter in your interactions.create requests[1] |
| Announced | October 8, 2026[1] |
| After shutdown | The agent is turned off and its endpoint is no longer available[2] |
| Apps that call this agent | Stop working on October 23, 2026[1] |
Requests that name deep-research-pro-preview-12-2025 stop working. Google says a shut-down agent is turned off.
interactions.create, set agent to deep-research-preview-04-2026 or deep-research-max-preview-04-2026.Source: [1] Gemini API release notes (Google) · [2] Gemini API deprecations (Google)
Check it yourself. Every fact above links here.
Time to bail on Gemini API: deep-research-pro-preview-12-2025 agent? Act. You can stay. This agent shuts down October 23, 2026. Move to deep-research-preview-04-2026 first.
On our scale this is Act: change a setting or plan before the date. You can stay.
Google shuts down an old Deep Research agent in the Gemini API on October 23, 2026. Two newer agents take its place.
Here are the facts we checked:
You can stay on Gemini Developer API. You have to change a setting or plan before the date.
Leaving is a choice here, not a must.
Google is the main source for this page. Gemini Developer API has not said more than what is listed here. If a fact is not on this page, we do not know it yet.
Apps that call this agent: Stop working on October 23, 2026.
The date to remember is October 23, 2026. Make the change before then.
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People on Gemini API: deep-research-pro-preview-12-2025 agent can stay if they make the change. Some would rather leave. Get the playbook for this change, and list your product here.
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