The official replacement is lyria-3.5. lyria-3-pro-preview does not have a published shutdown date per Google Gemini API's deprecation page (checked 2026-10-17). Price, context window, and max output were left blank because the official pages we checked did not publish them.
lyria-3-pro-preview model page · Google Gemini API
A migration diff is not published because the official page did not name a replacement model id.
The official replacement is lyria-3.5. lyria-3-pro-preview does not have a published shutdown date per Google Gemini API's deprecation page (checked 2026-10-17). Price, context window, and max output were left blank because the official pages we checked did not publish them.
Price comparison is not published yet.
Context window sizes are not both published on the official pages we checked.