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Black Forest Labs

FLUX 1.1 [pro]

VS
Google DeepMind

Imagen 4 Fast

✍️ 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 Fast is the highly cost-efficient option, being 2.0x cheaper per generation. However, FLUX 1.1 [pro] operates at a faster speed tier (fast). Choose Imagen 4 Fast for high-volume batches, and FLUX 1.1 [pro] for interactive, real-time application pipelines.

Model Specs

FLUX 1.1 [pro]

Pricing & Speed

Cost per Generation
$40.00per 1,000 images
Speed TierFaster
fast
Max Resolution2K

Model Strengths

✨ Realism✨ Prompt Adherence
Model Specs

Imagen 4 Fast

Pricing & Speed

Cost per Generation2.0x cheaper
$20.00per 1,000 images
Speed Tier
real-time
Max Resolution2K

Model Strengths

✨ Real-Time Speed✨ High-Volume Gen
Read our data collection methodology

Frequently Asked Questions

Imagen 4 Fast is cheaper, costing $0.0200 per image generation compared to FLUX 1.1 [pro] at $0.0400 per image.

FLUX 1.1 [pro] is faster, operating in the fast speed tier compared to Imagen 4 Fast which is in the real-time speed tier.

FLUX 1.1 [pro] specializes in: realism, prompt adherence. Imagen 4 Fast specializes in: real time, high volume.

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