gemini-3.1-flash-lite has a stated shutdown window

What changed

Impact summary

Google's deprecation table lists Earliest: May 7, 2027 for gemini-3.1-flash-lite and recommends gemini-3.5-flash-lite.

Beforegemini-3.1-flash-lite

After / replacementgemini-3.5-flash-lite

Affected models and systems

gemini-3.1-flash-lite

Migration action

Recommended next step: Benchmark gemini-3.5-flash-lite, compare cost and output quality, then phase model routing over before the stated shutdown window.

Source and interpretation

API platform & regional scope

Google Gemini API · Direct developer platform; eligibility and regional restrictions are account-specific.

Not Vertex AI.

Bounded manual catalog. Original event checks retained from 2026-09-01; not reverified in this expansion.

Unconfirmed regions are not assumed to be global. Automatic monitoring is OFF. Source checks

Official evidence locators

Existing normalized record: evt_google_gemini_31_flash_lite. Locate listed affected model(s) in the lifecycle/release table; original manual check retained.

Original source date and qualifier retained; exact shutdown time is not inferred.

Affected endpoints: Not separately specified; check model / capability scope

Action / deadline: Review required · Stated deadline

This record is classified as official announcement. The facts above were normalized from the provider's public developer documentation. API Change Watch does not treat an unreviewed page diff as a verified announcement.

Read the official source ↗