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OpenAI vs Google

GPT Image 2.6 vs Nano Banana 2.1: same prompts, real outputs

OpenAI's GPT Image 2.6 (November 2026) and Google's Nano Banana 2.1 (October 2026) are the two newest closed image models. We ran the same five prompts on both — a poster, a menu, an infographic, a portrait and a product shot — and compared specs, price and what each got right.

GPT Image 2.6
Sunburst and Flare, 1K–4K, 15 ratios, 5 quality tiers, 16 references, PNG/JPG/WEBP/GIF/SVG
Nano Banana 2.1
gemini-nano-banana-2.1, 1K–4K, 14 ratios from 1:8 to 8:1, 14 references, optional web search
Best at
GPT 2.6: posters, layouts, products, GIF and SVG · NB 2.1: long text lists, wide banners, many-reference edits
Try
  • GPT Image 2.6
  • Nano Banana 2.1
  • GPT Image 2.6 Sunburst output: a movie poster titled NIGHT SHIFT AT THE OBSERVATORY with an astronomer in a red scarf under an aurora
  • Nano Banana 2.1 output: the NIGHT SHIFT AT THE OBSERVATORY poster with an astronomer on a catwalk
  • GPT Image 2.6 Sunburst output: a LITTLE FERN CAFÉ chalkboard menu with coffee, tea and bakes prices on a brick wall
  • Nano Banana 2.1 output: the LITTLE FERN CAFÉ chalkboard menu with every price aligned
  • Real outputs
  • Official sources
  • Free to start
  • No watermark

Updated by the

Quick answer

Updated

GPT Image 2.6 or Nano Banana 2.1: which should you use?

Pick GPT Image 2.6 for posters, layouts, product shots and anything that moves or must scale: it kept every poster line clean, and it is the only one of the two that outputs animated GIF and SVG. Pick Nano Banana 2.1 for long, structured text, many-reference edits, very wide banners and web-grounded subjects: it kept a seven-item price list perfectly aligned, takes 14 references, goes to 8:1 and can search the web. On Kenerate GPT Image 2.6 costs 15 credits at medium 1K and Nano Banana 2.1 21.

Key facts

Makers
OpenAI · Google
Released
4 Nov 2026 · 6 Oct 2026
References
16 · 14
Widest ratio
3:1 · 8:1
GIF / SVG output
Yes · No
Web search
No · Yes
Our 5 tests
GPT 2.6 3 · NB 2.1 1 · 1 tie

Side by side

GPT Image 2.6 vs Nano Banana 2.1 at a glance

Model facts from OpenAI's and Google's own pages; Kenerate settings from the app's model list.

GPT Image 2.6 vs Nano Banana 2.1 at a glance — checked 12 November 2026
GPT Image 2.6Nano Banana 2.1
Maker · releasedOpenAI · 4 Nov 2026Google · 6 Oct 2026
VersionsSunburst (precision) · Flare (speed)One
Reference imagesUp to 16Up to 14
Aspect ratios on Kenerate15, from 1:3 to 3:114, from 1:8 to 8:1
Output size1K, 2K, 4K1K, 2K, 4K
Quality controlFive tiers + complexityNot adjustable
Animated GIFYes: 2–16 framesNo
SVG exportYes: Text to imageNo
Web search groundingNoYes: Optional

Sources: Introducing Images 2.6 — OpenAI · Gemini API docs: Nano Banana 2.1 (gemini-nano-banana-2.1) — Google AI for Developers

Our tests

Five prompts, one try each

Who got closer to the prompt in each test. Every pair is shown below with the full prompt.

Five prompts, one try each — checked 12 November 2026
TestWinnerWhy
Movie posterGPT Image 2.6Both spelled the title, tagline and release line right. Nano Banana 2.1 added a block of garbled small-print credits we asked it not to; GPT Image 2.6 kept the poster clean.
Chalkboard menuNano Banana 2.1Every item and price was right on both. Nano Banana 2.1 kept each price on its own row; GPT Image 2.6 slid the three coffee prices down one line.
InfographicTieAll words right on both. GPT Image 2.6 kept our mixed-case labels and put each step in a tidy row; Nano Banana 2.1 set the labels in capitals and zig-zagged the icons, which some will prefer.
Street portraitGPT Image 2.6Both look like real photographs. GPT Image 2.6 framed the portrait we asked for, with the nose stud and fine skin detail; Nano Banana 2.1 pulled back to a wider street scene where those details get lost.
Perfume product shotGPT Image 2.6Both etched AURELIA correctly. GPT Image 2.6 gave sharper EAU DE PARFUM lettering, deeper facets and a stronger amber backlight; Nano Banana 2.1's small text came out soft.

