# MiniMax H3-Image

MiniMax released H3-Image, an open-weight image generation model built on H3 that supports text-to-image, reference-based generation and image editing, and can produce a 4096×4096 4K image in under 10 seconds, which MiniMax says is up to 5× the speed of mainstream alternatives. Previously, 4K output carried more cost than the common 1K or 2K sizes, which kept it out of everyday creative workflows. The speed comes from changes across the whole post-training pipeline, including data, reinforcement learning, sampling-step reduction, PE and deployment optimization, rather than from a single change.

MiniMax released H3-Image, an open-weight image generation model built on H3 that supports text-to-image, reference-based generation and image editing, and can produce a 4096×4096 4K image in under 10 seconds, which MiniMax says is up to 5× the speed of mainstream alternatives. Previously, 4K output carried more cost than the common 1K or 2K sizes, which kept it out of everyday creative workflows. The speed comes from changes across the whole post-training pipeline, including data, reinforcement learning, sampling-step reduction, PE and deployment optimization, rather than from a single change.