AI Reasoning Models Compared May 2026: o3 vs Claude Extended Thinking vs Gemini Deep Think vs DeepSeek-R1
An honest, benchmark-driven comparison of the four reasoning models that matter in May…
May 28, 2026
14 min
Fatima Al-Hassan is a pen name for our security and privacy editorial desk. Posts under this byline are written and reviewed by contributors with backgrounds in application security, smart contract auditing, threat modeling, and privacy-preserving cryptography. The desk specializes in attacker-perspective explainers — how exploits actually work, what real recoveries look like, and which defenses survive contact with sophisticated adversaries. We coordinate disclosures responsibly and publish nothing that helps active attackers.