GPT Image 2.6 Sunburst at medium quality, 1K; Nano Banana 2.1 at 1K. No retries, no retouching.

Same prompt

Movie poster: GPT Image 2.6 vs Nano Banana 2.1

GPT Image 2.6 wins. Both spelled the title, tagline and release line right. Nano Banana 2.1 added a block of garbled small-print credits we asked it not to; GPT Image 2.6 kept the poster clean.

PromptCinematic movie poster for a quiet sci-fi drama titled "NIGHT SHIFT AT THE OBSERVATORY". A lone astronomer in a red scarf stands on the catwalk of an old domed observatory, the slit open to a sky full of stars and a faint green aurora. Tagline at the top in small spaced caps: "SOME DISCOVERIES ONLY HAPPEN AFTER MIDNIGHT". Bottom billing block in small condensed type: "IN CINEMAS 14 FEBRUARY". Deep navy and teal palette with warm lamp light, film grain. Spell every word exactly as written, no other text.

  • GPT Image 2.6 Sunburst: Cinematic movie poster for a quiet sci-fi drama titled "NIGHT SHIFT AT THE OBSERVATORY". A lone astronomer in a red scarf stands on the catwalk of an old domed observatory, the slit open to a sky full of stars and a faint green aurora. Tagline at the top in small spaced caps: "SOME DISCOVERIES ONLY HAPPEN AFTER MIDNIGHT". Bottom billing block in small condensed type: "IN CINEMAS 14 FEBRUARY". Deep navy and teal palette with warm lamp light, film grain. Spell every word exactly as written, no other text.GPT Image 2.6 SunburstOpenAI · medium 1K
  • Nano Banana 2.1: Cinematic movie poster for a quiet sci-fi drama titled "NIGHT SHIFT AT THE OBSERVATORY". A lone astronomer in a red scarf stands on the catwalk of an old domed observatory, the slit open to a sky full of stars and a faint green aurora. Tagline at the top in small spaced caps: "SOME DISCOVERIES ONLY HAPPEN AFTER MIDNIGHT". Bottom billing block in small condensed type: "IN CINEMAS 14 FEBRUARY". Deep navy and teal palette with warm lamp light, film grain. Spell every word exactly as written, no other text.Nano Banana 2.1Google · 1K

Same prompt

Chalkboard menu: GPT Image 2.6 vs Nano Banana 2.1

Nano Banana 2.1 wins. Every item and price was right on both. Nano Banana 2.1 kept each price on its own row; GPT Image 2.6 slid the three coffee prices down one line.

PromptChalkboard menu for a small café called "LITTLE FERN CAFÉ", hand-lettered in white and pastel chalk, hanging on a brick wall. Sections and items exactly: "COFFEE" — "Espresso 2.50", "Flat White 3.40", "Oat Latte 3.80"; "TEA" — "Masala Chai 3.20", "Matcha 3.90"; "BAKES" — "Cardamom Bun 2.90", "Banana Bread 3.10". Small doodles of a fern leaf and a coffee cup. Photographed straight on, soft morning light. Spell every word and price exactly as written, no other text.

  • GPT Image 2.6 Sunburst: Chalkboard menu for a small café called "LITTLE FERN CAFÉ", hand-lettered in white and pastel chalk, hanging on a brick wall. Sections and items exactly: "COFFEE" — "Espresso 2.50", "Flat White 3.40", "Oat Latte 3.80"; "TEA" — "Masala Chai 3.20", "Matcha 3.90"; "BAKES" — "Cardamom Bun 2.90", "Banana Bread 3.10". Small doodles of a fern leaf and a coffee cup. Photographed straight on, soft morning light. Spell every word and price exactly as written, no other text.GPT Image 2.6 SunburstOpenAI · medium 1K
  • Nano Banana 2.1: Chalkboard menu for a small café called "LITTLE FERN CAFÉ", hand-lettered in white and pastel chalk, hanging on a brick wall. Sections and items exactly: "COFFEE" — "Espresso 2.50", "Flat White 3.40", "Oat Latte 3.80"; "TEA" — "Masala Chai 3.20", "Matcha 3.90"; "BAKES" — "Cardamom Bun 2.90", "Banana Bread 3.10". Small doodles of a fern leaf and a coffee cup. Photographed straight on, soft morning light. Spell every word and price exactly as written, no other text.Nano Banana 2.1Google · 1K

