Compare · Last checked October 20, 2026
ChatGPT vs Gemini: two assistants that make and edit pictures
Both ChatGPT and Gemini are general assistants that also generate and edit images. Gemini runs on Google's Nano Banana models, lets you change a background, replace an object or add an element by asking, and combines two uploaded pictures; it adds a visible watermark and an invisible SynthID mark. ChatGPT lets you select an area to change and comment on images in a Canvas view. Gemini's paid plans start lower, at $4.99 a month for Google AI Plus, while ChatGPT Go is $8, as of October 2026.
We make ImageQuarry, which is not one of these two products. We compared ChatGPT and Gemini using their own public pages, checked October 20, 2026.
Last updated October 20, 2026
At a glance
| ChatGPT | Gemini | |
|---|---|---|
| Editing by asking | Select an area and describe the change for it | Ask Gemini to change the background, replace an object or add an element |
| Mixing images | A small set of references for content and style | Upload two pictures and combine them into one image |
| Download size | Not stated on the pages read | 2K with a Google AI plan, 1K without one |
| Marking | Not stated on the pages read | Visible watermark plus invisible SynthID |
| Lowest paid plan, October 2026 | Go at $8 a month | Google AI Plus at $4.99 a month |
ChatGPT and Gemini: the differences that matter
The models behind each assistant
Gemini's overview names Nano Banana 2 as its free model and Nano Banana 2.1 for Google AI plans, with "Redo with Pro" for Nano Banana Pro, though its help page lists the models differently. ChatGPT's docs say built-in image generation uses gpt-image-2, and its September 2026 release notes describe ChatGPT Images 2.5.
Watermarks on what you download
Gemini says it marks images with an invisible SynthID watermark as well as a visible one. The ChatGPT image pages read do not mention a watermark either way.
Price of the first paid tier
Google AI Plus costs $4.99 a month and Google AI Pro $19.99. ChatGPT Go costs $8 and Plus $20 a month, as of October 2026.
Working through many images
ChatGPT's Canvas view shows the images from one chat together and lets you comment on one or more of them. Gemini keeps generated images in a Library in the sidebar, and you reopen one there and chat to change it.
Download size by plan
Gemini's help page says images download at 2K with a Google AI plan and 1K without, while its overview lists 2K for the free model. The ChatGPT pages read state no download size.
ChatGPT vs Gemini, side by side
Checked against each vendor's public pages on October 20, 2026. "Not stated" means the pages we read do not say; it is not a claim that the feature is missing.
| Topic | ChatGPT | Gemini |
|---|---|---|
| Image models named | gpt-image-2 per the docs; Images 2.5 per release notes | Nano Banana 2, Nano Banana 2.1 and Nano Banana Pro |
| Edit an uploaded image | Attach it and ask for the edit | Upload an image and ask Gemini to make edits |
| References | One image for content, another for style or layout | Apply texture, color or style from a reference; combine two pictures |
| Where images live | In the chat, with Focused and Canvas views | Library in the sidebar; Export to Docs |
| Download size | Not stated | 2K with a Google AI plan, 1K without |
| Age requirement | Not stated on the pages read | 18 or over to generate and edit images |
| Apps | Web, iOS, Android, desktop | Web, Android, iPhone and iPad, desktop |
As of 2026-10-20
Sources: ChatGPT page (Wayback capture); ChatGPT image generation.md; ChatGPT 6825453 chatgpt release notes; ChatGPT page (Wayback capture); ChatGPT pricing; ChatGPT space.md; Gemini image generation; Gemini 14286560?hl=en; Gemini subscriptions
Pricing
Prices as of October 2026, from each vendor's own pages. Credits are not comparable across products, because each vendor defines its own credit. Check the vendor for current pricing.
| Product | Plan | Price | Includes |
|---|---|---|---|
| ChatGPT | Free | $0 per month | Limited image creation |
| ChatGPT | Go | $8 per month | More image creation |
| ChatGPT | Plus | $20 per month | More complex and accurate image creation; image generation with Thinking |
| ChatGPT | Pro | From $100 per month | Plans at $100, $200 or $500 a month; image generation with Thinking |
| ChatGPT | Business | $20 per user per month, billed annually | $25 per user per month when billed monthly; 2+ users |
| Gemini | Free | $0 per month | Image generation and editing |
| Gemini | Google AI Plus | $4.99 per month | Google AI plan (US price) |
| Gemini | Google AI Pro | $19.99 per month | Google AI plan (US price) |
| Gemini | Google AI Ultra | From $99.99 per month | $99.99 (5x) or $199.99 (20x) a month |
Prices as of 2026-10
About each product
ChatGPT
ChatGPT generates and edits images in a conversation. You can attach a reference image to edit it or to use it as guidance, select an area and describe the change, and use Canvas view to comment on several images. Image creation depends on plan, from limited on Free to more on Go ($8) and Plus ($20), and Pro starts at $100 a month. It runs on web, iOS, Android and desktop.
Gemini
Gemini's image feature is powered by Google's Nano Banana models. You ask Gemini to change a background, replace an object or add an element, upload an image to edit, or combine two pictures into one, and take texture, color or style from a reference photo. Images carry a visible watermark and SynthID, download at 2K with a Google AI plan, and need you to be 18 or over. Plans run from Free to Google AI Plus at $4.99 and Pro at $19.99 a month.
Which one fits your work
Choose ChatGPT when
- You want to comment on several images from one chat side by side
- You prefer selecting an exact area and describing the change for it
- You already pay for ChatGPT Plus or Pro for other work
Choose Gemini when
- You want the cheapest paid tier of the two, Google AI Plus at $4.99 a month
- You want to merge two uploaded pictures into one
- You already use Google Docs and want Export to Docs
- You want images marked as AI made, visibly and with SynthID
Where ImageQuarry fits
Both assistants put images inside a broader chat product. ImageQuarry is an image workspace instead: you describe or upload an image, ask for changes in words, and every change becomes a new version you can branch from. It includes Google's Nano Banana 2.1 as the default model, alongside Nano Banana Pro and two GPT Image models, and it keeps prompts, references and versions together in projects.
Questions about ChatGPT vs Gemini
Do ChatGPT and Gemini use the same image model?
No. Gemini names Google's Nano Banana models, and ChatGPT's docs name gpt-image-2, with release notes describing ChatGPT Images 2.5. Each vendor describes its own models only.
Which one adds a watermark?
Gemini says it uses an invisible SynthID watermark and a visible watermark on images. The ChatGPT pages read for this comparison do not mention a watermark.
Is there a free way to try both?
Yes for both, as of October 2026: ChatGPT's Free plan has limited image creation, and Gemini's Free plan includes image generation and editing.
Can I combine two photos into one?
Gemini says you can upload two pictures and combine them into one image. ChatGPT supports a small set of references, one defining the content and another the style or layout.
Sources
Every competitor fact on this page comes from the vendor's own pages, checked on the date shown. Recheck them before you buy.
Checked October 20, 2026
Create an image. Edit it with words. Keep refining.
Edit in words and keep the history
In ImageQuarry each request makes a new version and earlier ones stay, so you can return to any of them and try another direction.
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