Google deprecates gemini-omni-flash-preview ahead of September 30 shutdown

What changed

On August 27, 2026, Google released gemini-omni-1.1-flash as the generally available Gemini Omni Flash model and stated that the existing gemini-omni-flash-preview endpoint will be deprecated on September 30, 2026.

Google’s deprecations table lists gemini-omni-flash-preview with shutdown date September 30, 2026 and recommended replacement gemini-omni-1.1-flash.

The GA release notes describe additional Omni capabilities (video extension, first+last-frame interpolation, and resolution controls). Treat those as GA feature notes—not as required migration steps for every preview caller—unless your integration uses them.

Who is affected

Applications still calling the gemini-omni-flash-preview model/endpoint for conversational video generation or editing via the Gemini API.

What you need to do

Required before September 30, 2026 if you still use the preview endpoint:

1. Update model IDs from gemini-omni-flash-preview to gemini-omni-1.1-flash.
2. Retest video generation/editing flows against the GA endpoint and any request/response differences you observe.
3. Review Google’s Omni guide / model card for GA parameters you now rely on (for example resolution controls).

Migration effort

Unknown. Google’s deprecations table confirms shutdown of gemini-omni-flash-preview and replacement gemini-omni-1.1-flash. Preview → GA alone does not establish how much request/schema or client work is required. Treat complexity as integration-specific until you compare your calls against the GA model docs.

Cost impact

Unknown. Google’s changelog/deprecations entry does not quantify price differences between preview and GA Omni Flash for equivalent workloads. Compare current Gemini API pricing for the models you move between.