Nano Banana 2.1 API: Status, Model ID and Current Pricing

Nano Banana 2.1 appears in Gemini and Flow, but Google has not published a matching public API ID. Here is the confirmed model mapping, current availability and APIMaster pricing.

Nano Banana 2.1Nano Banana APIGemini image APIGemini FlowAI image generationAPIMaster

Published 2026-10-06

Quick Answer

Nano Banana 2.1 is not at the “cannot use” stage, but it is not a confirmed standalone public API ID either. The label has appeared in Gemini and Flow product surfaces, while the underlying configuration has been associated by community reports with IMAGE_GENERATOR_GEMPIX_2P5_FLASH. Google has not published a Gemini API model page that names nano-banana-2.1 as a callable endpoint, so treat the label as a product-facing status clue rather than an API contract.

For a production integration today, use a confirmed model ID and check the route instead of trusting a label. APIMaster’s live catalogue checked on October 6, 2026 had one active route for gemini-2.5-flash-image at from $0.03744 per 1K image, and three active routes for Nano Banana 2 / gemini-3.1-flash-image at from $0.0469 per 1K image. The marketplace card is authoritative because route prices and availability change with supply.

Model ID	Official/reference price	Current APIMaster price	Active routes	Discount	Model card
`gemini-2.5-flash-image`	`$0.039` per 1K image	From `$0.03744` per 1K image	1	Up to ~4% off	View routes
`gemini-3.1-flash-image` — Nano Banana 2	`$0.067` per 1K image	From `$0.0469` per 1K image	3	Up to ~30% off	View routes

These are the lowest active-route observations, not a promise that every route has the same price. The 2.1 label currently has no separate confirmed API row, so this page does not invent an APIMaster price or model ID for it.

Is Nano Banana 2.1 an API model?

Not as a publicly documented Google API model at the time of this check. Google’s published image-generation model documentation uses API IDs such as gemini-3.1-flash-image, gemini-3.1-flash-lite-image, gemini-3-pro-image and gemini-2.5-flash-image. Google’s Gemini API model documentation and image-generation guide are the source of truth for callable IDs.

That does not make the product label meaningless. A web or mobile product can expose a friendly name while routing requests through an internal model configuration. The label can therefore be useful for search and for tracking a rollout, but it is not enough to build an SDK integration. Your application should keep the API model ID configurable and record which route actually answered.

What does the 2.1 label appear to refer to?

The public clues point to a rename or rollout of a Gemini image-generation configuration rather than a clean, separately documented API launch:

Product screenshots show “Nano Banana 2.1” in Gemini web or mobile surfaces.
Community timeline reports connect the label with IMAGE_GENERATOR_GEMPIX_2P5_FLASH, an internal-looking configuration name.
Other reports describe an earlier “Nano Banana 2.5 Flash” label in Flow before the visible name changed.
None of those observations establishes that nano-banana-2.1 is a supported request value for Gemini API or Vertex AI.

The safest interpretation is: 2.1 is a real product-facing label worth tracking, but its public API mapping is still unconfirmed. This page will be updated when Google publishes a matching model ID, pricing page or lifecycle entry.

For the adjacent search term, see Nano Banana 2.5 API status and pricing.

What can you call today?

The confirmed choices are the two image API IDs in the price table above. gemini-2.5-flash-image is still present in APIMaster with one active route, although Google has marked the model deprecated in its platform documentation and lists March 15, 2027 as the Vertex retirement date. That is a lifecycle warning, not a claim that the route stopped working on the date of this check.

For a new integration, Nano Banana 2 / gemini-3.1-flash-image is the more forward-looking choice. It is the model Google documents as Nano Banana 2, has three active APIMaster routes in this check, and supports multiple image-size price tiers. If your application needs the older 2.5 behavior, pin the confirmed ID, monitor the route and keep a migration path ready.

