head-to-head
Z.ai: GLM 5.3 Flash vs Qwen: Qwen3.8 27B (free)
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.
| Z.ai: GLM 5.3 Flash | Qwen: Qwen3.8 27B (free) | |
|---|---|---|
| Vendor | z-ai | qwen |
| Quality Score | 100 | 100 |
| Benchmark Score | 70.6 | 55.6 |
| Input Price | $0.15/M | Free |
| Output Price | $0.50/M | Free |
| Context Window | 1,310,720 | 262,144 |
| Max Output | 943,718 | 235,929 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 69.0 | 55.6 |
Who wins by task?
| Task | Z.ai: GLM 5.3 Flash | Qwen: Qwen3.8 27B (free) |
|---|---|---|
| SQL Generation | 142 | 137 |
| Code Review | 145 | 137 |
| Code Completion | 133 | 130 |
| Code Refactoring | 147 | 136 |
| Bug Fixing | 149 | 141 |
| Unit Test Generation | 132 | 127 |
| Code Documentation | 138 | 131 |
| Regex Writing | 126 | 125 |
| CI/CD Pipelines | 128 | 123 |
| Frontend Component Design | 130 | 128 |
| Data Analysis | 134 | 132 |
| CSV / Spreadsheet Cleanup | 136 | 130 |
| ETL Scripting | 137 | 130 |
| JSON Extraction | 131 | 132 |
| Bulk Data Labeling | 129 | 130 |
| OCR / Document Parsing | 134 | 131 |
| Table Extraction from PDFs | 134 | 131 |
| Long-Document Summarization | 149 | 138 |
| Short-Form Summarization | 127 | 126 |
| Blog Post Writing | 130 | 125 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →
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