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.

Plain language helps you write business content that's clear, confident, and easy to act on. Learn what it is, why it matters, and how to use it to improve emails, reports, proposals, and everyday communication.

Struggling to make your writing clear without sounding robotic or too brief? This guide offers 10 actionable strategies to help you write with clarity and confidence, without sacrificing brevity. Learn how to tighten sentences, cut filler, avoid ambiguity, and structure your ideas so they land the first time. Perfect for professionals, emerging leaders, and anyone who writes at work.

Clarity and brevity are both essential to effective business writing, but they’re not the same thing. When one is overemphasized, your message can become confusing or incomplete. In this article, we explore the difference between clarity and brevity in professional communication, why balancing them matters, and how you can avoid common writing mistakes. Whether you're writing emails, reports, or client updates, understanding how to write clearly and concisely can save time and build trust with your audience.