GLM-5.3-FlashX

Name: GLM-5.3-FlashX
Author: Z.AI (Zhipu)

mit320B / 18B

GLM-5.3-Flash/GLM-5.3-FlashX is the first native multimodal model in the GLM-5 series, delivering stronger intelligence than GLM-5.2 at an exceptionally low cost.

Context

Max output

128K

Input price

$0.37/1M tokens

Output price

$1.25/1M tokens

Capabilities

Show unsupported (1)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Prompt Caching

Fine-tuning

Details

ProviderZ.AI (Zhipu)

Creatorzai

Familyglm-5.3

Licensemit

Status—

Typechat

Input modalitiestext, image, video

Output modalitiestext

Open weightYes

Parameters320B / 18B

Architecture—

Context window1M tokens

Max input—

Max output128K tokens

Reasoning tokens—

Knowledge cutoff—

Release date—

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Input

$0.37

Output

$1.25

Cache write

—

Cache read

$0.08

Batch in

—

Batch out

—

Family Comparison: glm-5.3

Model	Caps	Perf	Speed	Context	Max out	Pricing
GLM-5.3-FLASH	RTJJMSPCF	—	—	1M	128K	$0.15$0.5
GLM-5.3-FlashX-Legal	RTJJMSPCF	—	—	1M	128K	$0.37$1.25
GLM-5.3-FlashX	RTJJMSPCF	—	—	1M	128K	$0.37$1.25
GLM-5.3	RTJJMSPCF	—	—	1M	128K	$1.4$4.4

API

GET/v1/models/zai/glm-5.3-flashx