News

Ultra-fast Flow Upscaler Released for ComfyUI and Flux.2

The Flow Upscaler ComfyUI node set has been released for ultra-fast latent space upscaling in Flux.2 using a lightweight Rectified Flow model.

Compiled by Sergey KostenchukPublished 2026-06-15Updated 2026-06-15

2026-06-15 Coding HuggingFace

Expanded analysis for this story

Open the longform version with context, source trail, and what changed.

Read longform

🛠 Ultra-fast Flow Upscaler Released for ComfyUI and Flux.2

The Flow Upscaler node set allows for upscaling Flux.2 in the latent space in just a single denoising step. The 59M parameter model provides extreme speed: upscaling up to 1024x1024 takes only 8 ms on an RTX 5090.

🌍 This reduces the computational requirements for working with Flux.2 and brings us closer to the era of real-time content generation.

👤 ComfyUI users can instantly obtain ultra-high-resolution images (up to 8K).

Source 1: https://github.com/tensorforger/comfyui-flow-upscaler Source 2: https://huggingface.co/TensorForger/FlowUpscaler

Sources