Image model comparison
Nano Banana 2.1 vs Nano Banana 2
Google released Nano Banana 2.1 as a stable Gemini API model on October 6, 2026: an update to Nano Banana 2 with better visual quality, typography and multi-turn consistency, plus video and PDF input. This page sets Google's published figures side by side. Nano Banana 2.1 is not on Imgo yet; the note below reads Imgo's live catalog for Nano Banana 2.
Run this comparison yourself
Same prompt, same aspect ratio — only the model changes. Run it on each one and judge the difference on your own screen.
Test prompt · Aspect ratio 1:1
A chalkboard menu on a café wall, hand-lettered in white chalk. Title: "TODAY". Three lines: "OAT LATTE 4.50", "MATCHA TONIC 5.00", "BANANA BREAD 3.20". A small chalk drawing of a coffee cup in the corner. Warm morning light, photographed straight on.
- Run on Nano Banana 2
Nano Banana 2.1 isn't on Imgo — copy the prompt to test it there.
External reference — not available on ImgoLast checked: 2026-10-08
Nano Banana 2.1 — not yet on Imgo. It is a stable model in Google's Gemini API, but Imgo's image generator does not offer it, and Imgo has no credit price for it.
What Google has published
| Capability | Nano Banana 2.1 | Nano Banana 2 |
|---|---|---|
| Gemini API model id | gemini-nano-banana-2.1 | gemini-3.1-flash-image |
| Status | Stable since October 6, 2026 | Stable; no shutdown date announced |
| Inputs | Text, images, video and PDF | Text and images |
| Output sizes | 1K (default), 2K and 4K | 512 px, 1K, 2K and 4K |
| References | Up to 14 reference images, with consistency for up to 4 characters and fidelity for up to 10 objects | Reference images supported; Imgo's generator shows the live limit |
| Output price (Gemini API, standard) | $0.0336 per 1K image, $0.0504 per 2K, $0.113 per 4K | $0.067 per 1K image, $0.101 per 2K, $0.151 per 4K; $0.045 at 512 px |
| Input price (Gemini API, standard) | $1.50 per million tokens | $0.50 per million tokens |
Google's list prices for direct Gemini API use, read on 2026-10-08; the batch tier costs about half. Imgo does not bill these rates — every run on Imgo quotes its credit price before you submit.
What 2.1 changes
Google describes 2.1 as an update to Nano Banana 2 with better visual quality, prompt adherence, typography and character consistency across turns of a conversational edit. It adds video and PDF input, search grounding with Google Web and Image Search, adjustable thinking levels, and fewer tiling artifacts in very wide or tall formats such as 1:4, 4:1, 1:8 and 8:1.
The model card also lists known limits: small text can still render poorly, character consistency between input and output images is not always kept, and spatial placement is sometimes confused.
Reported, but not what Google's pages say
Some coverage says 2.1 costs half as much as Nano Banana 2 at every resolution, and that Nano Banana 2 shuts down on October 29, 2026. Google's pricing table puts 2.1 at about half the price at 1K and 2K but about three quarters at 4K, and its deprecations page listed no shutdown date for gemini-3.1-flash-image on 2026-10-08.
Watch Nano Banana 2.1 if…
Your briefs mix many references — several characters and products in one frame — or you need lettering, multi-turn edits or a source video or PDF as input. Test it through the Gemini API until it reaches Imgo.
Stay on Nano Banana 2 if…
Your prompts already work and you need results today in Imgo's generator, or 512 px drafts are part of your workflow. Run the same prompt on 2.1 later and compare.
Nano Banana 2 prompt library →Frequently asked questions
- Can I use Nano Banana 2.1 on Imgo?
- Not yet. Nano Banana 2.1 is not in Imgo's image generator and has no Imgo credit price; this was last checked on 2026-10-08. Nano Banana 2 runs in Imgo's generator — the availability note at the top of this page reads the live catalog.
- What is the Nano Banana 2.1 model id?
- gemini-nano-banana-2.1 in the Gemini API, listed as stable with an October 6, 2026 release date. Nano Banana 2 is gemini-3.1-flash-image.
- Is Nano Banana 2 being retired?
- Not according to Google's deprecations page, which listed no shutdown date for gemini-3.1-flash-image on 2026-10-08. Check that page before you plan a migration.
- Will my Nano Banana 2 prompts work on 2.1?
- They are a sound starting point: 2.1 updates the same model line. Re-test prompts that depend on lettering, several characters or very wide formats, because those are the areas Google says changed.