Z.ai: GLM Flash Latest

GLM Flash Latest is a text generation model from Z.ai, published under the model id ~z-ai/glm-flash-latest. The name reflects how the endpoint behaves: it always redirects to the latest model in the GLM Flash family, so a request made today and a request made later may be served by different underlying versions as Z.ai updates the family. If you want the newest GLM Flash behaviour without tracking version numbers yourself, this alias is the intended way to get it.

The model accepts text, images and video as input, and it produces text as output. Its context window is 1,048,576 tokens, with a maximum output of 943,718 tokens. That combination of a very large input window and a very large output allowance means you can send long documents, transcripts or media alongside your instructions and still leave substantial room for the model's reply. Because images and video are accepted on the input side, prompts can mix written material with visual material in a single request.

Those capabilities point to a fairly specific set of uses. Long-context work is the obvious fit: summarising or extracting structured information from lengthy reports, codebases, logs or book collections that would not fit in a smaller window. The multimodal input supports tasks such as describing or reasoning about images and video clips, for example turning footage or screenshots into written summaries, captions or structured notes. The large output budget also suits generation tasks where the answer itself is long, such as drafting documents or producing detailed analyses rather than short replies.

You call the model through api14's OpenAI-compatible API using the model id "~z-ai/glm-flash-latest". Because the interface follows the OpenAI chat completions shape, existing OpenAI client libraries and code generally work with only the base URL and model id changed. The model supports a broad set of request parameters: temperature, top_p, top_k, min_p, frequency_penalty, presence_penalty, repetition_penalty, max_tokens, stop, seed, logit_bias, logprobs and top_logprobs. It also supports response_format and structured_outputs for constrained output, tools, tool_choice and parallel_tool_calls for function calling, and the reasoning controls reasoning, reasoning_effort and include_reasoning.

One practical consideration is the alias behaviour: since the endpoint redirects to the latest GLM Flash model, the exact underlying model can change over time, which is convenient for staying current but less suitable if you need a frozen, reproducible version for regression testing. The model is text-only on the output side, so tasks requiring generated images, audio or other non-text output fall outside its scope. Within text generation, though, the combination of a million-token input window, multimodal input and a large output allowance covers a wide range of developer workloads.