← Nils Fleischmann

Projects

Pruna AI

Applied Team

I was the first member to join the applied team, building Pruna's own models.

P-Models

One of the main engineers behind Pruna's own model family: P-Image, P-Image-Edit, P-Image-Ideogram, P-Video, P-Video-Avatar, P-Video-2-Pro and P-Video-2-Pro-Reference, with over 100M runs on Replicate.

P-H3-Image

Turned MiniMax-H3 into an efficient image model, with over 600K downloads so far. Integrated into diffusers and ComfyUI.

P-Q-Image-2.1

Trained 5- and 8-step LoRAs for Qwen-Image-2.1, with over 500K downloads on Hugging Face.

Research Team

I joined Pruna as part of the research team, where I did research on proprietary caching algorithms for diffusion models, helped build Pruna's first image models, and worked on the open-source pruna package.

Caching Research

Researched and built Pruna's proprietary caching methods. They power the official endpoints of BRIA 3.1, BRIA 3.2, BRIA FIBO and FLUX.2 [flex].

Wan Image

Built Pruna's first image models, Wan 2.1 Image and Wan 2.2 Image, from the Wan video models.

Open-Source Contributions

Added caching and quantization methods to the open-source pruna repository, and made its test suite about 2.4× faster.

Talks

Inference Optimization with Pruna AI

Munich NLP: how quantization, compilation, caching and distillation make models smaller and faster, with a hands-on demo.

Increasing the Efficiency of Image Generation with Diffusion Models

Hugging Face Computer Vision Hangout, June 2025: speeding up diffusion models with Pruna and diffusers.

Research

TreeGen: A Bayesian Generative Model for Hierarchies

NeurIPS 2025. Grew out of my master's thesis at TUM.

Kollovieh, Fleischmann, Guerranti, Charpentier, Günnemann · OpenReview · project page
Predictive Feature Caching for Training-free Acceleration of Molecular Geometry Generation

TMLR 2026. Brings diffusion caching to molecule generation.

Sommer, Fleischmann, Rachwan, Günnemann, Charpentier · OpenReview · arXiv

Hackathons & Side Projects

Amazon Review Miner

Finalist at LauzHack 2023: clusters the complaints in thousands of phone reviews with LLMs and embeddings, shown in an interactive dashboard.

Bundestakes

Makeathon 2025: an autonomous pipeline that turns hours-long Bundestag debates into 60-second shorts.

Madden NFL Predictions

Predicts NFL game outcomes from Madden video-game player ratings.