Google’s shutdown deadline for deep-research-pro-preview-12-2025 is October 23; replacements are deep-research-preview-04-2026 and deep-research-max-preview-04-2026.

Google’s October 8 notice specifies the October 23 Deep Research agent shutdown and exact replacement agent identifiers; older Flash notices appear above it.

Published 23 Oct 2026 · 10:38 UTC

Google Gemini API release notes ↗ · Source dated 8 Oct 2026

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