Same prompt

Infographic: GPT Image 2.6 vs Nano Banana 2.1

A tie. All words right on both. GPT Image 2.6 kept our mixed-case labels and put each step in a tidy row; Nano Banana 2.1 set the labels in capitals and zig-zagged the icons, which some will prefer.

PromptClean editorial infographic titled "HOW A COFFEE BEAN BECOMES YOUR CUP". Five numbered steps in a vertical flow, each with a flat illustrated icon and a short label exactly: "1 Harvest", "2 Wash & Dry", "3 Roast", "4 Grind", "5 Brew". Warm cream background, coffee-brown and terracotta palette, rounded sans-serif type, thin connecting arrows between steps. Spell every word exactly as written, no other text.

  • GPT Image 2.6 Sunburst: Clean editorial infographic titled "HOW A COFFEE BEAN BECOMES YOUR CUP". Five numbered steps in a vertical flow, each with a flat illustrated icon and a short label exactly: "1 Harvest", "2 Wash & Dry", "3 Roast", "4 Grind", "5 Brew". Warm cream background, coffee-brown and terracotta palette, rounded sans-serif type, thin connecting arrows between steps. Spell every word exactly as written, no other text.GPT Image 2.6 SunburstOpenAI · medium 1K
  • Nano Banana 2.1: Clean editorial infographic titled "HOW A COFFEE BEAN BECOMES YOUR CUP". Five numbered steps in a vertical flow, each with a flat illustrated icon and a short label exactly: "1 Harvest", "2 Wash & Dry", "3 Roast", "4 Grind", "5 Brew". Warm cream background, coffee-brown and terracotta palette, rounded sans-serif type, thin connecting arrows between steps. Spell every word exactly as written, no other text.Nano Banana 2.1Google · 1K

Same prompt

Street portrait: GPT Image 2.6 vs Nano Banana 2.1

GPT Image 2.6 wins. Both look like real photographs. GPT Image 2.6 framed the portrait we asked for, with the nose stud and fine skin detail; Nano Banana 2.1 pulled back to a wider street scene where those details get lost.

PromptCandid street portrait photograph of a fictional flower seller in her 50s at a morning market in Mumbai, warm smile, silver nose stud, marigold-orange cotton saree, strings of jasmine and marigold garlands hanging around her stall. Golden-hour side light, 85mm lens, shallow depth of field, natural skin texture and fine wrinkles, real fabric detail. Documentary photography, a real photograph.

  • GPT Image 2.6 Sunburst: Candid street portrait photograph of a fictional flower seller in her 50s at a morning market in Mumbai, warm smile, silver nose stud, marigold-orange cotton saree, strings of jasmine and marigold garlands hanging around her stall. Golden-hour side light, 85mm lens, shallow depth of field, natural skin texture and fine wrinkles, real fabric detail. Documentary photography, a real photograph.GPT Image 2.6 SunburstOpenAI · medium 1K
  • Nano Banana 2.1: Candid street portrait photograph of a fictional flower seller in her 50s at a morning market in Mumbai, warm smile, silver nose stud, marigold-orange cotton saree, strings of jasmine and marigold garlands hanging around her stall. Golden-hour side light, 85mm lens, shallow depth of field, natural skin texture and fine wrinkles, real fabric detail. Documentary photography, a real photograph.Nano Banana 2.1Google · 1K

Same prompt

Perfume product shot: GPT Image 2.6 vs Nano Banana 2.1

GPT Image 2.6 wins. Both etched AURELIA correctly. GPT Image 2.6 gave sharper EAU DE PARFUM lettering, deeper facets and a stronger amber backlight; Nano Banana 2.1's small text came out soft.

