Overclocking Electrostatic Generative Models

Electrostatic generative models such as PFGM++ have recently emerged as a powerful framework, achieving competitive performance in image synthesis. PFGM++ operates in an extended data space with auxiliary dimensionality D, recovering the diffusion model framework as D → ∞, while yielding superior empirical results for finite D. Like diffusion models, PFGM++ relies on expensive ODE simulations to generate samples, making it computationally costly. To address this, we propose Inverse Poisson Flow Matching (IPFM), a principled distillation framework that accelerates electrostatic generative models across all values of D. Our IPFM reformulates distillation as an inverse problem: learning a generator whose induced electrostatic field matches that of the teacher. We derive a tractable training objective for this problem and show that, as D → ∞, our IPFM closely recovers Score Identity Distillation (SiD), a recent method for distilling diffusion models. Empirically, our IPFM produces distilled generators that achieve near-teacher or even superior sample quality using only a few function evaluations. Moreover, we find that onestep generator distillation converges faster at finite D than in the D → ∞ diffusion limit, aligning with prior evidence that finite-D PFGM++ models offer more favorable optimization and sampling behavior. Project repository: https: //github.com/daniil-shlenskii/ipfm.