Gemini Deep Research agent does not have a researched profile yet. Everything here comes from its recorded changes and public listings, each linked to its source.
The deep-research-pro-preview-12-2025 agent is deprecated and will be shut down on October 23, 2026. Google recommends deep-research-preview-04-2026 or deep-research-max-preview-04-2026.
Action needed:
Change the agent parameter to deep-research-preview-04-2026 or deep-research-max-preview-04-2026.
Google released deep-research-preview-04-2026 (built for speed and streaming) and deep-research-max-preview-04-2026 (maximum comprehensiveness), adding collaborative planning, visualization, MCP server integration and File Search.
