GLM-5.3-Flash

GLM-5.3-Flash for visual coding and professional documents

Published

GLM-5.3-Flash accepts text, images, video and files with text output, a 1M context and 128K maximum output, through the model API and GLM Coding Plan.

starsCapabilities

visibilityVision understandingcodeFunction callingdata_objectStructured output

paymentsContext and pricing

Context limit1,000,000

Max output131,072

Input price$0.15/ 1M tokens

Output price$0.5/ 1M tokens

Cached input price$0.03/ 1M tokens

descriptionOverview

Overview

GLM-5.3-Flash uses model ID glm-5.3-flash with text, image, video and file input and text output. Official limits are 1M context and 128K maximum output, targeting visual coding, document analysis and tool workflows.

Boundaries

Function calling, streaming, caching and structured output are supported. thinking.type only accepts enabled; reasoning cannot be disabled. The model API and GLM Coding Plan are available. FlashX is a separate faster variant; its 200 tokens/s rating is not assigned to standard Flash. Release date and pricing are not confirmed here.

lightbulbUse cases

Visual coding and UI analysis
Image/video Q&A
Professional document analysis
Long-context tool workflows

thumb_upStrengths

Native multimodal input and text output
1M context and 128K maximum output
Tool calling, caching and structured output

infoLimitations

Reasoning cannot be disabled
Standard Flash does not inherit FlashX speed ratings
Tool execution requires application integration
Release date and pricing are unconfirmed

linkReferences

open_in_newhttps://docs.bigmodel.cn/cn/guide/models/vlm/glm-5.3-flash