Leonardo is a strong option, offering high-quality visual assets at large scale with consistent speed and style. It's got built-in tools like AI Canvas for editing, 3D texture generation and fine-tuned models for different styles. It's a general-purpose tool, good for inspiration, graphic design and even product photography. It's got a free tier with daily token limits, and paid subscriptions add more features and faster generation.
Another option is getimg.ai. It's got a variety of tools for generating new images from text prompts, editing existing images and training your own custom AI models. Among its tools are Image to Video conversion, Real-Time AI Generator and ControlNet for guided generation. With high-resolution image generation and a variety of community-trained AI models, getimg.ai is good for architecture, character generation and art. It charges by the credits, so you can pay for what you need.
If you want a full suite of creative tools, Aitubo is worth a look. It's based on Stable Diffusion 3 (SD3) for photorealistic image generation, but it's also got tools for video generation, AI editing and high-resolution upscaling. It's also got more advanced tools like background removal and face swapping. The free and premium tiers are good for people who want to start small and graduate to more advanced tools, so it's good for game development, animation and design.