# Google DeepMind — Deep Research Agent deep-research-pro-preview-12-2025 deprecation

- Company: Google DeepMind (deepmind.google)
- Announced: 2026-10-08
- Category: deprecation
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://ai.google.dev/gemini-api/docs/changelog#10-08-2026
- Record: https://forck.live/items/23996-deep-research-agent-deep-research-pro-preview-12-2025-deprecation
- Subject: Gemini API
- Models affected: deep-research-pro-preview-12-2025, deep-research-preview-04-2026, deep-research-max-preview-04-2026

Google DeepMind is deprecating the deep-research-pro-preview-12-2025 agent, which will stop working on October 23, 2026. The company recommends migrating to deep-research-preview-04-2026 for speed and efficiency, or to deep-research-max-preview-04-2026 for maximum comprehensiveness. To migrate, developers must update the agent parameter in their interactions.create requests from the deprecated version to one of the two newer agents.

## Evidence

Verbatim from https://ai.google.dev/gemini-api/docs/changelog#10-08-2026:

> The deep-research-pro-preview-12-2025 agent is deprecated and will be shut down on October 23, 2026.

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