Google Gemini (Nano Banana)
Gemini is the easiest way to keep one character looking the same across a whole story, and you can start for free. Google says its image models, Nano Banana 2 (the default since February 2026) and Nano Banana Pro, keep the resemblance of up to five people and up to 14 objects in a single workflow. In practice you upload a character image, then ask for new poses, outfits, scenes and camera angles in plain English, and the face, hair and clothes stay steady.
It also edits well. You can ask for one change ("give her a red scarf") without the rest of the picture being redrawn, which is what makes a character sheet or a picture-book spread workable.
The limits are about output, not skill. Free users get a small Nano Banana Pro quota before falling back to the standard model, and Google adds a visible watermark to Free and Pro images; only Ultra removes it. Google says it does not claim ownership of what you make, but it may generate similar images for other people.
Pick it if you want strong consistency without a subscription. Skip it if you need a saved character library, custom training or clean, unwatermarked files on a small budget.
Score breakdown
Key facts
- Pricing
- Free; Google AI Plus $4.99/month (The free plan includes image generation, with a limited Nano Banana Pro quota before it falls back to the standard model. Google AI Plus $4.99/month, Pro $19.99/month, Ultra from $99.99/month. All images carry an invisible SynthID watermark; Free and Pro images also show a visible one.)
- Free option
- Yes
- Platforms
- Web, iOS, Android, API
- Models
- Nano Banana 2 (Gemini 3.1 Flash Image, default since 26 Feb 2026) and Nano Banana Pro (Gemini 3 Pro Image)
- Consistency
- Up to 5 people and 14 objects in one workflow (Google's figures)
- Watermark
- Visible mark on Free and Pro images; removed on Ultra
- Ownership
- Google says it won't claim ownership of generated content
What we like
- Keeps up to five people consistent in one workflow (Google's figure)
- Plain-English edits change one detail and keep the rest
- Image generation is included on the free plan
- Google does not claim ownership of your images
Watch out for
- Visible watermark on Free and Pro images
- No saved character library or custom training in the app
- The free Nano Banana Pro quota is small and unpublished