Minimax releases open-weight h3-image model capable of generating 4k images in under 10 seconds

MiniMax officially unveiled and released the weights for its H3-Image model on November 10, 2026. This image generation model, derived from H3, supports text-to-image generation, image referencing, and image editing capabilities. The model is notable for its ability to produce high-resolution images of 4096 x 4096 pixels, equating to approximately 16 megapixels (4K), in just ten seconds. MiniMax stated that this performance represents a five-fold speed improvement compared to mainstream models of similar caliber. Beyond speed, H3-Image emphasizes superior visual quality, offering rich detail and a high degree of realism that moves beyond typical AI artifacts. The company credits these advancements to substantial work in the post-training pipeline, including data refinement, reinforcement learning, step compression, PE, and deployment optimization. Furthermore, for the first week following the release, MiniMax is offering a 50% discount on official pricing for generation requests at 16MP resolution or higher.