FLUX.1 Kontext: Flow Matching for In-Context Image Generation and Editing in Latent Space

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Main Authors: Labs, Black Forest, Batifol, Stephen, Blattmann, Andreas, Boesel, Frederic, Consul, Saksham, Diagne, Cyril, Dockhorn, Tim, English, Jack, English, Zion, Esser, Patrick, Kulal, Sumith, Lacey, Kyle, Levi, Yam, Li, Cheng, Lorenz, Dominik, Müller, Jonas, Podell, Dustin, Rombach, Robin, Saini, Harry, Sauer, Axel, Smith, Luke
Format: Preprint
Published: 2025
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author Labs, Black Forest
Batifol, Stephen
Blattmann, Andreas
Boesel, Frederic
Consul, Saksham
Diagne, Cyril
Dockhorn, Tim
English, Jack
English, Zion
Esser, Patrick
Kulal, Sumith
Lacey, Kyle
Levi, Yam
Li, Cheng
Lorenz, Dominik
Müller, Jonas
Podell, Dustin
Rombach, Robin
Saini, Harry
Sauer, Axel
Smith, Luke
author_facet Labs, Black Forest
Batifol, Stephen
Blattmann, Andreas
Boesel, Frederic
Consul, Saksham
Diagne, Cyril
Dockhorn, Tim
English, Jack
English, Zion
Esser, Patrick
Kulal, Sumith
Lacey, Kyle
Levi, Yam
Li, Cheng
Lorenz, Dominik
Müller, Jonas
Podell, Dustin
Rombach, Robin
Saini, Harry
Sauer, Axel
Smith, Luke
contents We present evaluation results for FLUX.1 Kontext, a generative flow matching model that unifies image generation and editing. The model generates novel output views by incorporating semantic context from text and image inputs. Using a simple sequence concatenation approach, FLUX.1 Kontext handles both local editing and generative in-context tasks within a single unified architecture. Compared to current editing models that exhibit degradation in character consistency and stability across multiple turns, we observe that FLUX.1 Kontext improved preservation of objects and characters, leading to greater robustness in iterative workflows. The model achieves competitive performance with current state-of-the-art systems while delivering significantly faster generation times, enabling interactive applications and rapid prototyping workflows. To validate these improvements, we introduce KontextBench, a comprehensive benchmark with 1026 image-prompt pairs covering five task categories: local editing, global editing, character reference, style reference and text editing. Detailed evaluations show the superior performance of FLUX.1 Kontext in terms of both single-turn quality and multi-turn consistency, setting new standards for unified image processing models.
format Preprint
id arxiv_https___arxiv_org_abs_2506_15742
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle FLUX.1 Kontext: Flow Matching for In-Context Image Generation and Editing in Latent Space
Labs, Black Forest
Batifol, Stephen
Blattmann, Andreas
Boesel, Frederic
Consul, Saksham
Diagne, Cyril
Dockhorn, Tim
English, Jack
English, Zion
Esser, Patrick
Kulal, Sumith
Lacey, Kyle
Levi, Yam
Li, Cheng
Lorenz, Dominik
Müller, Jonas
Podell, Dustin
Rombach, Robin
Saini, Harry
Sauer, Axel
Smith, Luke
Graphics
We present evaluation results for FLUX.1 Kontext, a generative flow matching model that unifies image generation and editing. The model generates novel output views by incorporating semantic context from text and image inputs. Using a simple sequence concatenation approach, FLUX.1 Kontext handles both local editing and generative in-context tasks within a single unified architecture. Compared to current editing models that exhibit degradation in character consistency and stability across multiple turns, we observe that FLUX.1 Kontext improved preservation of objects and characters, leading to greater robustness in iterative workflows. The model achieves competitive performance with current state-of-the-art systems while delivering significantly faster generation times, enabling interactive applications and rapid prototyping workflows. To validate these improvements, we introduce KontextBench, a comprehensive benchmark with 1026 image-prompt pairs covering five task categories: local editing, global editing, character reference, style reference and text editing. Detailed evaluations show the superior performance of FLUX.1 Kontext in terms of both single-turn quality and multi-turn consistency, setting new standards for unified image processing models.
title FLUX.1 Kontext: Flow Matching for In-Context Image Generation and Editing in Latent Space
topic Graphics
url https://arxiv.org/abs/2506.15742