AI for content marketing

I am looking for AI tools to create content. I have specific use cases:

1. I frequently create PowerPoint presentation slides and use Copilot for PowerPoint presentation generation. However, I find the generated content too generic and would like to automatically generate useful infographics. I currently use (link unavailable) and have a Canva Pro subscription.
2. I want to record my voice and automatically generate videos with subtitles. Additionally, I would like the tool to correct grammar errors in real-time, supporting both English and Chinese spoken languages.
3. I would like to explore common toolsets for content generation and creation.
4. I am unfamiliar with AI models like Claude and O4, and usually opt for the fastest option. I know that combining ChatGPT and Copilot can produce optimal results, but I would like to know the applicable prompt areas."