BotCost.dev has launched a free tool helping website owners quantify the financial impact of AI bot traffic crawling their sites. With 38% of web traffic now non-human and mostly AI scrapers, the service analyzes server logs to reveal exactly how much bandwidth these unwanted visitors consume. The tool currently identifies 18 known AI fingerprints including GPTBot, ClaudeBot, and Bytespider, offering a clear picture of unauthorized AI access.

For a typical site with 50k monthly visitors, $180 monthly in bandwidth costs may stem from AI scrapers. BotCost processes logs in-browser with zero uploads and delivers results in seconds under 10ms latency. The service supports Nginx, Apache, Cloudflare, and Vercel log formats, providing immediate insights without requiring accounts or impacting real user performance.

Users upload their log files, and BotCost matches requests against known AI fingerprints to calculate actual bandwidth costs in dollars. The service then generates ready-to-paste WAF rules for Cloudflare, Nginx, Next.js, or robots.txt files to block unwanted bots. As AI bot traffic continues growing, Bandwidth costs remain a concrete concern for website operators looking to optimize resources and protect against unauthorized data scraping.