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Head-to-head comparison

FLUX.2 Flex vs. FLUX.2 Pro

Compare shared capability tests, arena scores with documented retrieval dates, task-specific image pricing, and verified specifications. Research benchmarks, preference arenas, and our n = 1 samples remain separate.

shared result series
16
shared sample prompts
4
latest arena retrieval
2026-08-26

Change image model selection

Specifications and cost

General specifications and task-specific pricing

A model can have one price for generating new images and another for editing. Prices therefore remain tied to the corresponding arena configuration.

Specifications and pricing for FLUX.2 Flex and FLUX.2 Pro
AttributeFLUX.2 FlexFLUX.2 Pro
ProviderBlack Forest LabsBlack Forest Labs
ReleasedNovember 2025November 2025
AccessAPI, Web appAPI, Web app
LifecycleNo separate lifecycle noticeNo separate lifecycle notice
WeightsProprietaryProprietary
ParametersNot publishedNot published
Maximum output4 Megapixel4 Megapixel
Arena configurationFlexPro
Text-to-image price$60 per 1,000 images$30 per 1,000 images
Editing price$120 per 1,000 images$45 per 1,000 images
Technical sourceModel sourceVerified 2026-08-15Model sourceVerified 2026-08-15
FLUX.2 FlexFLUX.2 Pro
Text to Image ArenaUSD per 1,000 images at 1,024 × 1,024 pixels
FLUX.2 Flex$60
FLUX.2 ProLower price$30
Image Editing ArenaUSD per 1,000 images at 1,024 × 1,024 pixels
FLUX.2 Flex$120
FLUX.2 ProLower price$45

Key to the marks:better valuebetter, but not conclusivetie

Prompt adherence and specialist tests

Shared capability benchmarks

Every matchup includes the same four Gradually sample tasks. For each task, one archived first output from every model is ranked in three differently ordered, model-blind passes. The published 0-100 value normalizes the mean rank. It must still be read as an n = 1 sample per model. No exact shared result from the integrated research benchmarks is available for this pair.

FLUX.2 FlexFLUX.2 Pro
Gradually sample test: Typography and layoutMean of three blind ranks across all 28 first outputs, n = 1 each
FLUX.2 FlexHigher blind-rank score76.6 / 100
FLUX.2 Pro50.6 / 100
Gradually sample test: Product photographyMean of three blind ranks across all 28 first outputs, n = 1 each
FLUX.2 FlexHigher blind-rank score46.9 / 100
FLUX.2 Pro43.2 / 100
Gradually sample test: Character and detailMean of three blind ranks across all 28 first outputs, n = 1 each
FLUX.2 Flex39.5 / 100
FLUX.2 ProHigher blind-rank score70.4 / 100
Gradually sample test: InfographicMean of three blind ranks across all 28 first outputs, n = 1 each
FLUX.2 FlexHigher blind-rank score25.9 / 100
FLUX.2 Pro24.7 / 100

Key to the marks:better valuebetter, but not conclusivetie

Capability benchmark scores for FLUX.2 Flex and FLUX.2 Pro
BenchmarkFLUX.2 FlexFLUX.2 Pro
Gradually sample test: Typography and layout
Higher blind-rank score76.6 / 100
Mean rank: 7.33 (6 / 10 / 6)
Five rubric scores
Headline: 1.67 / 2
Subline: 1.67 / 2
Text control: 1.67 / 2
Visual brief: 1.33 / 2
Layout: 1 / 2
50.6 / 100
Mean rank: 14.33 (11 / 22 / 10)
Five rubric scores
Headline: 1.67 / 2
Subline: 1.67 / 2
Text control: 1.67 / 2
Visual brief: 1 / 2
Layout: 1.33 / 2
Gradually sample test: Product photography
Higher blind-rank score46.9 / 100
Mean rank: 15.33 (12 / 19 / 15)
Five rubric scores
Subject: 1.33 / 2
Time: 1.33 / 2
Watch details: 1.33 / 2
Photography: 1.33 / 2
Exclusions: 1.33 / 2
43.2 / 100
Mean rank: 16.33 (13 / 22 / 14)
Five rubric scores
Subject: 1.33 / 2
Time: 1.33 / 2
Watch details: 1.33 / 2
Photography: 1.33 / 2
Exclusions: 1.33 / 2
Gradually sample test: Character and detail
39.5 / 100
Mean rank: 17.33 (27 / 7 / 18)
Five rubric scores
Scene: 1.33 / 2
Wardrobe: 1.33 / 2
Anatomy: 1.33 / 2
Props: 1 / 2
Environment: 1 / 2
Higher blind-rank score70.4 / 100
Mean rank: 9 (13 / 1 / 13)
Five rubric scores
Scene: 1.33 / 2
Wardrobe: 1.33 / 2
Anatomy: 1.33 / 2
Props: 1.33 / 2
Environment: 1.33 / 2
Gradually sample test: Infographic
Higher blind-rank score25.9 / 100
Mean rank: 21 (21 / 19 / 23)
Five rubric scores
Title: 1.67 / 2
Sequence: 1 / 2
Labels: 1 / 2
Diagram: 1 / 2
Clarity: 1 / 2
24.7 / 100
Mean rank: 21.33 (20 / 23 / 21)
Five rubric scores
Title: 1.67 / 2
Sequence: 1 / 2
Labels: 0.67 / 2
Diagram: 0.67 / 2
Clarity: 1 / 2

