GLM 5.3

Name: GLM 5.3
Author: OpenCode Zen

mit

GLM-5.3 is Z.ai's latest flagship model, delivering comprehensive advancements in complex software engineering and agent capabilities. It uses the same base model as GLM-5.2, with all improvements driven by post-training. Compared with GLM-5.2, it delivers significantly stronger performance in complex programming and long-horizon tasks:

Context

128K

Max output

128K

Input price

$1.4/1M tokens

Output price

$4.4/1M tokens

Capabilities

vision

tool call

structured output

reasoning

json mode

streaming

fine tuning

batch

Details

Model IDglm-5.3

ProviderOpenCode Zen

CreatorZ.AI (Zhipu)

Familyglm-5.3

Licensemit

Parameters—

Statusactive

Input modalitiestext

Output modalitiestext

Architecture—

Knowledge cutoff—

Training data cutoff—

Release date—

Deprecation date—

Typechat

Reasoning tokens—

Max input—

Open weightYes

Prompt cachingSupported

Sourceofficial

Last updated2026-09-06

Pricing

Input

$1.4

Output

$4.4

Cache write

—

Cache read

$0.26

Batch in

—

Batch out

—

Price across providers

Provider	Input	Output	Since launch
OpenCode Zencheapest	$1.4	$4.4	—
Z.AI (Zhipu)cheapest	$1.4	$4.4	—

Family Comparison: glm-5.3

Model	Caps	Perf	Speed	Context	Max out	Pricing
GLM 5.3 Flash	RVTS	—	—	128K	128K	$0.15$0.5
GLM 5.3	RVTS	—	—	128K	128K	$1.4$4.4

API

GET/v1/models/opencode/glm-5.3