Gemini 3.7 Flash deprecation
By Steven Van ·
Requests now route to Gemini 3.8 Flash automatically, while an older Deep Research agent will shut down on October 23, 2026.
API requests to the deprecated gemini-3.7-flash model in Google Gemini are now automatically routed to gemini-3.8-flash. The announcement also covers migration from Gemini 3.5 Flash and an older Deep Research agent.
Flash model migration
Developers using gemini-3.7-flash should update their model string to gemini-3.8-flash and review the Gemini 3.8 Flash guide.
Gemini 3.5 Flash is also deprecated, with requests to gemini-3.5-flash automatically routed to gemini-3.6-flash. Developers should change that model string to gemini-3.6-flash or gemini-3.8-flash and review the Gemini 3.6 Flash guide.
Deep Research agent shutdown
The deep-research-pro-preview-12-2025 agent is deprecated and will shut down on October 23, 2026. Developers must update the agent parameter in their interactions.create requests to one of two newer versions:
- deep-research-preview-04-2026, designed for speed and efficiency and suited to streaming responses back to a client UI.
- deep-research-max-preview-04-2026, designed for maximum comprehensiveness in automated context gathering and synthesis.
