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Models / Google

Gemini 3.1 Flash Image Preview

Retired

Preview endpoint for Nano Banana 2, superseded by the stable gemini-3.1-flash-image. Google no longer prices it on the pricing page, so token prices are null rather than carried forward. CONFIRMED RETIRED 2026-10-07 on the grey row: the deprecations-table row for gemini-3.1-flash-image-preview now carries class="row-gray" (the page's legend: "Already-shutdown models are indicated with gray backgrounds"), read by check-lifecycle-drift.mjs. Until 2026-10-06 the row was held at deprecated, because its published shutdown date of June 25, 2026 had passed without the grey marker. The same read re-points its recommended replacement from gemini-3.1-flash-image to gemini-nano-banana-2.1. Google publishes shutdown dates as "the earliest possible dates on which a model might be retired"; already-shut-down models are marked with a grey row on the deprecations page.

Gemini 3.1 Flash Image Preview by Google is tracked live in our LLM catalog. It has been retired (shut down 25 Jun 2026); the recommended migration is Gemini Nano Banana 2.1.

Last verified: 24 Oct 2026 · sourced from official provider documentation

Retired on 25 Jun 2026

Lifecycle warning

This model has been retired. Recommended migration: Gemini Nano Banana 2.1.

Read the Gemini 3.1 Flash Image Preview migration guide → replacement & cheapest alternatives

Provider
Google
Status
Retired
Input price
—
Output price
—
Cached input
—
Blended price
—
Context window
—
Max output
—
Modality
text, image, image-out
Open weights
No — API only
Knowledge cutoff
—
Released
26 Feb 2026
API string
gemini-3.1-flash-image-preview

Source: Google official documentation ↗

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FAQ

Gemini 3.1 Flash Image Preview — questions & answers

Is Gemini 3.1 Flash Image Preview still available?

Gemini 3.1 Flash Image Preview has been retired and is no longer available. Its scheduled shutdown date is 25 Jun 2026. The recommended migration is Gemini Nano Banana 2.1.

Does Gemini 3.1 Flash Image Preview support image or vision input?

Yes — Gemini 3.1 Flash Image Preview accepts image input. Listed modalities: text, image, image-out.

Can I self-host Gemini 3.1 Flash Image Preview?

No — Gemini 3.1 Flash Image Preview is proprietary. Its weights are not publicly released, so it is available only through Google's API (or hosted partners), not for self-hosting.

What is the API model string for Gemini 3.1 Flash Image Preview?

The API model identifier for Gemini 3.1 Flash Image Preview is "gemini-3.1-flash-image-preview" when calling Google's API.