If you use Google’s AI chatbot, Gemini (former Bard) to produce content, be careful. PlagiarismCheck.org has detected plagiarism in its texts.
Our experts conducted a study of Gemini’s texts for plagiarism and discovered a significant concern. When the Bard AI model was released, it generated from 5% to 45% of plagiarism. The recent tests show that Gemini, an improved version, generates output that contains less plagiarised content. However, the AI model is still incapable of creating original writing, and its output can entail plagiarism accusations.

How we tested Gemini. We analyzed about 35 texts generated for the following prompts, and plagiarised content above 5% is found in 25 texts. The PlagiarismCheck.org tool determined the percentage of similarity overall, flagged 🔴 identical matches, and 🟠 changed text. We also added clickable links to the sources from which the text was plagiarized.
The settings for the analysis were the same as for plagiarism detection in standard human-written texts. Based on the results of the investigation conducted by PlagiarismCheck.org, we can talk about outright plagiarism in Gemini-generated texts, from paraphrased parts to the completely copied extracts.
“We tested Google’s AI model and found it generated to 45% plagiarism simply by paraphrasing someone else’s authored content. AI models should generate unique text and should not allow plagiarism. The consumer does not expect to receive it”, – says Language Analyst Natalie Voropai.
PlagiarismCheck.org experts add that perhaps the percentage of plagiarism also depends on the complexity of the request. Sometimes AI simply compiles widely available information on a topic. If data is lacking, the AI generates a higher-level text with a lower probability of plagiarism.
If you want to ensure that the AI-generated content does not contain plagiarism, use the accurate checking tools by PlagiarismCheck. You will receive a report with similarity percentages and clickable links to resources whose text has been copied or paraphrased. Reliable similarity analysis algorithms allow us to check plagiarism and provide guaranteed results for hundreds of institutes and businesses over eight years.
Gemini has been noticed for plagiarism before. Previously, accusations of plagiarism were limited to the lack of accurate references to sources and the attribution of research authorship in general. The Editor-in-Chief of Tom’s Hardware, Avram Piltch reported how then-Bard was caught plagiarizing the results of their article. Then the chatbot admitted its mistake.

“By plagiarizing, the bot denies its users the opportunity to get the full story while also denying experienced writers and publishers the credit – and clicks – they deserve […] If it wants to be seen as truly helpful, Google absolutely needs to add citations”, – Avram Piltch says.
Also, The Wall Street Journal noted that Google’s AI routinely gives answers without citing sources.
Despite these issues and growing concerns around AI-generated content reliability, Gemini still offers certain advantages in terms of ecosystem integration and productivity features. According to G2, “Gemini Pro integrates more seamlessly with Google Workspace (Docs, Sheets, Gmail), making it a better fit if your team is already in the Google ecosystem.”
Online publishers are concerned that AI will continue to use their content without proper accreditation, which could reduce traffic to their sites and ad revenue. Online platform owners are also unhappy that their content was used to train chatbots without any compensation.
After the Bard (Gemini) error cost 100 billion dollars due to the factual unreliability of information, Google spokesperson said about the “importance of a rigorous testing process”.
“We’ll combine external feedback with our own internal testing to make sure Bard’s [Gemini] responses meet a high bar for quality, safety, and roundedness in real-world information,” – they said back in December 2022.
With the development of AI technologies and raising awareness regarding AI plagiarism, AI models like ChatGPT started providing the sources of information on user‘s request. However, they tend to be inaccurate, mentioning made-up or incorrect sources, worsening the problem, as improper citing also counts as plagiarism.
What is AI plagiarism
With all the amazing capabilities AI technologies offer, the temptation to cut corners in learning and writing has grown tremendously. However, new challenges arise with the new potentials: text-generating chatbot development brings new risks of violating the rules, so a whole new notion of AI plagiarism has emerged.
AI plagiarism is something the writing chatbots do while composing the texts. The thing is, the AI model does not create the texts but compilates them based on a vast number of existing resources. That is why the result can’t be called “original” per se. What is worse, you are often unaware of what resources have been used. Even though modern AI models do provide sources of information they use, they still make mistakes, mentioning made up or irrelevant resources. Therefore, thorough fact-check and source attribution is a must.
All in all, the short answer is “no”: one cannot generate a text that will be genuinely unique and contain no plagiarism using AI tools. But how can we incorporate AI technologies and avoid copying?
Tips and tricks on how to avoid plagiarism using AI
- Use AI as an adviser, not a writing tool. Consulting Chat GPT or Google Gemini is an efficient way to find some facts rapidly. AI may even help to overcome writer’s block. Use these tools to empower your writing, not replace the writer.
- Conduct your research. AI processes the existing information, but only you can invoke a sparkle of creativity into the content piece. So, do your homework: study the sources and reflect on the ideas you get. You can ask Chat GPT for statistics or structure tips but not delegate the whole task.
- Fact-check everything. AI may be clever, but it relies on the information presented by humans. And humans do err. So, AI-generated texts can contain mistakes, both factological and stylistical or grammatical. Reread everything, double-check the numbers and facts in reputable sources, and don’t be shy to doubt machine writing – it is not the ultimate truth!
- Credit the sources. Provide proper attribution to all the ideas and facts you mention if they are not invented by you. Even if you used AI to answer your question, go the extra mile and look for the sources where these numbers or details were taken – and don’t forget to attribute them! You can and should attribute AI sources as well.
- Scan for plagiarism. The originality checking tool will find similarities in case your text is not unique. This way, you will see the parts you need to improve and feel confident publishing your work or submitting the assignment to the professor.
Last but not least. Don’t forget that tools to detect whether your text was composed by a machine or a human exist! So, your teacher, recruiter, or editor may find out you have involved AI, and even if you contributed to the writing, they may suspect the whole paper was written by Chat GPT, which is not always appreciated. So, consult AI carefully and moderately, and better trust your authentic ideas and explore them!
Plagiarism is a threat not only to academic integrity but to the reliability of texts in general. Protect your business and minimize risks: use PlagiarismCheck.org to ensure only high-quality, verified content with our AI writing checker.