Google deprecated the Deep Research agent deep-research-pro-preview-12-2025, which will be shut down on October 23, 2026. Developers should migrate their interactions.create requests to deep-research-preview-04-2026 (speed/efficiency) or deep-research-max-preview-04-2026 (maximum comprehensiveness) by updating the agent parameter.
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What to doUpdate the agent parameter in your interactions.create requests to deep-research-preview-04-2026 or deep-research-max-preview-04-2026 before the October 23, 2026 shutdown.
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