GLM-5.1 Model Overview: Features, Capabilities & Use Cases
Blog post from Deepinfra
GLM-5.1, developed by Z.AI and released under the MIT license, is a next-generation Mixture-of-Experts model featuring 754 billion parameters and designed to excel in long-horizon autonomous tasks. Unlike its predecessor, GLM-5, it maintains performance across extended workloads by continuously improving through iterative cycles of planning, execution, and optimization. It has demonstrated significant results, such as autonomously building a Linux desktop environment and enhancing database query throughput. While it excels in agentic engineering tasks, its performance in pure reasoning benchmarks lags behind competitors like GPT-5.4 and Gemini 3.1 Pro. GLM-5.1 is accessible via DeepInfra's OpenAI-compatible API and offers usage-based pricing, with options for self-hosting requiring substantial hardware. Its open-weight and MIT licensing make it a strong candidate for developers focusing on sustained, complex coding workflows.
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