PromptLuxury product photograph of a faceted glass perfume bottle with a brushed gold cap, the word "AURELIA" etched on the glass in thin serif capitals and "EAU DE PARFUM" in small type below. The bottle stands on a wet black stone slab with a few drops of water, soft amber backlight, a sprig of orange blossom beside it, shallow depth of field, studio photography, 100mm macro lens. No other text.

  • GPT Image 2.6 Sunburst: Luxury product photograph of a faceted glass perfume bottle with a brushed gold cap, the word "AURELIA" etched on the glass in thin serif capitals and "EAU DE PARFUM" in small type below. The bottle stands on a wet black stone slab with a few drops of water, soft amber backlight, a sprig of orange blossom beside it, shallow depth of field, studio photography, 100mm macro lens. No other text.GPT Image 2.6 SunburstOpenAI · medium 1K
  • Nano Banana 2.1: Luxury product photograph of a faceted glass perfume bottle with a brushed gold cap, the word "AURELIA" etched on the glass in thin serif capitals and "EAU DE PARFUM" in small type below. The bottle stands on a wet black stone slab with a few drops of water, soft amber backlight, a sprig of orange blossom beside it, shallow depth of field, studio photography, 100mm macro lens. No other text.Nano Banana 2.1Google · 1K

Leaderboards

What public leaderboards say

As reported by a third-party tracker in November 2026. Each board has its own scale — compare ranks, not numbers.

What public leaderboards say — checked 12 November 2026
BoardGPT Image 2.6 SunburstNano Banana 2.1
Rapidata, text to image1316 · 1st1123
Artificial Analysis, text to image1stLower
Arena, text to image (preliminary)1409 · 2ndLower
Arena, multi-image editFlare 1439 · 4th1431 · 5th

Sources: ChatGPT Images 2.6: specs, benchmarks and comparisons — Kingy AI

Models

Every version on Kenerate

Both families in the image generator, and what each version is good at.

  • OpenAI

    GPT Image 2.6 Sunburst

    Reference images
    Up to 16
    Output
    1K to 4K

    Best for

    Precision and edits · GIF, SVG

    Open GPT Image 2.6 Sunburst

  • OpenAI

    GPT Image 2.6 Flare

    Reference images
    Up to 16
    Output
    1K to 4K

    Best for

    Fastest GPT Image

    Open GPT Image 2.6 Flare

  • Google

    Nano Banana 2.1

    Reference images
    Up to 14
    Output
    1K to 4K

    Best for

    14 ratios to 8:1, web search

    Open Nano Banana 2.1
  • Nano Banana 2 title card — many reference images

    Google

    Nano Banana 2

    Reference images
    Up to 14
    Output
    1K

    Best for

    Cheaper Google option

    Open Nano Banana 2

Our take

Which to pick for what

Neither won every test. GPT Image 2.6 was cleaner on posters and products and adds GIF and SVG; Nano Banana 2.1 was tidier on a long menu and wins on wide formats and web search. Both are closed models with their makers' content filters.

Pick GPT Image 2.6 for

  • Posters and covers that stay clean — no invented small print in our test.
  • Product shots with crisp lettering and lighting, and edits that keep the product (see the GPT Image 2.6 page).
  • Animated GIF and SVG output — Nano Banana 2.1 has neither.
  • 16 references and five quality tiers, so drafts can run at low quality and only the keeper at high.

Pick Nano Banana 2.1 for

  • Long, structured lists: Nano Banana 2.1 kept a seven-row price list aligned, which GPT Image 2.6 didn't.
  • Very wide or tall formats: Nano Banana 2.1 goes to 8:1 and 1:8; GPT Image 2.6 stops at 3:1.
  • Real-world subjects that need fresh facts: Nano Banana 2.1 can ground on Google Search.
  • Many-reference composites with up to 14 inputs are what Nano Banana is built for.

How to

How to compare GPT Image 2.6 and Nano Banana 2.1 on Kenerate

  1. Step 1

    Open the image generator

    Go to /app/image. Both models are in the model menu; they need a one-time credit pack.

  2. Step 2

    Run one prompt on GPT Image 2.6

    Pick GPT Image 2.6 Sunburst, set the ratio and quality, and generate.

