# GLM-5.3-FlashX [Canonical model page](https://headlessthrones.com/models/z-ai-glm-5-3-flashx) · [Model library](https://headlessthrones.com/models) Public catalog reference from Headless Thrones. Exact catalog ID: `z-ai-glm-5-3-flashx`. Catalog source-check date: 2026-10-23. This brief contains the public catalog answers and any catalog guide, not private drafts, historical editorial revisions or independently measured rankings. The canonical HTML page may also display separately published editorial. Current catalog answers ## What to know about GLM-5.3-FlashX AI-compiled from linked model documentation. This is a catalog reference, not an independent performance review. Catalog checked October 23, 2026. [Pricing](https://headlessthrones.com/models/z-ai-glm-5-3-flashx#model-answer-pricing) · [Exact model](https://headlessthrones.com/models/z-ai-glm-5-3-flashx#model-answer-identity) · [Access](https://headlessthrones.com/models/z-ai-glm-5-3-flashx#model-answer-access) · [Token limits](https://headlessthrones.com/models/z-ai-glm-5-3-flashx#model-answer-context) · [Inputs & outputs](https://headlessthrones.com/models/z-ai-glm-5-3-flashx#model-answer-modalities) · [Model details](https://headlessthrones.com/models/z-ai-glm-5-3-flashx#model-answer-research) ### How much does GLM-5.3-FlashX cost? The recorded token rates for GLM-5.3-FlashX are: - **Input:** US$0.37 per 1 million input tokens. [Source](https://docs.z.ai/guides/overview/pricing) - **Output:** US$1.25 per 1 million output tokens. [Source](https://docs.z.ai/guides/overview/pricing) **Rate conditions:** Direct Z.ai API list prices in USD per million input/output tokens. Cache storage and built-in tools are separate line items. [Source](https://docs.z.ai/guides/overview/pricing) **Illustrative arithmetic:** 10,000 input tokens plus 2,000 output tokens would cost US$0.0062 at those recorded rates. This assumes every token is billed at the displayed rate and excludes any cache, batch, tool, storage or tier adjustments; it is not a quote or measured usage. Check the source's pricing conditions before budgeting. A token rate does not state the price of an app subscription or the full cost of running downloaded weights. ### Which GLM-5.3-FlashX does this page describe? GLM-5.3-FlashX is a model record from **Z.ai** in the GLM family. [Source](https://docs.z.ai/guides/overview/pricing) The recorded model identifier or checkpoint is `GLM-5.3-FlashX`. Use that exact identifier when checking documentation or a provider listing. [Source](https://docs.z.ai/guides/overview/pricing) ### How can you access GLM-5.3-FlashX? The catalog documents **API** access for GLM-5.3-FlashX. [Source 1](https://docs.z.ai/guides/overview/pricing) · [Source 2](https://docs.z.ai/guides/vlm/glm-5.3-flash) As of the catalog check, this version was listed as available. [Source](https://docs.z.ai/guides/vlm/glm-5.3-flash) For API use, confirm the exact model identifier, your account and region, and the endpoint's current limits in the linked documentation. An API listing does not establish access through a consumer subscription. ### What are GLM-5.3-FlashX's context and output limits? The documented **context window is 1,000,000 tokens**. [Source](https://docs.z.ai/guides/vlm/glm-5.3-flash) A separate maximum-output value is not established in this record. The context or input figure should not be used as an output allowance. Context, input and output limits describe different constraints. Do not add the figures together to infer a larger window. Check the endpoint's accounting for conversation history, system instructions, tools, media and generated tokens; a documented maximum is not a guarantee of answer quality or a measured usable capacity. ### What can GLM-5.3-FlashX receive and generate? Documented inputs: **text, image, video, and file**. [Source](https://docs.z.ai/guides/vlm/glm-5.3-flash) Documented outputs: **text**. [Source](https://docs.z.ai/guides/vlm/glm-5.3-flash) Input support and output generation are separate capabilities. Reading an image does not establish image generation; a text output listing does not establish speech output. File sizes, formats and media limits depend on the documented implementation. ### What distinguishes GLM-5.3-FlashX? These details come from the linked publisher material for this model. Reported capabilities and training descriptions are publisher statements, not independent test results. **Maximum output**: The shared API page explicitly naming glm-5.3-flashx and glm-5.3-flashx-legal publishes a maximum output of 128K tokens. The shorthand is retained without assuming a 1,000- or 1,024-token multiplier. [Source](https://docs.z.ai/guides/vlm/glm-5.3-flash) **Reasoning and tools**: thinking.type supports enabled only, so thinking cannot be disabled. The page documents streaming, function calling, context caching and structured output. [Source](https://docs.z.ai/guides/vlm/glm-5.3-flash) **Plan availability**: The model page says FlashX is not yet available on the GLM Coding Plan even though it is listed for the model API. [Source](https://docs.z.ai/guides/vlm/glm-5.3-flash) **Exact API pricing row**: The exact GLM-5.3-FlashX row quotes 0.37 USD per million input tokens and 1.25 USD per million output tokens. Cache storage and built-in tools have separate line items. [Source](https://docs.z.ai/guides/overview/pricing) **Catalog qualifications:** Public hosted model listing; product-specific endpoint limits can differ from separately downloadable weights.Official maximum-output label is 128K; exact integer token ceiling unverified and left null. [Source 1](https://docs.z.ai/guides/overview/pricing) · [Source 2](https://docs.z.ai/guides/vlm/glm-5.3-flash) **Evidence still missing here:** knowledge and training-data cutoffs. Missing documentation is not evidence that a feature is unavailable. Headless Thrones has not independently benchmarked this model for this reference. Evaluate it on representative work before choosing it; these facts do not rank its accuracy, reliability, speed or suitability against another model. Keep the exact version in view ## Other GLM models from Z.ai. These are separate records in the same publisher family. A shared family name does not establish equal capabilities or interchangeable licenses. ### [GLM-4-32B-0414](https://headlessthrones.com/models/z-ai-glm-4-32b-0414) Open weights ### [GLM-4-32B-0414-128K](https://headlessthrones.com/models/z-ai-glm-4-32b-0414-128k) API ### [GLM-4-32B-Base-0414](https://headlessthrones.com/models/z-ai-glm-4-32b-base-0414) Open weights ### [glm-4-9b](https://headlessthrones.com/models/z-ai-glm-4-9b) Open weights ### [GLM-4-9B-0414](https://headlessthrones.com/models/z-ai-glm-4-9b-0414) Open weights ### [glm-4-9b-chat](https://headlessthrones.com/models/z-ai-glm-4-9b-chat) Open weights