Pairwise benchmark snapshot · Aug 1, 2026

FLUX.1 [dev] vs Nano Banana Pro (Gemini 3 Pro Image) benchmark

Name: FLUX.1 [dev] vs Nano Banana Pro (Gemini 3 Pro Image) AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

Comparing verified benchmark accuracy, speed, and token pricing between FLUX.1 [dev] and Nano Banana Pro (Gemini 3 Pro Image). Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Share Analysis:

Verified Head-to-Head Advantage Breakdown

5 direct benchmark disciplines evaluated across capability, speed, and cost

FLUX.1 [dev] (2)Nano Banana Pro (Gemini 3 Pro Image) (3)

FLUX.1 [dev]

2 of 5 Wins

✓Generation time✓Price per 1k images

Nano Banana Pro (Gemini 3 Pro Image)

3 of 5 Wins

✓Image Elo✓Prompt adherence✓Text rendering

Black Forest Labs

Leads 2 of 5 metrics

FLUX.1 [dev]

Open-weights non-commercial base model with 12B parameters, serving as the foundation for the open-source fine-tuning ecosystem.

Open Dev 12BImg Elo 1,180$30/1k imgs

Google

Leads 3 of 5 metrics

Nano Banana Pro (Gemini 3 Pro Image)

Google DeepMind frontier multimodal image generation flagship with Deep Research and complex multi-object spatial reasoning.

Img Elo 1,299$134/1k imgs

FLUX.1 Series Lineage & Sibling Variants

3 models

Currently comparing FLUX.1 [dev] vs Nano Banana Pro (Gemini 3 Pro Image). Alternative family tiers available.

Active: FLUX.1 [dev]

FLUX.1.1 [pro]$50/1k FLUX.1 [schnell]$15/1k

Top Rival Showdowns for FLUX.1 [dev]

All Matchups

Compare vs:vs GPT Image 2 (High)vs Reve 2.1 vs Nano Banana 2 (Gemini 3.1 Flash Image)vs Ideogram 4.0 (Quality)vs Recraft V4.1 Utility Pro

Image Quality LeaderNano Banana Pro (Gemini 3 Pro Image) Wins

Nano Banana Pro (Gemini 3 Pro Image)

Δ 119 Image Elo pts

Generation Speed LeaderFLUX.1 [dev] Wins

FLUX.1 [dev]

4s per render

Value per Dollar LeaderFLUX.1 [dev] Wins

FLUX.1 [dev]

$30/1k images

Head-to-Head Comparison

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

FLUX.1 [dev] (2)vsNano Banana Pro (Gemini 3 Pro Image) (3)

FLUX.1 [dev]: 2W (40%)Overall: Nano Banana Pro (Gemini 3 Pro Image)Nano Banana Pro (Gemini 3 Pro Image): 3W (60%)

← FLUX.1 [dev]Nano Banana Pro (Gemini 3 Pro Image) →

🏆Nano Banana Pro (Gemini 3 Pro Image)(3/3)

Visual Quality & Adherence

Arena Preference Elo, prompt fidelity & typography score

Benchmark

FLUX.1 [dev]vsNano Banana Pro (Gemini 3 Pro Image)

Image Elo

1,180vs1,299+119

Prompt adherence

87.5%vs92.5%+5%

Text rendering

86%vs93%+7%

FLUX.1 [dev]: 0WNano Banana Pro (Gemini 3 Pro Image): 3W

🏆FLUX.1 [dev](1/1)

Generation Latency

Time to render full-resolution image snapshot (seconds)

Benchmark

FLUX.1 [dev]vsNano Banana Pro (Gemini 3 Pro Image)

Generation time

4svs4.2s+0.2s

FLUX.1 [dev]: 1WNano Banana Pro (Gemini 3 Pro Image): 0W

🏆FLUX.1 [dev](1/1)

Cost Efficiency

API inference cost per 1,000 generated images

Benchmark

FLUX.1 [dev]vsNano Banana Pro (Gemini 3 Pro Image)

Price per 1k images

$30/1kvs$134/1k+$104/1k

FLUX.1 [dev]: 1WNano Banana Pro (Gemini 3 Pro Image): 0W

Side-by-Side Benchmark Matrix

Image Elo+119

FLUX.1 [dev]1,180

seed-bootstrap · Aug 1, 2026

Nano Banana Pro (Gemini 3 Pro Image)1,299

seed-bootstrap · Aug 1, 2026

Generation time+0.2s

FLUX.1 [dev]4s

seed-bootstrap · Aug 1, 2026

Nano Banana Pro (Gemini 3 Pro Image)4.2s

seed-bootstrap · Aug 1, 2026

Price per 1k images+$104/1k

FLUX.1 [dev]$30/1k

seed-bootstrap · Aug 1, 2026

Nano Banana Pro (Gemini 3 Pro Image)$134/1k

seed-bootstrap · Aug 1, 2026

Prompt adherence+5%

FLUX.1 [dev]87.5%

seed-bootstrap · Aug 1, 2026

Nano Banana Pro (Gemini 3 Pro Image)92.5%

seed-bootstrap · Aug 1, 2026

Text rendering+7%

FLUX.1 [dev]86%

seed-bootstrap · Aug 1, 2026

Nano Banana Pro (Gemini 3 Pro Image)93%

seed-bootstrap · Aug 1, 2026

Benchmark	FLUX.1 [dev]	Nano Banana Pro (Gemini 3 Pro Image)	Advantage Delta
Image Elo	1,180 seed-bootstrap · Aug 1, 2026	1,299 seed-bootstrap · Aug 1, 2026	+119
Generation time	4s seed-bootstrap · Aug 1, 2026	4.2s seed-bootstrap · Aug 1, 2026	+0.2s
Price per 1k images	$30/1k seed-bootstrap · Aug 1, 2026	$134/1k seed-bootstrap · Aug 1, 2026	+$104/1k
Prompt adherence	87.5% seed-bootstrap · Aug 1, 2026	92.5% seed-bootstrap · Aug 1, 2026	+5%
Text rendering	86% seed-bootstrap · Aug 1, 2026	93% seed-bootstrap · Aug 1, 2026	+7%