Key to the marks:better valuebetter, but not conclusivetie

Independent preference tests

Shared arena benchmarks

Artificial Analysis and Arena derive scores from blind comparisons. Raters see outputs for the same prompt and choose the image they prefer. Separate series cover text rendering, photorealism, portraits, art, commercial design, and image editing. Confidence intervals indicate how certain a measured lead is.

12 shared result series
FLUX.2 FlexFLUX.2 Pro
Text to Image ArenaBlind preference from the same prompt, higher is better
FLUX.2 FlexNo clear lead1,224 Elo
FLUX.2 Pro1,208 Elo
Image Editing ArenaBlind preference from the same prompt, higher is better
FLUX.2 Flex1,162 Elo
FLUX.2 ProNo clear lead1,170 Elo
LMArena Text to Image: 3D modelingBlind preference from the same prompt, higher is better
FLUX.2 FlexHigher score1,171.967
FLUX.2 Pro1,149.387
LMArena Text to Image: ArtBlind preference from the same prompt, higher is better
FLUX.2 Flex1,155.954
FLUX.2 ProNo clear lead1,163.048
LMArena Text to Image: CartoonBlind preference from the same prompt, higher is better
FLUX.2 FlexNo clear lead1,162.335
FLUX.2 Pro1,161.019
LMArena Text to Image: Commercial designBlind preference from the same prompt, higher is better
FLUX.2 FlexHigher score1,173.137
FLUX.2 Pro1,156.46
LMArena Text to Image: OverallBlind preference from the same prompt, higher is better
FLUX.2 FlexNo clear lead1,156.466
FLUX.2 Pro1,154.786
LMArena Text to Image: PhotorealismBlind preference from the same prompt, higher is better
FLUX.2 Flex1,146.683
FLUX.2 ProNo clear lead1,151.499
LMArena Text to Image: PortraitsBlind preference from the same prompt, higher is better
FLUX.2 Flex1,144.533
FLUX.2 ProNo clear lead1,146.513
LMArena Text to Image: Text renderingBlind preference from the same prompt, higher is better
FLUX.2 FlexHigher score1,172.004
FLUX.2 Pro1,156.451
LMArena Image Editing: Multi-image editingBlind preference from the same prompt, higher is better
FLUX.2 Flex1,233.804
FLUX.2 ProNo clear lead1,238.237
LMArena Image Editing: OverallBlind preference from the same prompt, higher is better
FLUX.2 Flex1,225.217
FLUX.2 ProHigher score1,244.295

