If you're looking for a Pika alternative, getimg.ai is definitely worth a look. It offers a full-fledged AI image creation and editing platform with tools to generate original images from text prompts, edit existing images, and train custom AI models. Notable features include an AI Generator for fast image generation, Image Editor for fine tuning, and API integration for automated image editing.
If you're interested in high resolution images, DreamStudio uses the large SDXL 1.0 model to generate realistic, detailed imagery based on prompts. It has features like upscaling, customizable styles, and the ability to specify negative prompts for more control over what's generated.
Another tool worth checking out is Aitubo, which offers a range of tools to generate high quality images and videos from text prompts or source media. It has advanced AI abilities like background removal, face swapping and upscaling to ultra-high resolution, and is geared for creative work like game development, animation and design.