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Black Forest Labs

FLUX.1 Kontext [dev]

VS
Google DeepMind

Nano Banana 2 (Gemini 3.1 Flash Image)

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

Decision Recommendation

👑 Editorial Verdict: Nano Banana 2 (Gemini 3.1 Flash Image) stands out as the superior choice over FLUX.1 Kontext [dev]. It is more cost-effective (costing $0.0670 per image vs $N/A), generates images in a faster speed tier (fast), and supports a wider range of key feature strengths (like In-Context Editing, Character Consistency, Text Rendering).

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

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

FLUX.1 Kontext [dev] is cheaper as it is open source and can be self-hosted, whereas Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.0670 per image generation.

Nano Banana 2 (Gemini 3.1 Flash Image) 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. 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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