AIGallery tool is an AI Gallery that allows users to generate images using various models, samplers, post-processors, and guidance options. Users can select from a variety of models such as k_lmsk_heunk_eulerk_euler_ak_dpm_2k_dpm_2_ak_dpm_fastk_dpm_adaptivek_dpmpp_2mk_dpmpp_2s_ak_dpmpp_sde13051251271 and more. Users can also save presets, load history, and reset the generation. The tool also offers options for batch size, steps, width, and height.