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Gemini 3.7 Flash deprecation: gemini-3.7-flash is deprecated and has been replaced by gemini-3.8-flash. It…

AI summary

Written by AI from the official notes. Check them for exact details.

Gemini 3.7 and 3.5 Flash models are deprecated, replaced by 3.8 and 3.6 respectively. A Deep Research agent is also deprecated.

  • Gemini 3.7 Flash replaced by gemini-3.8-flash, no longer selectable.
  • Gemini 3.5 Flash replaced by gemini-3.6-flash, no longer selectable.
  • Deep Research agent deep-research-pro-preview-12-2025 will shut down on October 23, 2026.
  • Migrate to newer Deep Research agents for improved performance.

Why it matters: Users of deprecated models and agents should update their requests to ensure continued functionality.

Official notes on ai.google.dev

Full release notes4 changes

  • Gemini 3.7 Flash deprecation: gemini-3.7-flash is deprecated and has been replaced by gemini-3.8-flash. It is no longer available to select in Google AI Studio, and API requests to gemini-3.7-flash are automatically routed to gemini-3.8-flash. Update your model string to gemini-3.8-flash and review the Gemini 3.8 Flash guide.
  • Gemini 3.5 Flash deprecation: gemini-3.5-flash is deprecated and has been replaced by gemini-3.6-flash. It is no longer available to select in Google AI Studio, and API requests to gemini-3.5-flash are automatically routed to gemini-3.6-flash. Update your model string to gemini-3.6-flash (or gemini-3.8-flash) and review the Gemini 3.6 Flash guide.
  • Deep Research Agent deep-research-pro-preview-12-2025 deprecation: The deep-research-pro-preview-12-2025 agent is deprecated and will be shut down on October 23, 2026. Migrate your requests to one of the newer Deep Research agent versions: deep-research-preview-04-2026: Designed for speed and efficiency, ideal to be streamed back to a client UI.
  • deep-research-max-preview-04-2026: Maximum comprehensiveness for automated context gathering and synthesis.

To migrate, update the agent parameter in your interactions.create requests from deep-research-pro-preview-12-2025 to deep-research-preview-04-2026 (or deep-research-max-preview-04-2026).