GLM 5.3

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

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Prompt Caching
Fine-tuning

Details

Model IDzai-org/glm-5.3
Provider Novita AI
Creator Z.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 date
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

ModelContextMax outPricing
GLM 5.3 Flash1.0M131K$0.15$0.5
zai-org/glm-5.3-p1.0M131K$1.4$4.4
GLM 5.31.0M131K$1.4$4.4

API

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

GLM 5.3

zai-org/glm-5.3

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

Changes · 3 entries
zai-org/glm-5.3createca7a400Nov 2, 2026, 03:02 AM
zai-org/glm-5.3updatea6f5da0Sep 17, 2026, 06:39 AM
descriptionGLM-5.3 is Z.ai’s latest flagship model, delivering compr...→GLM-5.3 is a large-scale reasoning model from Z.ai, built...
zai-org/glm-5.3createe3d7dedAug 31, 2026, 04:13 AM