AI has become so advance and has made significant boost in daily work. There are hundreds of website that claim they are generating different content for you using ai. Some of them are in beta version, but there are some amazing website, which provides outstanding ai tools and the another amazing thing is, they are free. Some of them are listed below.
Large Language Models
Chat GPT is a chatbot, which response text answer of prompt. It is a generative model, so it generate unique answer by understanding the concept. In latest version, you can also upload file and write prompt. It also has a integrated GPT models with different app. A good example is CapCut VideoGPT.
Gemini is also a chatbot like chat GPT, but it response the answer in a professional way with the references. If you are a university student, then this can be very useful. Although it only have image upload in prompt, where as Chat GPT provides file upload.
Microsoft Copilot is an AI-powered assistant integrated into Microsoft 365 apps. It enhances user experience by leveraging advanced machine learning models to assist with tasks such as writing, data analysis, image generation and project management. If you login
Image Generation
Midjourney generates images from natural language descriptions, it is similar to DALL-E and Stable Diffusion. you need to join discord server of mid journey to use it.
DALL-E 2/ DALL-E 3 is a image generation model from OpenAi, it generates high quality images from prompt. so you can easily create images using prompt in chatGPT Plus.
Leonardo AI can also generates multiple high quality image of different aspect ratio from prompt. The provide 150 fast token per day for free and then you need to pay.
Video Generation
Invideo AI can create high quality video from a text for different social media such as YouTube, instagram reels and TikTok. The amazing part is it compiles the clips to make story alive.
It is one of the best short video clip generating tool, it also provides different other tools such as Text to video, image to video, video enhancer and magic brush.
Immersity AI Converts your 2D Image into a 3D motion, adding an extra dimension with depth by movement. 
They provide 200 coins and it requires 30 coin per download.