GLM 5.3 TL5
GLM-5.3 is Z.ai's open-weight, text-only Mixture-of-Experts model for demanding software engineering and long-horizon agent workflows. Its 753B parameters activate around 40B per token, while sparse attention supports an up to 1M-token context window for large codebases. It gains its advances from scaled post-training on complex, multi-step tasks. It supports repository-level coding, vulnerability discovery, terminal-based agents, function calling, and automated workflows that require planning and recovery from errors. Reasoning remains enabled, with low, high, and max effort settings to balance task performance and token usage. Z.ai reports a 50% gain on its internal Code Bench, and independent testing by Artificial Analysis confirms improvements over GLM-5.2. The model is released under the GLM-5.3 License, which permits commercial use subject to conditions.
GLM 5.3 TL5
GLM-5.3 is Z.ai's open-weight, text-only Mixture-of-Experts model for demanding software engineering and long-horizon agent workflows. Its 753B parameters activate around 40B per token, while sparse attention supports an up to 1M-token context window for large codebases. It gains its advances from scaled post-training on complex, multi-step tasks. It supports repository-level coding, vulnerability discovery, terminal-based agents, function calling, and automated workflows that require planning and recovery from errors. Reasoning remains enabled, with low, high, and max effort settings to balance task performance and token usage. Z.ai reports a 50% gain on its internal Code Bench, and independent testing by Artificial Analysis confirms improvements over GLM-5.2. The model is released under the GLM-5.3 License, which permits commercial use subject to conditions.
