Hacker News AI Headline Tracking: Analysis of 'Days Since AI'

AI mentions account for approximately 14% of new Hacker News submissions

The "Days Since AI" project provides a real-time counter of how often "AI" appears in the headlines of new story submissions on Hacker News. Based on data from August 2026, approximately 14.2% of new headlines mention AI, with an average of one AI-related post every 10 minutes.

Headline Statistics and Trends

Data collected over a 400-day period shows that AI mentions in headlines remain a significant portion of the site's content stream. Key metrics include:

  • Daily Volume: On a peak day, 152 AI headlines were submitted (August 25, 2026), while the quietest day saw a lower volume of mentions.
  • Daily Percentage: The percentage of AI headlines fluctuates between 10.6% and 14.9%.
  • Temporal Patterns: There is a slight increase in AI-related submissions on weekdays (13.6%) compared to weekends (12.4%), suggesting that AI content is more frequently posted by users during working hours.

Methodology and Constraints

The project uses the Algolia API for title matching with prefix matching disabled. The system tracks the standalone word "AI" (case-insensitive).

  • Strict Counting: The tool counts "AI-powered" but does not count "OpenAI" as a standalone mention of "AI".
  • Underestimation: Because the tool relies on a strict keyword match, the actual percentage of AI-related content is likely higher, as many users do not use the specific label "AI" in their headlines.

Community Perspectives on AI Content

Users on Hacker News discussed the limitations of keyword tracking and the broader implications of AI-generated content on the platform.

Distinguishing Topic from Generation

Several users noted that tracking the topic of an article is fundamentally different from tracking AI-generated content.

The topic of an article being AI and an "AI-Generated Article" are two completely different things.

Commenters suggested expanding the project to track AI-generated comments, the percentage of posts linking to AI-generated articles, or using embeddings to categorize content into broader thematic buckets.

The Ubiquity of AI

Some users argued that AI has become so integrated into technical discourse that tracking it as a separate category is becoming less meaningful. One user noted that "Every technical topic involves AI now," suggesting that the tool's findings reflect the general saturation of the AI field across all technical domains.

Sources

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