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Google DeepMind

Imagen 4 Ultra

VS
Google DeepMind

Nano Banana 2 (Gemini 3.1 Flash Image)

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: This comparison represents a classic price-to-performance trade-off. Imagen 4 Ultra is the highly cost-efficient option, being 1.1x cheaper per generation. However, Nano Banana 2 (Gemini 3.1 Flash Image) operates at a faster speed tier (fast). Choose Imagen 4 Ultra for high-volume batches, and Nano Banana 2 (Gemini 3.1 Flash Image) for interactive, real-time application pipelines.

Model Specs

Imagen 4 Ultra

Pricing & Speed

Cost per Generation1.1x cheaper
$60.00per 1,000 images
Speed Tier
standard
Max Resolution2K

Model Strengths

RealismPrompt AdherenceText RenderingHigh ResolutionCreativity
Model Specs

Nano Banana 2 (Gemini 3.1 Flash Image)

Pricing & Speed

Cost per Generation
$67.00per 1,000 images
Speed TierFaster
fast
Max Resolution4K

Model Strengths

In-Context EditingCharacter ConsistencyText RenderingTypographyRealismPrompt Adherence

Frequently Asked Questions

Imagen 4 Ultra is cheaper, costing $0.0600 per image generation compared to Nano Banana 2 (Gemini 3.1 Flash Image) at $0.0670 per image.

Nano Banana 2 (Gemini 3.1 Flash Image) is faster, operating in the fast speed tier compared to Imagen 4 Ultra which is in the standard speed tier.

Both models share key strengths in: realism, prompt adherence, text rendering. Imagen 4 Ultra specializes in: realism, prompt adherence, text rendering, high resolution, creativity. Nano Banana 2 (Gemini 3.1 Flash Image) specializes in: in context-editing, character consistency, text rendering, typography, realism, prompt adherence.

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