GLM-5Unclaimed

Z.ai API Platform gives developers access to the GLM family of language models through a single API. The site presents GLM-5.3 as its flagship model, built to combine reasoning, coding and agentic capabilities.

The API supports adjustable reasoning effort, function calling that connects models to external tools, and structured JSON output. It also handles vision input for images, video and files, streaming responses in real time, and web search for current information. Long context of up to 1M tokens and context caching are listed for workloads with large or repeated inputs.

The platform is aimed at development teams building products on top of large language models. The site shows several coding tools that use GLM models, including Crush, Factory, OpenCode and Cline, and the testimonials on the page describe the models' use in coding and multi-step workflows.

Developers can start building from the API documentation and quick start guide. A Coding Plan is also listed in the site navigation. Pricing is pay-as-you-go, with prepaid usage bundles offered at a discount. The page does not state specific per-token prices, so the exact cost of a given workload is not shown. Teams that need custom rate limits, on-premises or private cloud deployment, or hands-on help can contact the sales team for enterprise options.