zai

Zai: GLM 5.3

z-ai/GLM-5.3
Create account & add credits
Context

1M

Input

text

Output

text

Tool calling

Supported

About this model

GLM-5.3 is Z.ai's advanced Mixture-of-Experts model, building upon the GLM-5.2 base architecture with significantly scaled post-training. It is designed specifically for complex coding, long-horizon tasks, and autonomous agent workflows. The model sets a new state-of-the-art for open models in agentic coding and demonstrates strong emergent cybersecurity capabilities, excelling in vulnerability discovery and exploitation chaining.

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Setup guidesComparisonsIndustry use casesPlaygroundNews and evidence
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Input modalities

text

Accepted as model input

Providers

Available routing options for this model through OneInfer.

zai
Available

Input tokens

$1.400 / 1M tokens

Output tokens

$4.400 / 1M tokens

Routing

OneInfer optimized

Pricing

Current OneInfer pricing for this model.

UsagePrice
Input tokens$1.400 / 1M tokens
Output tokens$4.400 / 1M tokens
Cached input tokens$0.260 / 1M tokens

Performance

Published evaluation results associated with this model.

Coding

Terminal Bench 2.188.2
Terminal Bench 3.028.3
DeepSWE v1.166.9
NL2Repo58
FrontierSWE78.1
SWE-Marathon v1.142.5
PostTrainBench39.8

Cyber

CyberGym84.5
ExploitGym105
ExploitBench54.4

Agentic

Toolathlon Verified73
AutomationBench48.2
Agents' Last Exam28.5
HLE w/ Tools62.5
GDPval-AA v21769

API Guide

Refer Documentation
  1. 1

    Generate your access token

    Use your API key to generate the JWT access token required by the Models API.

  2. 2

    Add the JWT token

    Copy the generated JWT token and replace JWT_TOKEN in the example below.

  3. 3

    Check your credits

    If your balance is too low, before calling the model.

  4. 4

    Run the API example

    Choose your preferred language, copy the example, and send your first model request.

    curl https://api.oneinfer.ai/v1/ula/chat/completions \
  -H "Authorization: Bearer $JWT_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai/GLM-5.3",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'