ChatGPT-5 has been praised as OpenAI’s most “human-sounding” model yet, with sharper reasoning and smoother writing. But how well does it actually perform in business communication? In this article, I test ChatGPT-5 against Writing in Blue Ink’s PCA framework (purpose, clarity, and authenticity). The results reveal where AI can strengthen your writing, and where only the human touch can carry the message.

AI tools can make workplace messages look polished, but a new study shows they may also weaken authenticity and trust. At Writing in Blue Ink, we believe strong business communication needs more than polish. It must be grounded in purpose, clarity, and authenticity.

Want to keep using AI without losing your voice? This article shares practical ways to personalize, clarify, and humanize your writing, even when using generative AI or templates. Through these tips, you can ensure that your writing sounds like you.

Finding your authentic voice is about writing in a way that’s clear, honest, and unmistakably you. It’s not about being clever or perfectly polished.

This article offers real-world strategies to help you reconnect with your natural voice, unlearn corporate stiffness, and write in a way that builds trust. Whether you’re drafting emails, reports, or content for your brand, your voice will always be your edge.