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Black Forest Labs

FLUX.1 Kontext [dev]

VS
OpenAI

GPT Image 1.5

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

Decision Recommendation

👑 Editorial Verdict: GPT Image 1.5 stands out as the superior choice over FLUX.1 Kontext [dev]. It is more cost-effective (costing $0.0340 per image vs $N/A), generates images in a faster speed tier (fast), and supports a wider range of key feature strengths (like Text Rendering, In-Context Editing, Prompt Adherence).

Model Specs

FLUX.1 Kontext [dev]

Pricing & Speed

Cost per Generation
Self Host
Speed Tier
standard
Max Resolution2K

Model Strengths

In-Context EditingCharacter ConsistencyPrompt Adherence
Model Specs

GPT Image 1.5

Pricing & Speed

Cost per Generation
$34.00per 1,000 images
Speed TierFaster
fast
Max Resolution1.5K

Model Strengths

Text RenderingIn-Context EditingPrompt AdherenceCharacter Consistency

Frequently Asked Questions

FLUX.1 Kontext [dev] is cheaper as it is open source and can be self-hosted, whereas GPT Image 1.5 costs $0.0340 per image generation.

GPT Image 1.5 is faster, operating in the fast speed tier compared to FLUX.1 Kontext [dev] which is in the standard speed tier.

Both models share key strengths in: in context-editing, character consistency, prompt adherence. FLUX.1 Kontext [dev] specializes in: in context-editing, character consistency, prompt adherence. GPT Image 1.5 specializes in: text rendering, in context-editing, prompt adherence, character consistency.

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