Chinese AI company Zhipu claims its new model is a better bug-finder than Anthropic, OpenAI

ASIA IN BRIEF Chinese company Zhipu last week launched a new AI model called GLM-5.3 that it claims has bug-finding powers that match those possessed by American models.

The company’s announcement includes benchmark data that finds GLM-5.3 beats Fable 5 and GPT-5.6 Sol on the CyberGym benchmark, a test of a model’s ability to solve real-world cybersecurity challenges.

“As we scaled post-training, cyber capability developed faster than we expected. GLM-5.3 is state of the art on CyberGym for vulnerability discovery, and its gains are largest further up the exploitation chain,” the company wrote, adding that the model “did not simply become better at identifying isolated flaws: it began to reason across multiple stages of exploitation, forming coherent plans for complete exploitation chains.”

The company said it has worked with Chinese companies to test the model on real-world codebases, and found 2,436 vulnerabilities across 269 projects, including 1,097 medium-to-high severity issues.

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