The advent of Artificial Intelligence (AI) technology has revolutionized numerous sectors, and content creation is not exempted. Nowadays, AI content generators reign supreme, being the go-to tools for content creators, copywriters, and marketers alike, aiming to create compelling copies swiftly. Let's dive into the world of AI content generators and present the twelve best ones you should consider:

1. OpenAI's GPT-3: Dominating the AI content generation sphere is OpenAI's GPT-3. This AI model is designed to understand and generate human-like text. It creates creative, coherent, context-sensitive content that can pass as high-quality human writing in most instances.

2. ChatGPT: Powered by OpenAI, ChatGPT is typically used for developing dynamic conversation models. It is often used to script interactive dialogs that sound natural and human-like, making it ideal for chatbot scripting and similar applications.

3. Kuki.ai: Kuki.ai is an AI chatbot platform featuring robust natural language processing capabilities. It can structure content from structured and unstructured data and is ideal for social media content and customer service responses.

4. Jasper from Jarvis.ai: Formerly known as Jarvis.ai, Jasper offers long-form assistant that's ideal for generating blog posts, scriptwriting, book writing, and more. It’s known for its user-friendly interface, top-quality generated content, and broad language support.

5. Copy.ai: Another excellent AI writing assistant specialising in automating copywriting tasks. With Copy.ai, you can generate product descriptions, ad copies, taglines, and more within seconds.

6. Writesonic: Initially focused on providing automated ad writing services, Writesonic has expanded its scope to include blogging, email copy, landing page copy, and more. It also has an AI blogging assistant to help develop and polish blog posts.

7. WordAI: WordAI is an excellent tool for content rephrasing. It understands the context of phrases and sentences and can rewrite content while preserving its original meaning.

8. Articoolo: Articoolo is excellent for generating short-form content quickly. It's perfect for creating articles, posts, and other content when you're crunched for time.

9. Quillbot: Quillbot is best known for its top-notch paraphrasing capabilities, ideal for rewriting blog posts, papers, and reports while maintaining the text's overall tone and context.

10. AI Writer: True to its name, AI Writer focuses on long-form content generation, including articles and blog posts. The AI uses keywords provided by users to generate initial drafts that can then be edited and polished.

11. Content Villain: This AI writing tool aims at creating high-quality, versatile content suitable for social media, ads, e-commerce, and more. Content Villain stands out with its engaging, user-friendly interface and versatile content generation options.

12. Zahara.ai: Zahara.ai is an innovative AI content generator gaining popularity in the content-creation domain. It uses advanced AI technology to provide users with quality content, making it easier to draft blog posts, ad copies, articles, and more. An impressive feature of Zahara.ai is its capability to generate content in different languages, catering to a global audience and opening new avenues for content creators internationally.

Selecting an AI content generator depends largely on your specific requirements, budget, and preference. Each tool comes with its unique strengths, whether it's blogging, ad generation, article writing, or customer service responses. By harnessing the power of these AI content generators, you can streamline your content creation process and focus more on strategic roles that can't be automated.

Feel free to explore, experiment, and eventually settle for the one that suits your needs the best. After all, AI content generation is here to make your life easier! Remember, the best AI tool for you is the one that helps you achieve your content creation goals effortlessly.