The AI Behavior Index is the research arm of OneChat AI. This page focuses on the specific use case of AI for blog post and article writing — long-form content for company blogs, marketing publications, news articles, and similar content marketing applications. It draws primarily on the Siege Media / Affinco content marketer survey, Ahrefs' 2025 content cost analysis (one of the largest empirical studies in this category), and case study research from AllAboutAI.
One important caveat: the cost figures from Ahrefs ($131 AI-assisted vs $611 human-only) are averages across many industries and content types. Highly specialized technical content, premium brand content, and long-form journalism continue to command much higher human-only costs that AI cannot meaningfully reduce without sacrificing quality. The 4.7× cost efficiency ratio holds for the broad category of "blog posts" but should not be taken as a uniform rule across all content. The hybrid SEO finding (2.4× better than pure AI) is from one detailed case study — broader research suggests the directional finding holds, but exact magnitudes vary. Data is refreshed when major studies publish. If you have a study to suggest or notice an error, contact us at research@aibehaviorindex.org.