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Model provider · Gemini API · Vertex AI

Google model and API lifecycle

Tracks official Gemini API deprecations and release notes plus Vertex AI generative-model lifecycle notices.

4Verified changes
1Upcoming cutoffs
7Affected identifiers
4Official sources

Action required

Upcoming Google deadlines

Complete and regression-test each migration before the provider's announced cutoff.

76 days left

Vertex AI Extensions: api sunset on November 26, 2026

The official source lists Agent Platform as a replacement identifier. Test the migration against current provider documentation before production.

Google · Vertex AI

Verified September 11, 2026

Published Google lifecycle changes

Exact symptoms and migration actions, linked to the official platform documentation used for verification.

GoogleGemini APIcritical

Gemini embedding-2-preview shuts down on August 10, 2026

Google is shutting down the preview embedding model and lists gemini-embedding-2 as the replacement.

model shutdownChange the model ID to gemini-embedding-2 and validate vector dimensions, storage, and retrieval quality in a staging index before cutover.
GoogleGemini APIcritical

Imagen 4 API models shut down on August 17, 2026

Google is shutting down all three Imagen 4 production model IDs and recommends gemini-3.1-flash-image.

model shutdownMove to gemini-3.1-flash-image and test request shape, output handling, latency, image quality, and safety behavior before the deadline.
GoogleGemini APIhigh

Gemini deprecates temperature, top_p, and top_k

Gemini 3.6 Flash and 3.5 Flash-Lite ignore the sampling parameters; Google says future model generations will return HTTP 400 when they are supplied.

parameter deprecationStrip temperature, top_p, and top_k from Gemini requests and encode response constraints in a clear system instruction.
GoogleVertex AIhigh

Vertex AI Extensions: api sunset on November 26, 2026

Google documents a api sunset affecting Vertex AI Extensions on November 26, 2026. The source lists Agent Platform as a replacement identifier.

api sunsetSearch repositories and deployment configuration for Vertex AI Extensions. The official source lists Agent Platform as a replacement identifier. Test the migration against current provider documentation before production.

Official Google source coverage

Change Radar monitors 4 first-party Google documentation pages using a dedicated lifecycle ledger. These are the source pages used to qualify lifecycle records for publication.