BREAKING
GLM-5.2 Rivals Claude Mythos on Bugs
IDOR Detection F1 Score
GLM-5.2
39
Opus 4.6
37
Opus 4.8/4.7
28
0
$
per true positive
0
B
total params
0
M
token context
GLM-5.2 vs Claude Mythos
GLM-5.2
Zhipu AI
●
Open weights, MIT license
●
Released June 16, 2026
●
Self-hosting and fine-tuning
Claude Mythos
Anthropic
●
Unreleased frontier model
●
Limited Project Glasswing access
●
Found thousands of zero-days
Coding Benchmark Scores
Terminal-Bench
81
Opus 4.8
85
SWE-bench Pro
62.1
One Task, Big Questions
AI NEWS BLITZ
An open-weight Chinese model is matching a top US frontier model at finding security bugs.