Nano Banana 2.1 vs Nano Banana 2

The names should not be treated as a simple API version comparison. “Nano Banana 2” has a confirmed public mapping to gemini-3.1-flash-image; “Nano Banana 2.1” currently has a product-surface label but no matching public API ID. It is therefore possible to compare the user-facing products, but not to promise that changing an API string from one version to the other will work.

For commercial image generation, compare actual output quality, latency, editing behavior and route price on the model card. APIMaster uses one OpenAI-compatible key for multiple providers and checks channels before listing them, so you can test the live route rather than rely on an unverified alias.

How to call the confirmed image route

Create an APIMaster account, generate a key in the API key console, point your client at https://apimaster.ai/v1, and use the confirmed model ID. For Nano Banana 2, the only model change needed is gemini-3.1-flash-image:

curl "https://apimaster.ai/v1/images/generations" \
  -H "Authorization: Bearer $APIMASTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3.1-flash-image",
    "prompt": "A clean studio product photograph of a yellow ceramic teapot on a blue table.",
    "size": "1:1",
    "resolution": "1K",
    "n": 1
  }'

Use the Nano Banana 2 model card to see the current route list before production traffic. The same key can also cover GPT Image, Claude, GPT, DeepSeek and Qwen text models.

What should developers do with the 2.1 label?

Do not hardcode it as an API ID. Keep the user-facing label separate from the callable model string.
Use a confirmed route today. Start with gemini-3.1-flash-image for a new Nano Banana integration, or gemini-2.5-flash-image when you specifically need the older tier.
Watch the official model list. A Google API model page, pricing entry and lifecycle policy carry more weight than a screenshot or an arena label.
Recheck the marketplace before scaling. The live card determines whether a route is available and what it costs.

FAQ

Is Nano Banana 2.1 released?

The name appears in Gemini and Flow product surfaces, but Google has not published a matching standalone Gemini API model ID in the official documentation checked for this article. It is a product-facing rollout clue, not yet a confirmed API contract.

Can I call `nano-banana-2.1` directly?

Do not assume so. Use a confirmed API ID such as gemini-3.1-flash-image and keep the model name configurable until Google documents nano-banana-2.1 as a supported request value.

Is Nano Banana 2.1 unusable?

No. The label may already be usable inside Google’s first-party products, and the related image-generation capability is available through confirmed API routes. The limitation is that the exact public API mapping is not confirmed.

What is the cheapest current Nano Banana route on APIMaster?

On the October 6, 2026 check, gemini-2.5-flash-image started at $0.03744 per 1K image across one active route. Nano Banana 2 / gemini-3.1-flash-image started at $0.0469 per 1K image across three active routes. See the live model cards because prices can change.

Should a new project use Gemini 2.5 Flash Image?

It can still be called where the route is active, but it is deprecated in Google’s lifecycle documentation. For a new project, prefer the confirmed Nano Banana 2 mapping, gemini-3.1-flash-image, unless you have a tested compatibility reason to stay on 2.5.

Does APIMaster list Nano Banana 2.1 as a separate model?

No separate public APIMaster model ID is claimed here. APIMaster lists the confirmed Google API IDs and shows their live routes; it does not turn an unverified product label into a route.

Sources and verification date

Google Gemini API model documentation — confirmed public model IDs.
Google image-generation guide — API usage and supported image-generation workflow.
Google Gemini API pricing — official image-generation reference pricing.
Google Cloud Gemini 2.5 Flash Image lifecycle page — deprecation and retirement information.
APIMaster live pricing catalogue and marketplace cards, checked October 6, 2026. Route availability and prices can change after publication.

Start with an image API that exists today

Nano Banana 2.1 is worth tracking, but a product label is not a stable API contract. For a working integration today, use Nano Banana 2 / gemini-3.1-flash-image from $0.0469 per 1K image on the checked APIMaster routes. Create an APIMaster account, generate a key in the console, point your client at https://apimaster.ai/v1, and verify the current price on the Nano Banana 2 card before sending production traffic.

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