Breaking model

The preview embedding model gemini-embedding-2-preview was shut down on the Gemini API on August 10, 2026. The replacement is gemini-embedding-2.

Took effect Aug 10, 2026 · Gemini API embedding model gemini-embedding-2-preview (listed as embedding-2-preview)

Reviewed against the vendor source on Sep 24, 2026 (AI-assisted review). Key facts are re-checked against the source daily.

What changes

Google's deprecations page lists embedding-2-preview with a shutdown date of August 10, 2026 and gemini-embedding-2 as the replacement. The March 10, 2026 release notes introduced this model as gemini-embedding-2-preview. The release notes contain no deprecation or shutdown entry for it.

Breaking: Calls fail after this date.

What to do

Switch to gemini-embedding-2. Unless Google documents that the preview and GA embedding spaces match, re-embed your corpus into a new index and store the embedding model id with each vector.

Strings to search for

gemini-embedding-2-previewembedding-2-preview

Source

https://ai.google.dev/gemini-api/docs/deprecations