GLM 5.1

mit

GLM-5.1 is Z.AI's latest flagship model, meticulously engineered for long-horizon autonomous tasks.

Context
205K
Max output
131K
Input price
$1.38/1M 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-5.1
Provider Novita AI
Creator Z.AI (Zhipu)
Familyglm-5.1
Licensemit
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weightYes
Parameters—
Architecture—
Context window205K 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
$1.38
Output
$4.4
Cache write
—
Cache read
—
Batch in
—
Batch out
—

API

GET/v1/models/novita/zai-org/glm-5.1

GLM 5.1

zai-org/glm-5.1

GLM-5.1 is Z.AI's latest flagship model, meticulously engineered for long-horizon autonomous tasks.

Changes · 4 entries
zai-org/glm-5.1createca7a400Nov 2, 2026, 03:02 AM
zai-org/glm-5.1update639b255Sep 1, 2026, 11:11 AM
nameGLM-5.1→GLM 5.1
zai-org/glm-5.1update80c574aJun 3, 2026, 07:05 AM
pricinginput$1.4→$1.38
zai-org/glm-5.1create08f0ffeMay 11, 2026, 08:27 AM