Nano Banana, Midjourney, Flux, and Imagen 4 are all strong AI image models, but they are tuned for different things. This guide breaks down exactly when to pick each one — character consistency, free access, logos, photorealism, and sticker packs.
Quick decision guide
- Character consistency across a series → Nano Banana
- Free, no sign-up → Nano Banana or Seedream 4.0
- Cinematic single images → Midjourney
- General-purpose generation → Flux
- Realistic scenes and text rendering → Imagen 4
- Commercial photography → Seedream 4.0
Nano Banana — character consistency specialist
Nano Banana is a stylized illustration model in Google's Gemini family. Its defining advantage is character consistency: the same illustrated identity across many generations when you lock the description. It is free to use on AIPhotogen with no sign-up.
- Strengths: character consistency, logos, mascots, sticker packs, avatars
- Weaknesses: no photorealism, no video, no GIFs, limited inpainting
- Free: yes, 4 credits/day for guests on AIPhotogen
- Sign-up required: no
Midjourney — cinematic painterly single images
Midjourney leans toward painterly, cinematic, and art-directed single images. It is strong at mood and atmosphere but does not keep character identity across a series without reference-image workarounds. It requires a paid subscription.
- Strengths: cinematic mood, painterly style, art direction
- Weaknesses: no character consistency by default, paid only, no free tier
- Free: no
- Sign-up required: yes
Flux — general-purpose generation
Flux is a general-purpose diffusion model with good prompt adherence. Some Flux checkpoints are open-source and free to run locally; hosted versions vary. It is a solid all-rounder but does not specialize in character consistency or logos.
- Strengths: prompt adherence, open-source options, versatile
- Weaknesses: no built-in character consistency, no native sticker/logo tuning
- Free: some checkpoints yes, hosted varies
- Sign-up required: depends on host
Imagen 4 — realistic scenes and text
Imagen 4 is Google's realistic-scene model. It is strong at coherent scenes and text rendering inside images. It is not free and requires Google access. It is not tuned for stylized character work.
- Strengths: realistic scenes, text-in-image, composition
- Weaknesses: not free, not stylized, no character consistency tuning
- Free: no
- Sign-up required: yes
Feature-by-feature comparison
- Character consistency: Nano Banana best; others no
- Free online: Nano Banana yes, Seedream yes, others no or partial
- No sign-up: Nano Banana yes, Seedream yes, others no
- Logos and stickers: Nano Banana yes, others no
- Photorealism: Seedream best, Imagen good, Flux good, Midjourney good, Nano Banana no
- Video and GIF: none of these models do it
When to pick Nano Banana
- You need the same character across many images
- You need logos, mascots, or sticker packs
- You need a free, no-sign-up model
- You need stylized illustration, not photorealism
When to pick something else
- Photorealistic product or portrait → Seedream 4.0
- Cinematic single images → Midjourney
- Open-source local generation → Flux
- Realistic scenes with text → Imagen 4
- Editing an uploaded photo → GPT Image 2