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GoogleDeprecation

gemini-3-pro-preview

Deprecation, announced 9 March 2026. Plan a migration: Replace any gemini-3-pro-preview pin with a current Gemini 3 id and rerun the affected suites, since the preview id no longer serves.

What Google says changed

Google shut down Gemini 3 Pro Preview.

Google: Gemini API changelog

announced 2026-03-09 . verified 2026-09-22

This section restates the provider. It adds no judgement the provider did not make, and it contains no measurement of ours.

Entry

Provider
Google
Models
gemini-3-pro-preview
Change type
Deprecation
Announced
2026-03-09
Verified
2026-09-22

What this kind of change typically touches

  • RAG

    A retrieval feature pinned to a preview id can lose that id on short notice. Google says Gemini preview models may be used in production but will be deprecated with at least 2 weeks' notice.

    Google

  • Classification

    A classifier that runs unattended is the last place a shutdown gets noticed. Google's documentation says most production apps should use a specific stable model, and hedges that stable models usually do not change.

    Google

What to do this week

Plan a migration

Replace any gemini-3-pro-preview pin with a current Gemini 3 id and rerun the affected suites, since the preview id no longer serves.

If you are on a plan

A tracked provider update triggers a rerun of your suite within 2 business days of the announcement, and you get a written verdict. That is one of the six guarantees on every plan.

See plansRead EV-RERUN

Other Google changes

GoogleDeprecation

gemini-2.5-pro, gemini-2.5-flash

Google limited access to Gemini 2.5 models to projects that are actively using them. The entry points developers to Gemini 3.5 Flash-Lite or Gemini 3.8 Flash instead.

Plan a migrationCheck whether any project still calls a Gemini 2.5 model id, and open a migration ticket for the ones that do before new projects lose access.

Source: Google, Gemini API changelog . verified 2026-09-22

GoogleNew version

gemini-3.8-flash

Google released gemini-3.8-flash as generally available. The entry states it brings improvements for long horizon software engineering.

Rerun the suiteQueue gemini-3.8-flash into the next comparison run against the Flash model you use now, and record the result before moving traffic.

Source: Google, Gemini API changelog . verified 2026-09-22

GoogleNew version

gemini-3.7-flash

Google released gemini-3.7-flash. The entry states it brings substantial improvements across software engineering.

Rerun the suiteAdd gemini-3.7-flash to the comparison run you already schedule for Flash tier models, and note where its answers differ from the version you pin.

Source: Google, Gemini API changelog . verified 2026-09-22

Questions

How do I know this is accurate?
The entry links to Google's own page, and the date we read it is on this page. If the provider's page and this page disagree, the provider's page is right and we want to hear about it.
Does this mean my feature broke?
No. It means a thing your feature depends on changed. Whether anything about your output changed is a question only a rerun against your own dataset can answer, and that is what the recommended action is for.
Why is there no score or benchmark here?
Because we publish none. This site restates provider announcements and cites published practitioner guides. Any measurement we make belongs to the customer whose dataset produced it.

Sources

Change-log entries restate provider announcements with sources and dates. Impact notes cite public practitioner reports. The site publishes no measurements of its own on any model.

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