GLM 5.3

Name: GLM 5.3
Author: Novita AI

mit

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks.

Context

1.0M

Max output

131K

Input price

$1.4/1M tokens

Output price

$4.4/1M tokens

Capabilities

Show unsupported (1)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Prompt Caching

Fine-tuning

Details

Model IDzai-org/glm-5.3

ProviderNovita AI

CreatorZ.AI (Zhipu)

Familyglm-5.3

Licensemit

Statusactive

Typechat

Input modalitiestext

Output modalitiestext

Open weightYes

Parameters—

Architecture—

Context window1.0M tokens

Max input—

Max output131K tokens

Reasoning tokens—

Knowledge cutoff—

Release date2026-08-19

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Endpoints

Chat CompletionsPOST

Generate chat responses with messageshttps://api.novita.ai/v3/openai/v1/chat/completions

Pricing

Input

$1.4

Output

$4.4

Cache write

—

Cache read

—

Batch in

—

Batch out

—

Family Comparison: glm-5.3

Model	Caps	Perf	Speed	Context	Max out	Pricing
GLM 5.3 Flash	RTJJMSPCF	—	—	1.0M	131K	$0.15$0.5
zai-org/glm-5.3-p	RTJJMS	—	—	1.0M	131K	$1.4$4.4
GLM 5.3	RTJJMSPCF	—	—	1.0M	131K	$1.4$4.4

API

GET/v1/models/novita/zai-org/glm-5.3