  3. Step 3

    Switch to Nano Banana 2.1

    Keep the same prompt and ratio, pick Nano Banana 2.1 and generate again.

  4. Step 4

    Compare and keep the best

    Check every word and detail. Edit the winner with references, or animate it in /app/video.

1Describe your image2Pick an image model3Set the aspect ratio and size4Click Create5Open and download your image
Kenerate AI Image Studio with a text prompt typed into the prompt box

Open Image Studio and type what you want to see — subject, style, lighting and mood.

1 / 5 · Describe your image

Watch the tour · 1:23

Prompts, styles, references, edit, Arena & chat

Chapters

FAQ

GPT Image 2.6 vs Nano Banana 2.1 questions

Is GPT Image 2.6 better than Nano Banana 2.1?

Not across the board. In our five same-prompt tests GPT Image 2.6 won three (poster, portrait, product), Nano Banana 2.1 won one (a long chalkboard menu) and one was a tie (an infographic). GPT Image 2.6 also outputs GIF and SVG; Nano Banana 2.1 adds web search and wider ratios.

Link to this answer

Which is better at text, GPT Image 2.6 or Nano Banana 2.1?

Both spelled every word right in our tests. The difference was layout: GPT Image 2.6 kept a poster free of invented small print, while Nano Banana 2.1 kept a long price list aligned row by row. For dense lists try both; for posters and covers start with GPT Image 2.6.

Link to this answer

What do the benchmarks say?

Third-party trackers report GPT Image 2.6 Sunburst first on Rapidata's text-to-image leaderboard (1316 vs 1123 for Nano Banana 2.1) and on Artificial Analysis, and second on Arena's preliminary board, with Flare narrowly ahead of Nano Banana 2.1 on Arena's multi-image edit board. Neither OpenAI nor Google publishes a head-to-head, so treat leaderboards as a guide.

Link to this answer

Which is cheaper?

On Kenerate GPT Image 2.6 costs 15 credits at medium quality and 1K, and 9 at low; Nano Banana 2.1 costs 21 at 1K. Through the makers' own APIs both bill by tokens, so the price per image depends on size and settings.

Link to this answer

Can Nano Banana 2.1 make GIFs or SVGs?

No. Nano Banana 2.1 outputs still images. Animated GIF and SVG export are new in GPT Image 2.6; on Kenerate you pick them as the output format in /app/image.

Link to this answer

Which handles more reference images?

GPT Image 2.6 takes up to 16 references on Kenerate and Nano Banana 2.1 up to 14 (Google lists 4 characters and 10 objects). Nano Banana is built around multi-image fusion; GPT Image 2.6 Sunburst is built to keep details consistent across rounds of edits.

Link to this answer

Which supports wider images?

Nano Banana 2.1: 14 ratios on Kenerate from 1:8 to 8:1, good for banners and tall strips. GPT Image 2.6 has 15 ratios from 1:3 to 3:1.

Link to this answer

Can I use both without ChatGPT or Gemini subscriptions?

Yes. Kenerate AI runs both in the browser on one credit balance: pick either model in /app/image and pay per image. No OpenAI or Google account, API key or subscription is needed.

Link to this answer

In depth

GPT Image 2.6 vs Nano Banana 2.1, in depth

Background, how to prompt it, and when to pick something else.

On this page

How we tested

We wrote five prompts that each stress one skill — poster lettering, a long price list, an infographic, a documentary portrait and a product shot with etched text — and ran each once on GPT Image 2.6 Sunburst (medium quality, 1K) and once on Nano Banana 2.1 (1K) in Kenerate on 12 November 2026. No retries, no retouching. The full prompts are under each image above.

Keep going

More models

By Last updated and reviewed

We run these models in the Kenerate generator. Model facts come from the makers' own pages; specs and limits were checked against our code; the examples are our own outputs.

Sources: Introducing Images 2.6 — OpenAI · Gemini API docs: Nano Banana 2.1 (gemini-nano-banana-2.1) — Google AI for Developers · ChatGPT Images 2.6: specs, benchmarks and comparisons — Kingy AI

Run one prompt on both

One credit balance for both models. No watermark.

Try GPT Image 2.6 vs Nano Banana 2.1

Tried it? Tell us how it went