* **Gemini Embedding 2 Preview deprecation**:
[`gemini-embedding-2-preview`](/docs/models/gemini-embedding-2-preview) is
[deprecated](/docs/deprecations#embedding-deprecated-models). Effective
November 6, 2026, API requests to `gemini-embedding-2-preview` route to
[`gemini-embedding-2`](/docs/models/gemini-embedding-2) at
[Gemini Embedding 2 rates](/docs/pricing#gemini-embedding-2). Update your
model string to `gemini-embedding-2`. `gemini-embedding-2` uses the same API
schema, pricing, and embedding space, so no other code changes or vector
re-indexing are needed.