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Cloud Changelog
August 18, 2026 · Z.ai
GLM-5.3 released, with 50% coding gain over GLM-5.2 on Z.ai Code Bench
- Stronger Coding Capabilities: GLM-5.3 delivers a significant improvement in coding capabilities, achieving a 50% gain over GLM-5.2 on Z.ai Code Bench and reaching state-of-the-art (SOTA) performance among open-source models on public benchmarks, including Terminal Bench 3.0.
- Emergent Cybersecurity Capabilities: GLM-5.3 matches Mythos 5 in white-box code review and vulnerability discovery. In collaboration with multiple cybersecurity teams, it has been tested on real-world targets and has identified a total of 2,436 vulnerabilities, including 1,097 medium- and high-severity vulnerabilities.Learn more in our documentation.*
Latest Z.ai API changes
New model adds native visual capabilities, with 320B total and 18B active parameters
Model adds 1M lossless context, with stronger long-horizon task performance
GLM-5.1 released, working independently for up to 8 hours in a single run
GLM-5 released for complex system engineering and long-range Agent tasks
GLM-Image image generation model released, with improved text rendering