Unverified50% confidenceOpinionExact time
GLM-5.3 approaches Claude Mythos Preview on offensive tasks by a margin of only 2 percentage points, indicating that the gap between open-source models and top closed-source models in the cybersecurity capability dimension is narrowing rapidly.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/29/2026
First Seen
Valid until: 12/28/2026
Sources
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