Axel Sauer
Axel Sauer is a researcher whose work spans autonomous-driving vision and generative image synthesis. He studied for a PhD with Andreas Geiger in Tübingen's Autonomous Vision Group from 2020 to 2023, coauthored an urban-navigation paper in 2018, Projected GANs in 2021 and StyleGAN-T in 2023, and worked as a research scientist at Stability AI from 2023 to 2024 on fast image generation. In 2024, he coauthored Adversarial Diffusion Distillation and a rectified-flow transformer paper that received an ICML Best Paper award, and co-founded Black Forest Labs, whose launch included FLUX.1. As of October 2026, he is a co-founder and research scientist at Black Forest Labs and a managing director of BFL GmbH.
- Now at
- Black Forest Labs
Timeline
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2018
Autonomous driving in cities
In 2018, he coauthors Conditional Affordance Learning for Driving in Urban Environments, which maps video into intermediate representations for navigating complex urban settings.
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2020–2023
PhD work and Projected GANs
From 2020 to 2023, he studies for a PhD with Andreas Geiger in Tübingen's Autonomous Vision Group, focusing on scaling generative adversarial networks. In 2021, he coauthors Projected GANs, whose feature-space method matches previous best FID scores up to 40 times faster.
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2023
StyleGAN-T for text-to-image
In 2023, he coauthors StyleGAN-T, a GAN for large-scale text-to-image synthesis that improves on previous GANs and distilled diffusion models in sample quality and speed.
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2023–2024
Fast image generation at Stability AI
After his PhD, he works at Stability AI on fast image generation; Dealroom lists him as a research scientist there from 2023 to 2024.
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2024
Adversarial diffusion distillation
At ECCV 2024, he coauthors Adversarial Diffusion Distillation, which samples foundational image models in one to four steps while maintaining high image quality.
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2024
A Best Paper at ICML
In 2024, he coauthors Scaling Rectified Flow Transformers for High-Resolution Image Synthesis. The transformer uses separate weights for text and image modalities and lets information flow in both directions; ICML lists the paper as a Best Paper.
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August 2024
Co-founding Black Forest Labs
In August 2024, he co-founds Black Forest Labs, whose launch includes FLUX.1, a family of text-to-image models. The founding team includes researchers with experience at Stability AI.
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As of October 2026
Research at Black Forest Labs
As of October 2026, he is a co-founder and research scientist at Black Forest Labs; BFL GmbH lists him as a managing director.
Career
- Since 2024Black Forest LabsCo-founder, Research Scientist
Education
- 2023University of TübingenPhD
Sources and credits
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- Conditional Affordance Learning for Driving in Urban Environments
- Projected GANs Converge Faster
- Axel Sauer - Tübingen AI Center
- StyleGAN-T: Unlocking the Power of GANs for Fast Large-Scale Text-to-Image Synthesis
- Axel Sauer | Dealroom
- Adversarial Diffusion Distillation
- Axel Sauer
- Scaling Rectified Flow Transformers for High-Resolution Image Synthesis
- ICML 2024 Awards
- Black Forest Labs: Image editing via AI prompt | heise online
- Black Forest Labs, nouvel acteur européen de l'IA générative, lance FLUX-1, une famille de modèles text-to-image
- Imprint (Impressum) | Black Forest Labs
