Training AIs to Solve CAPTCHAs

· Bruce Schneier · Oct. 19, 2026, 11:34 a.m.
Summary
This blog post discusses a novel approach to solving visual CAPTCHAs using combined techniques from vision-language models and fine-tuned YOLOv8 detectors. The system adapts over time, improving its performance through interactions with the CAPTCHA challenges, reaching notable accuracy levels and emphasizing the importance of adaptability in AI systems. It also highlights the dynamism in overcoming CAPTCHA defenses, illustrating the ongoing arms race between CAPTCHA creators and solvers.
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