You're looking for free AI resources! There are many options available、Here are some popular ones:

AI Models and APIs

1、TensorFlow: An opensource machine learning framework developed by Google.
2、OpenCV: A computer vision library with AI capabilities.
3、Hugging Face Transformers: A popular library for natural language processing (NLP) tasks.
4、Google Cloud AI Platform: Offers free tier with limited usage for machine learning and AI services.
5、Microsoft Azure Cognitive Services: Provides free tier with limited usage for various AI services like computer vision, NLP, and more.

AIpowered Tools and Platforms

1、Google Colab: A free, cloudbased platform for data science and machine learning.
2、Kaggle: A platform for data science competitions and hosting datasets, with free access to GPUs and TPUs.
3、Repl.it: A cloudbased coding environment that supports AI and machine learning development.
4、DeepAI: A platform that offers free AI model training and deployment.
5、Lobe: A userfriendly AI platform for building and deploying machine learning models.

AI Chatbots and Virtual Assistants

1、Dialogflow: A Googleowned platform for building conversational interfaces.
2、ManyChat: A popular platform for building chatbots for messaging platforms.
3、Rasa: An opensource conversational AI platform.

Other Resources

1、AI courses on Coursera, edX, and Udemy: Many free and paid courses on AI and machine learning.
2、AI research papers and journals: Websites like arXiv, ResearchGate, and Academia.edu provide access to research papers and journals.
3、Kaggle Datasets: A vast collection of public datasets for machine learning and AI projects.

These are just a few examples of the many free AI resources available、I hope you find something that suits your needs!