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GLM-5.3: The Open-Weights Model That Got Scary Good at Coding and Cybersecurity Overnight

Z.ai just announced GLM-5.3, and it's one of the most dramatic post-training improvements we've seen in an AI model. Using the exact same base model as GLM-5.2, GLM-5.3 achieves a 50% improvement on…

  • GLM-5.3, open-weights AI model, excels in coding and cybersecurity
  • Model achieves 50% boost on coding benchmarks, outperforms state-of-the-art
  • Vulnerability discovery data enhances cybersecurity reasoning skills

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