The Limitations of Flexi's Generative AI

CK-12’s Flexi 2.0 uses a myriad of AI technologies, including Large Language Models (LLMs) to help students learn. LLMs are a type of artificial intelligence that can process and generate human language. They are trained on large amounts of data. It can generate new text by predicting the word or phrase that is most likely to appear next in a sentence. 


LLMs have many useful applications. At CK-12, we use them to help you understand and learn a subject better and answer your questions on academic topics. In Flexi, all responses generated by LLMs are visually labeled as “AI-GENERATED”. Flexi can also generate explanations, definitions, and analogies to simplify certain concepts. These are valuable tools to improve your understanding of the key concepts in any subject.


While language models are improving by leaps and bounds, they are not perfect. They sometimes make mistakes. These errors may occur because of incorrect or biased training data or because, sometimes, the context of a conversation or text is not clear. Sometimes they have been known to generate inappropriate or off-topic responses. It is important for you to know their limitations and use them wisely to help your learning. 


Here are some key habits you should develop when interacting with Flexi:

  1. Ask clear and direct questions: Include all the information so that Flexi can understand which topic you are referring to without any ambiguities. Do not assume that Flexi knows what you are talking about. This will help ensure that you receive an accurate and helpful response.
  2. Cross-check Flexi’s answers: While Flexi will provide excellent answers to most of your questions, it is important to rely on multiple sources for your learning. Flexi provides a “View other sources” button which includes alternate answers from the CK-12 Library written by our Subject Matter Experts (SME). view sources with arrow.pngview other sources_2 with arrow.png
  3. Think critically: Like with any source of information, it is important to develop critical thinking abilities to evaluate the information provided. Ask yourself if the information provided makes sense logically. If you are not convinced, ask more questions and clarifications, or read up about the topic in one of the CK-12 FlexBooks.

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Flexi also learns and continuously improves from the occasional mistakes it makes. You can help this process by giving feedback by clicking on the thumbs-up or thumbs-down icons. We have a team of experts who are looking at your feedback to improve Flexi. 

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