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Vertex AI gemini-3.1-flash-lite

Gemini 3.1 Flash-Lite (Vertex AI) (Vertex AI)

Shutdown scheduled Shutdown

No — Gemini 3.1 Flash-Lite (Vertex AI) is not deprecated as of August 21, 2026. Vertex AI has not deprecated it, but publishes May 7, 2027 (in 238 days) as the earliest date it could be retired.

The current low-cost workhorse on Vertex AI. Google guarantees availability for at least 12 months from release, so the published retirement date is a floor ("May 7, 2027 or later") rather than a commitment — it is active, with no firm shutdown to plan around yet.

The facts

Provider Vertex AI
Model id gemini-3.1-flash-lite
Released May 7, 2026
Deprecated not deprecated
Shutdown (earliest) May 7, 2027 ·

The provider publishes this as the earliest date the model could be retired, not a commitment. It may move later, but not earlier.

Status Shutdown scheduled
Last verified August 21, 2026

Frequently asked questions

When will Vertex AI Gemini 3.1 Flash-Lite (Vertex AI) shut down?
Vertex AI Gemini 3.1 Flash-Lite (Vertex AI) is scheduled to shut down on May 7, 2027, in 238 days. Vertex AI publishes this as the earliest possible retirement date rather than a firm commitment, so it may move later — but not earlier.
Is Vertex AI Gemini 3.1 Flash-Lite (Vertex AI) still available?
Yes. Vertex AI Gemini 3.1 Flash-Lite (Vertex AI) is active and fully supported as of August 21, 2026.

Models that migrate here

Vertex AI names Gemini 3.1 Flash-Lite (Vertex AI) as the replacement for 2 models.

Sources

Found something wrong? The data is one YAML file — edit it on GitHub.

This page, for machines

Drop the badge in a README so it turns red the day this model is retired:

[![gemini-3.1-flash-lite](https://img.shields.io/endpoint?url=https://modeldeprecations.dev/badge/vertex/gemini-3.1-flash-lite.json)](https://modeldeprecations.dev/vertex/gemini-3.1-flash-lite)

Other Vertex AI models

All Vertex AI deprecations →

How to use this site

The full guide, in Markdown. Copy it and hand it to a coding agent verbatim.

# How to use modeldeprecations.dev

[modeldeprecations.dev](https://modeldeprecations.dev) answers one question per model: is it deprecated,
when does it shut down, and what replaces it. Every date on the site is cited to the
provider's own documentation, with the date we last checked it.

Three lifecycle states are used, matching the providers' own vocabulary:

- **active** — still supported, no deprecation announced.
- **deprecated** — the provider has announced it is going away. It still answers requests.
- **retired** — API access is gone. Requests fail.

A model can be active *and* carry a shutdown date: Anthropic publishes a
"not sooner than" date and Google publishes an earliest shutdown date for models
that are current and fully supported. Those are reported as scheduled shutdowns,
not deprecations, because that is what the provider actually committed to.

## Check one model

```bash
curl https://modeldeprecations.dev/api/v1/models/openai/gpt-4-32k.json
```

Or fetch the page as Markdown, which includes the answer, the dates and the sources:

```bash
curl https://modeldeprecations.dev/openai/gpt-4-32k.md
```

## Full catalog

```bash
curl https://modeldeprecations.dev/api/v1/models.json
```

Ids are `provider/model`. Dated snapshots (`gpt-4-32k-0613`) are listed as aliases of
their canonical entry rather than as separate records.

Each entry carries `computed_status`, the lifecycle state recomputed against the build
date — so a model whose shutdown has passed reads `retired` without anyone editing data.

## Badges

A shields.io endpoint per model, for READMEs that should go red when a model dies:

```
https://img.shields.io/endpoint?url=https://modeldeprecations.dev/badge/openai/gpt-4-32k.json
```

## Calendar and changelog

- Subscribe to every shutdown date: https://modeldeprecations.dev/calendar.ics
- Changelog RSS: https://modeldeprecations.dev/changelog.xml

## JSON Schema

```bash
curl https://modeldeprecations.dev/api/v1/schema.json
```

## Contribute

Data lives in YAML under `models/{provider}/{model}.yaml` in the
[GitHub repo](https://github.com/mnfst/modeldeprecations.dev). Every lifecycle date needs a source URL; CI rejects a
date without one. Open a PR.

## For agents

- Machine-readable overview: https://modeldeprecations.dev/llms.txt
- This guide plus every model inline: https://modeldeprecations.dev/llms-full.txt
- Any page also exists as Markdown: append `.md` to a model URL.
- In a browser, this site registers a **WebMCP** tool on `navigator.modelContext`:
  `check_model_deprecation`, `list_shutdowns`, `find_replacement`, and `get_usage_guide`.
- Parameters each model accepts are catalogued on the sibling site, https://modelparams.dev.