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Black Forest Labs

FLUX.1 Kontext [dev]

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 1.0x cheaper per generation. However, FLUX.1 Kontext [dev] operates at a faster speed tier (standard). Choose Imagen 4 Fast for high-volume batches, and FLUX.1 Kontext [dev] for interactive, real-time application pipelines.

Model Specs

FLUX.1 Kontext [dev]

Pricing & Speed

Cost per Generation
Self Host
Speed TierFaster
standard
Max Resolution2K

Model Strengths

✨ In-Context Editing✨ Character Consistency✨ Prompt Adherence
Model Specs

Imagen 4 Fast

Pricing & Speed

Cost per Generation
$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

FLUX.1 Kontext [dev] is cheaper as it is open source and can be self-hosted, whereas Imagen 4 Fast costs $0.0200 per image generation.

FLUX.1 Kontext [dev] is faster, operating in the standard speed tier compared to Imagen 4 Fast which is in the real-time speed tier.

FLUX.1 Kontext [dev] specializes in: in context-editing, character consistency, prompt adherence. Imagen 4 Fast specializes in: real time, high volume.

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