Interactive Simulator (USD)

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save up to 78% with FLUX.1 [dev]

Monthly Image Production Volume25k images / month (25000 imgs)

Quick Presets:

FLUX.1 [dev]$750.00 / mo

Rate: $30/1k

Nano Banana Pro (Gemini 3 Pro Image)$3,350.00 / mo

Rate: $134/1k

Estimated Cost Delta

FLUX.1 [dev] is estimated to save $2,600.00/month ($31,200/year).

Based on 25k images generated

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatinsufficient data

Need list prices.

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGinsufficient data

Need context sizes.

Screenshots / visioninsufficient data

Both accept images. Defaulting to the higher-Elo side (undefined).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	insufficient data	Need list prices.
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	insufficient data	Need context sizes.
Screenshots / vision	insufficient data	Both accept images. Defaulting to the higher-Elo side (undefined).

Community Sentiment

Cast Your Matchup Vote

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Community Discussions (0)

No comments posted on this matchup yet. Be the first to share an evaluation note!

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK

Black Forest Labs

FLUX.1 [dev]

Elo n/a

SWE-bench—

Speed (tok/s)—

Input / 1M Tokens$30/1k

Output / 1M Tokens$30/1k

Google

Nano Banana Pro (Gemini 3 Pro Image)

Elo n/a

SWE-bench—

Speed (tok/s)—

Input / 1M Tokens$134/1k

Output / 1M Tokens$134/1k

Frequently Asked Questions

Which is better overall, FLUX.1 [dev] or Nano Banana Pro (Gemini 3 Pro Image)?: We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, FLUX.1 [dev] or Nano Banana Pro (Gemini 3 Pro Image)?: SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?: List prices are missing for at least one model.
Which is faster, FLUX.1 [dev] or Nano Banana Pro (Gemini 3 Pro Image)?: We do not have TTFT for both models.
Which has the larger context window?: Context window is missing for at least one model.
Can I self-host either model?: FLUX.1 [dev] is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. FLUX.1 [dev] and Nano Banana Pro (Gemini 3 Pro Image) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All FLUX.1 [dev] matchups →|All Nano Banana Pro (Gemini 3 Pro Image) matchups →

FLUX.1 [dev] vs FLUX.1 [schnell] (next flux)Nano Banana Pro (Gemini 3 Pro Image) vs Nano Banana 2 (Gemini 3.1 Flash Image) (next nano-banana)FLUX.2 [max] vs Nano Banana Pro (Gemini 3 Pro Image)FLUX.2 [flex] vs Nano Banana Pro (Gemini 3 Pro Image)Nano Banana 2 Lite vs Nano Banana Pro (Gemini 3 Pro Image)FLUX.1.1 [pro] vs Nano Banana Pro (Gemini 3 Pro Image)

Benchmark

FLUX.1 [dev]

Nano Banana Pro (Gemini 3 Pro Image)

Advantage Delta

Image Elo

1,180

seed-bootstrap · Aug 1, 2026

1,299

seed-bootstrap · Aug 1, 2026

+119

Generation time

seed-bootstrap · Aug 1, 2026

4.2s

seed-bootstrap · Aug 1, 2026

+0.2s

Price per 1k images

$30/1k

seed-bootstrap · Aug 1, 2026

$134/1k

seed-bootstrap · Aug 1, 2026

+$104/1k

Prompt adherence

87.5%

seed-bootstrap · Aug 1, 2026

92.5%

seed-bootstrap · Aug 1, 2026

+5%

Text rendering

86%

seed-bootstrap · Aug 1, 2026

93%

seed-bootstrap · Aug 1, 2026

+7%

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatinsufficient data

Need list prices.

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGinsufficient data

Need context sizes.

Screenshots / visioninsufficient data

Both accept images. Defaulting to the higher-Elo side (undefined).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	insufficient data	Need list prices.
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	insufficient data	Need context sizes.
Screenshots / vision	insufficient data	Both accept images. Defaulting to the higher-Elo side (undefined).

Frequently Asked Questions

Which is better overall, FLUX.1 [dev] or Nano Banana Pro (Gemini 3 Pro Image)?

We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.

Which is better at coding, FLUX.1 [dev] or Nano Banana Pro (Gemini 3 Pro Image)?

SWE-bench is missing for at least one model, so we do not rank coding from a single number.

Which is cheaper to run in production?

List prices are missing for at least one model.

Which is faster, FLUX.1 [dev] or Nano Banana Pro (Gemini 3 Pro Image)?

We do not have TTFT for both models.

Which has the larger context window?

Context window is missing for at least one model.

Can I self-host either model?

FLUX.1 [dev] is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. FLUX.1 [dev] and Nano Banana Pro (Gemini 3 Pro Image) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.