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Enterprise AI Analysis of "ChatGPT as speechwriter for the French presidents"

Authors: Dominique Labbé, Cyril Labbé, Jacques Savoy

OwnYourAI Summary: This pivotal study provides a forensic analysis of the stylistic patterns inherent in Large Language Models (LLMs) like ChatGPT. By comparing AI-generated presidential speeches against their human-written counterparts, the researchers uncover a distinct "digital fingerprint" of AI-generated text. Key findings show that while LLMs can convincingly mimic a given style, they exhibit measurable biases: an overuse of nouns and standardized sentence structures, and an underuse of dynamic verbs and complex grammatical forms. For enterprises, this research is not just academic; it's a practical guide to understanding the limitations of off-the-shelf AI and a roadmap for developing custom, fine-tuned models that can truly capture a unique and effective brand voice. It highlights the critical need for expert intervention to move beyond generic outputs to create sophisticated, authentic, and high-impact AI-driven communications.

Executive Summary: The AI Writer's Tell-Tale Heart

The research by Labbé, Labbé, and Savoy serves as a crucial benchmark for any organization integrating generative AI into its content strategy. It reveals that beneath a plausible surface, AI-generated text has quantifiable stylistic habits. Understanding these habits is the first step toward mastering AI for enterprise use.

Key Findings for Business Leaders:

  • Stylistic Predictability: Standard LLMs default to a "safe," noun-heavy style with uniform sentence lengths. This can make content feel flat, generic, and lacking in persuasive power, a major risk for marketing and leadership messaging.
  • Grammatical Simplification: AI tends to avoid complex verb tenses and subordinate clauses. This "dumbing down" of language can undermine perceptions of expertise and authority.
  • Vocabulary Bias: The model over-relies on certain words (like "challenge" or "future") and struggles with words that have multiple grammatical roles (homographs), leading to repetitive and sometimes awkward phrasing.
  • The "Good Imitator" Paradox: While having a default style, ChatGPT can closely mimic a provided text sample, making it difficult for basic plagiarism tools to detect. This has profound implications for both brand consistency (a pro) and vulnerability to sophisticated misinformation (a con).

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The 'Digital Fingerprint': Deconstructing AI Writing Style

The study's core value lies in its meticulous breakdown of linguistic components. By examining the building blocks of languageParts-of-Speech (POS)the researchers revealed a fundamental difference in how humans and AI construct sentences. The AI favors a world of static objects (nouns), while humans prefer a world of dynamic actions (verbs).

Enterprise Implications of Stylistic Bias

These statistical differences are not merely academic. They translate directly into how your audience perceives your content:

  • Overuse of Nouns: Leads to passive, declarative text. It describes a situation rather than driving an action. For a sales page or a call-to-action, this is a critical weakness.
  • Underuse of Verbs & Adverbs: Creates a lack of dynamism and nuance. The rich, descriptive language that builds trust and conveys emotion is often lost.
  • Overuse of Possessives ("our," "your"): While seeming personal, overuse can feel forced and repetitive, a common trait in generic marketing copy.

OwnYourAI Solution: Our custom model development process begins with a deep stylistic analysis of your best-performing content. We fine-tune the AI not just on keywords, but on the very grammatical structure that defines your brand's unique voice, ensuring your AI-generated content is as compelling as your human-written content.

Beyond Words: Sentence Structure and Rhythm

A writer's style is defined as much by rhythm and flow as by word choice. The research uncovered one of the most significant tells of AI-generated text: its unnatural regularity in sentence length. Natural human writing has varietyshort, punchy sentences mixed with longer, more descriptive ones. AI, by contrast, gravitates towards a standardized, "average" length.

Comparison of Sentence Length Distribution

The chart below visualizes the core finding from the paper's Figure 1. The solid line (Presidents) shows a typical natural language pattern: a peak at shorter sentences with a long tail of more complex ones. The dotted line (ChatGPT) is clustered tightly around the middle, avoiding both very short and very long sentences. This creates a monotonous rhythm.

Sentence Length Statistics: Natural vs. AI

This table reconstructs the key data from the paper's Table 10, highlighting the statistical differences in sentence composition. Note the much smaller standard deviation and inter-decile range for ChatGPT, confirming its tendency toward uniformity.

Why Sentence Variety Matters for Business

Imagine a speech or a blog post where every sentence is roughly 20 words long. It becomes predictable and fails to hold the reader's attention. This uniformity is a major red flag for sophisticated readers and can instantly signal that the content is machine-generated, eroding trust. A dynamic brand voice requires a dynamic sentence structure to emphasize key points and guide the reader's experience.

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Enterprise Roadmap: From Generic Output to Custom Genius

The insights from this paper provide a clear path for enterprises to move beyond basic AI tools. The goal is to evolve from a user of a generic service to the owner of a custom-trained, strategic asset. Here is the OwnYourAI roadmap to achieve this.

Interactive Tools for Your AI Strategy

Apply the concepts from this analysis to your own business context with these interactive tools.

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Test Your Knowledge: Spot the AI

Based on the paper's findings, can you identify the key characteristics of AI-generated text? Take this short quiz to find out.

Conclusion: The Future is Custom-Trained AI

The research by Labbé, Labbé, and Savoy is a landmark paper that moves the conversation about generative AI from "can it write?" to "how does it write?". It proves that while base models are powerful, they are not a one-size-fits-all solution for enterprises that value a unique brand identity and effective communication.

The stylistic "tells" identifiedthe preference for nouns, the avoidance of grammatical complexity, the monotonous sentence rhythmare not permanent flaws but rather characteristics of an untrained model. The path to overcoming these limitations is through custom fine-tuning and strategic implementation.

By investing in a custom AI solution, you are not just automating content creation; you are encoding your brand's unique DNA into a scalable, intelligent system. This is the key to maintaining authenticity, building trust, and creating a sustainable competitive advantage in the age of AI.

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