Zerply
Content Strategy

Information Gain

Definition

Information gain in SEO refers to the unique, novel information a piece of content provides beyond what already exists in competing content on the same topic. Content with high information gain-through original research, unique data, first-hand experience, expert synthesis, or novel framing-is more likely to earn backlinks, AI citations, and ranking priority. It is increasingly used as a content quality benchmark for both search optimization and AI retrieval eligibility.

Why It Matters

Search engines and AI systems are moving toward rewarding original contributions over content that merely reorganizes existing information. As AI itself can synthesize readily available information at scale, content that provides genuinely new information becomes the primary differentiator for both search rankings and AI citations. Information gain is the quality dimension that separates citable content from commoditized content.

How It Works

Information gain is assessed by comparing a piece of content against competing content on the same topic, identifying claims, data points, or insights that appear only in the target content, and evaluating the value those unique elements provide. Research suggests search algorithms use semantic similarity comparisons to identify near-duplicate content and may use information gain as a quality signal to prioritize novel content.

Use Cases

  • Conducting original user surveys to create proprietary data that no competitor can replicate
  • Adding expert interview content to topic guides to provide first-hand insights beyond published research
  • Documenting first-hand testing results for product categories where all existing content is opinion-based
  • Creating comprehensive analysis of public datasets from an angle not covered by existing content
  • Synthesizing cross-industry research into novel frameworks that provide unique strategic perspective

Best Practices

  • Before creating any content, research existing coverage and explicitly identify what unique value your piece will add
  • Conduct original surveys, experiments, or analyses that produce proprietary data
  • Add expert interviews, first-hand testing, or case studies that only you can provide
  • Synthesize multiple existing sources into a novel framework or conclusion rather than summarizing each individually
  • Document your organization's unique process, experience, or perspective that cannot be found elsewhere
  • Use information gain as a pre-publication checklist: list 3–5 specific things your content provides that no existing source does

Frequently Asked Questions

Does information gain have to mean entirely new research? +
No. Information gain can come from original data, but also from unique synthesis, first-hand experience, novel framing, expert perspective, specific use-case application, or deeper coverage of an underexplored angle. The key is providing something a reader cannot find in any competing source-this doesn't require a research lab, just genuine original contribution.
Can AI-generated content have high information gain? +
Rarely without human input. AI generates content from existing knowledge patterns, making it inherently prone to low information gain when used without significant human expert enhancement. High-information-gain AI content requires humans to provide the novel data, experience, or insight that the AI then helps articulate-the information gain comes from the human contribution, not the AI.
Is information gain a documented Google ranking factor? +
Google hasn't explicitly named 'information gain' as a ranking factor using that terminology. However, Google's guidance on helpful content, originality, and unique insights aligns directly with the concept. Research by SEO practitioners and analysis of Google's quality evaluator guidelines strongly suggests information gain-related signals influence ranking.

Related Terms

Start tracking your brand's AI visibility with Zerply

Monitor where your brand appears in AI-generated answers across ChatGPT, Perplexity, Claude, and Google AI Overviews so you can measure and improve your presence.

No credit card required • Start in minutes