You're looking for AIgenerated content that's free to use、Here are some options:

Text Generation:

1、AI Writer: Offers a free plan with 1,000 words per month、You can use it to generate articles, blog posts, and more.
2、Content Blossom: Provides a free AI writer tool that can generate up to 1,000 words per day.
3、WordLift: Offers a free version with limited features, but still allows you to generate decent content.

Image Generation:

1、Deep Dream Generator: A free online tool that uses AI to generate surreal and dreamlike images.
2、Prisma: A popular app that uses AI to transform your photos into works of art in the style of famous artists、(Free, with inapp purchases)
3、Stable Diffusion: A free and opensource AI model that generates images from text prompts.

Music Generation:

1、Amper Music: Offers a free version with limited features, allowing you to create up to 5 minutes of music per month.
2、AIVA: A free AI music composition tool that allows you to create and download music tracks.

Chatbots and Conversational AI:

1、Dialogflow: A Googleowned platform that offers a free plan for building conversational interfaces.
2、Rasa: An opensource conversational AI platform that allows you to build contextual chatbots.

Other Tools:

1、Lumen5: A free AIpowered video creation platform that allows you to create animated videos.
2、InVideo: Offers a free plan with limited features, allowing you to create professionallooking videos using AI.

Keep in mind that while these tools are free, they often come with limitations, such as:

* Limited usage or output
* Watermarks or branding
* Lower quality or resolution
* Limited customization options

If you're looking for more advanced features or higher quality output, you may need to upgrade to a paid plan or subscription.