head-to-head
OpenAI: GPT-6 Sol 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 | Z.ai: GLM 5.3 Flash | |
|---|---|---|
| Vendor | openai | z-ai |
| Quality Score | 100 | 100 |
| Benchmark Score | 81.2 | 70.6 |
| Input Price | $2.00/M | $0.15/M |
| Output Price | $10.00/M | $0.50/M |
| Context Window | 1,050,000 | 1,310,720 |
| Max Output | 128,000 | 943,718 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 78.4 | 69.0 |
Who wins by task?
| Task | OpenAI: GPT-6 Sol | Z.ai: GLM 5.3 Flash |
|---|---|---|
| Code Review | 146 | 145 |
| Code Completion | 119 | 133 |
| Code Refactoring | 148 | 147 |
| Bug Fixing | 150 | 149 |
| Unit Test Generation | 133 | 132 |
| Code Documentation | 136 | 138 |
| Regex Writing | 125 | 126 |
| CI/CD Pipelines | 129 | 128 |
| Frontend Component Design | 131 | 130 |
| Data Analysis | 135 | 134 |
| CSV / Spreadsheet Cleanup | 135 | 136 |
| ETL Scripting | 139 | 137 |
| JSON Extraction | 121 | 131 |
| Bulk Data Labeling | 118 | 129 |
| OCR / Document Parsing | 134 | 134 |
| Table Extraction from PDFs | 134 | 134 |
| Long-Document Summarization | 149 | 149 |
| Short-Form Summarization | 117 | 127 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →
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