Key to the marks:better valuebetter, but not conclusivetie

Arena benchmark scores for FLUX.2 Flex and FLUX.2 Pro
BenchmarkFLUX.2 FlexFLUX.2 ProSource
Text to Image Arena
No clear lead1,224 Elo
Rank 19, 95% confidence interval: ±10, 5,047 ratings
1,208 Elo
Rank 31, 95% confidence interval: ±9, 8,915 ratings
Artificial AnalysisRetrieved 2026-08-26
Image Editing Arena
1,162 Elo
Rank 37, 95% confidence interval: ±7, 7,847 ratings
No clear lead1,170 Elo
Rank 33, 95% confidence interval: ±7, 11,529 ratings
Artificial AnalysisRetrieved 2026-08-26
LMArena Text to Image: 3D modeling
Higher score1,171.967
Rank 19, 95% confidence interval: ±7.03, 15,066 ratings
1,149.387
Rank 28, 95% confidence interval: ±6.29, 17,241 ratings
LMArenaRetrieved 2026-08-26
LMArena Text to Image: Art
1,155.954
Rank 28, 95% confidence interval: ±6.38, 21,779 ratings
No clear lead1,163.048
Rank 26, 95% confidence interval: ±5.76, 25,069 ratings
LMArenaRetrieved 2026-08-26
LMArena Text to Image: Cartoon
No clear lead1,162.335
Rank 26, 95% confidence interval: ±5.15, 55,850 ratings
1,161.019
Rank 27, 95% confidence interval: ±4.57, 66,010 ratings
LMArenaRetrieved 2026-08-26
LMArena Text to Image: Commercial design
Higher score1,173.137
Rank 21, 95% confidence interval: ±4.95, 55,246 ratings
1,156.46
Rank 26, 95% confidence interval: ±4.31, 64,392 ratings
LMArenaRetrieved 2026-08-26
LMArena Text to Image: Overall
No clear lead1,156.466
Rank 25, 95% confidence interval: ±3.42, 149,402 ratings
1,154.786
Rank 26, 95% confidence interval: ±3.06, 175,196 ratings
LMArenaRetrieved 2026-08-26
LMArena Text to Image: Photorealism
1,146.683
Rank 33, 95% confidence interval: ±4.87, 63,801 ratings
No clear lead1,151.499
Rank 30, 95% confidence interval: ±4.29, 74,515 ratings
LMArenaRetrieved 2026-08-26
LMArena Text to Image: Portraits
1,144.533
Rank 34, 95% confidence interval: ±5.82, 33,696 ratings
No clear lead1,146.513
Rank 31, 95% confidence interval: ±5.23, 39,262 ratings
LMArenaRetrieved 2026-08-26
LMArena Text to Image: Text rendering
Higher score1,172.004
Rank 22, 95% confidence interval: ±5.14, 49,969 ratings
1,156.451
Rank 27, 95% confidence interval: ±4.5, 59,326 ratings
LMArenaRetrieved 2026-08-26
LMArena Image Editing: Multi-image editing
1,233.804
Rank 22, 95% confidence interval: ±4.38, 125,392 ratings
No clear lead1,238.237
Rank 20, 95% confidence interval: ±3.8, 171,464 ratings
LMArenaRetrieved 2026-08-26
LMArena Image Editing: Overall
1,225.217
Rank 35, 95% confidence interval: ±3.17, 415,933 ratings
Higher score1,244.295
Rank 30, 95% confidence interval: ±2.8, 497,149 ratings
LMArenaRetrieved 2026-08-26

Key to the marks:better valuebetter, but not conclusivetie

Visual comparison

Sample images

Our images complement preference data, but do not replace it. The prompt, request count, and selection rule match. Provider resolution, quality tier, randomness, and prompt processing remain visible limitations, so this is not a fully controlled laboratory test.

Largely standardized comparison protocol. Both models receive the same archived prompt, exactly one request, and the first result counts. Files are normalized to 1,024 × 1,024 pixels without cropping. Provider resolution, randomness, quality tier, and prompt processing can still differ. These images are a practical visual test, not a reconstruction of the arena configuration.

Character and detail

Anatomy, clothing, and spatial consistency

FLUX.2 Pro, Character and detail
FLUX.2 Flex, Character and detail
FLUX.2 Flex
FLUX.2 Pro
Prompt and settings

Create a square cinematic full-body portrait of a fictional bicycle courier waiting under a transparent umbrella at a rainy tram stop in Hamburg at blue hour. She wears a mustard raincoat, navy trousers, red sneakers, a silver helmet, and carries a teal messenger bag. Keep both hands visible, render the bicycle correctly, use realistic wet-street reflections, and include no readable brand names.

FLUX.2 Flex. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID black-forest-labs/FLUX.2-flex, generated Aug 14, 2026, 12:25 PM. Source
FLUX.2 Pro. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID black-forest-labs/FLUX.2-pro, generated Aug 14, 2026, 12:30 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6

FLUX.2 Flex, image SHA 256: 43b43d5782192d7284de2b824dd1caaaa6b25032d22fc3f8565d438b137089f3

FLUX.2 Flex, request SHA 256: fe5b22589e6505017dc44f4729b1bb60b15820ba3673354d03a69c8b82831953

FLUX.2 Pro, image SHA 256: 9eec1a6900b6031703d2e797b93c2aba6c5f45b4807b560a0bf1e37eac9e20f2

FLUX.2 Pro, request SHA 256: 8c40a10f47e1407d26ab10f5c9d815e533bce798cf0adf5a9c1e6ddfc3f3584e

Infographic

Numbers, labels, and visual organization

FLUX.2 Pro, Infographic
FLUX.2 Flex, Infographic
FLUX.2 Flex
FLUX.2 Pro
Prompt and settings

Create a square German infographic titled SO FUNKTIONIERT PHOTOSYNTHESE. Show exactly four numbered steps in this order: 1 LICHT, 2 WASSER, 3 CO₂, 4 ZUCKER + SAUERSTOFF. Use a clean editorial science style with one plant cross-section, simple arrows, high contrast, legible labels, and no other text.

