head-to-head

OpenAI: GPT-6 Sol (batch) vs Z.ai: GLM 5.3 Flash

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

OpenAI: GPT-6 Sol (batch) Z.ai: GLM 5.3 Flash
Vendoropenaiz-ai
Quality Score100100
Benchmark Score81.270.6
Input Price$1.00/M$0.15/M
Output Price$5.00/M$0.50/M
Context Window1,050,0001,310,720
Max Output128,000943,718
Tool Calling
Structured Output
Reasoning Mode
Vision
Audio--
Benchmark Scores
ai_index78.469.0

Who wins by task?

TaskOpenAI: GPT-6 Sol (batch)Z.ai: GLM 5.3 Flash
SQL Generation 142 142
Code Review 146 145
Code Completion 120 133
Code Refactoring 148 147
Bug Fixing 150 149
Unit Test Generation 133 132
Code Documentation 137 138
Regex Writing 126 126
CI/CD Pipelines 129 128
Frontend Component Design 131 130
Data Analysis 135 134
CSV / Spreadsheet Cleanup 136 136
ETL Scripting 139 137
JSON Extraction 122 131
Bulk Data Labeling 120 129
OCR / Document Parsing 134 134
Table Extraction from PDFs 134 134
Long-Document Summarization 149 149
Short-Form Summarization 118 127
Blog Post Writing 130 130

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

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