October 8, 2026 · Google Gemini APIDeprecation

Gemini 3.7 Flash, 3.5 Flash and deep-research-pro-preview-12-2025 deprecated

Gemini 3.7 Flash deprecation : gemini-3.7-flash is deprecated and has been replaced by gemini-3.8-flash.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Gemini 3.5 Flash deprecation : gemini-3.5-flash is deprecated and has been replaced by gemini-3.6-flash.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).