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Z.ai: GLM 5V Turbo vs OpenAI: GPT-5.3-Codex

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-04-29.

Z.ai: GLM 5V Turbo OpenAI: GPT-5.3-Codex
Vendorz-aiopenai
Quality Score100100
Input Price$1.20/M$1.75/M
Output Price$4.00/M$14.00/M
Context Window202,752400,000
Max Output131,072128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--

Who wins by task?

TaskZ.ai: GLM 5V TurboOpenAI: GPT-5.3-Codex
SQL Generation 129 132
Code Review 124 132
Code Completion 115 116
Code Refactoring 124 136
Bug Fixing 128 136
Unit Test Generation 120 124
Code Documentation 123 128
Regex Writing 119 116
CI/CD Pipelines 116 120
CSV / Spreadsheet Cleanup 125 132
ETL Scripting 120 128
JSON Extraction 123 120
Bulk Data Labeling 120 117
OCR / Document Parsing 127 131
Table Extraction from PDFs 127 131
Long-Document Summarization 125 136
Short-Form Summarization 115 112
Blog Post Writing 117 120

Scores reflect capability match + benchmark data + pricing for each task. Methodology →

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