Z.ai · Official-source model record
GLM-5.3-FlashX
GLM · Version GLM-5.3-FlashX
Publisher-sourced inventory. Specifications come from official documentation and model cards. “Not documented” means we have no verified value. This inventory is separate from our editorial reviews.
Coverage & sources ↗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.
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
- Output: US$1.25 per 1 million output tokens. Source
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
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
The recorded model identifier or checkpoint is GLM-5.3-FlashX. Use that exact identifier when checking documentation or a provider listing. Source
How can you access GLM-5.3-FlashX?
The catalog documents API access for GLM-5.3-FlashX. Source 1 · Source 2
As of the catalog check, this version was listed as available. Source
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
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
Documented outputs: text. Source
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
- 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
- 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
- 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
Keep the exact version in view
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These are separate records in the same publisher family. A shared family name does not establish equal capabilities or interchangeable licenses.
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The documented record
Specifications, with their sources.
A missing value remains unknown. Input limits, output limits and the total context window are separate measurements.
- Publisher
- Z.aiSource ↗
- Family
- GLMSource ↗
- Version
- GLM-5.3-FlashXSource ↗
- Availability
- AvailableSource ↗
- Access
- APISource 1 ↗Source 2 ↗
- Inputs
- Text · Image · Video · FileSource ↗
- Outputs
- TextSource ↗
- Context window
- 1,000,000 tokensSource ↗
- Maximum input
- Not documented
- Maximum output
- Not documented
- Knowledge cutoff
- Not documented
- Training-data cutoff
- Not documented
- Training completed
- Not documented
- Release date
- Not documented
- License
- Not documented
- Input price / 1M tokens
- $0.37Source ↗
- Output price / 1M tokens
- $1.25Source ↗
Read this with the numbers.
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.
Direct Z.ai API list prices in USD per million input/output tokens. Cache storage and built-in tools are separate line items.
Model identifiers and aliases 1
GLM-5.3-FlashX
Follow the evidence