FLUX.2 Flex. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID black-forest-labs/FLUX.2-flex, generated Aug 14, 2026, 12:25 PM. Source
FLUX.2 Pro. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID black-forest-labs/FLUX.2-pro, generated Aug 14, 2026, 12:31 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f

FLUX.2 Flex, image SHA 256: 105f60cdeb71a27021ffff1ad3c0ad919df4e5c74ad83b4628fbd64a8d795a09

FLUX.2 Flex, request SHA 256: 11d4ec056332340dc822c82021ef10c6a6aa92de6e44dc931a90b7cbb6f14146

FLUX.2 Pro, image SHA 256: ea47f772cdfa26bf21528ae7e09d245eb7a3be7d3185af15cedd7d21acdfbb09

FLUX.2 Pro, request SHA 256: 9ef85d9cf32f0f9b974eeb0b389c1fbf1403f4e266af0ce98e0ca83da0fe23c1

Product photography

Materials, reflections, and fine details

FLUX.2 Pro, Product photography
FLUX.2 Flex, Product photography
FLUX.2 Flex
FLUX.2 Pro
Prompt and settings

Create a square premium product photograph of a brushed titanium wristwatch standing upright on dark green marble. The watch has a cream dial, thin black hands set to 10:10, twelve distinct hour markers, a realistic crown, and a dark brown leather strap. Soft window light from the left, controlled reflections, shallow depth of field, no text, no logo, no extra objects.

FLUX.2 Flex. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID black-forest-labs/FLUX.2-flex, generated Aug 14, 2026, 12:25 PM. Source
FLUX.2 Pro. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID black-forest-labs/FLUX.2-pro, generated Aug 14, 2026, 12:30 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3

FLUX.2 Flex, image SHA 256: 9fef39b1500635ddbf78bcb8d3d9a68463ce952aa1fab89d12f6efe023907de7

FLUX.2 Flex, request SHA 256: 1c864c5e5d7f1e7008f15466fd0786f801ae94b17939b4f10de9a61c27766a59

FLUX.2 Pro, image SHA 256: 4d9b922f59b329c5ac3532222c8e340e7fdcb1920ce6f03ad9299f25a6beec43

FLUX.2 Pro, request SHA 256: 96c65fc91b32da0a02970457fbf90c6928e1f7a5b45177fa3ef08f8bc32c9b82

Typography and layout

Legible text, hierarchy, and composition

FLUX.2 Pro, Typography and layout
FLUX.2 Flex, Typography and layout
FLUX.2 Flex
FLUX.2 Pro
Prompt and settings

Create a square editorial poster for an imaginary night train called MONDFALTER. Show the exact German headline MONDFALTER and the exact subline BERLIN NACH LISSABON. Use a restrained midnight-blue and warm-cream palette, one stylized moth, strong Swiss-grid typography, generous negative space, and no additional words or logos.

FLUX.2 Flex. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID black-forest-labs/FLUX.2-flex, generated Aug 14, 2026, 2:01 PM. Source
FLUX.2 Pro. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID black-forest-labs/FLUX.2-pro, generated Aug 14, 2026, 2:02 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419

FLUX.2 Flex, image SHA 256: 324f87bf898593446a400abb43bd00eee015fa0a1dc160db0f864402fc0b38af

FLUX.2 Flex, request SHA 256: a0aa716f2a302bdfa59820d2e2c27cc56f730e8e2e4d5b64223d29a6979e1475

FLUX.2 Pro, image SHA 256: 5a5d8ccd657d7522bc39fdec4b0aecf198b42c282a5aefde9461239dfe5c0396

FLUX.2 Pro, request SHA 256: 3e170f568fe4b6040423f0df065d9227f586d5da3d911a4251bcc368dfe333c0

How to read this comparison

An Elo score is not a verdict on creativity

A higher arena score means this specific configuration was preferred more often in blind comparisons.

Typography, character consistency, local execution, licensing, and price may matter more to your workload than overall visual appeal.

Prices cover 1,000 images at 1,024 × 1,024 pixels using settings documented by Artificial Analysis. Subscriptions and special rates are excluded.

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