Z.ai: GLM Flash Latest vs Qwen: Qwen3.8 Flash
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-19.
| Z.ai: GLM Flash Latest | Qwen: Qwen3.8 Flash | |
|---|---|---|
| Vendor | ~z-ai | qwen |
| Quality Score | 100 | 100 |
| Input Price | $0.05/M | $0.15/M |
| Output Price | $0.20/M | $0.47/M |
| Context Window | 1,048,576 | 1,000,000 |
| Max Output | 943,718 | 131,072 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GLM Flash Latest costs $0.098 and Qwen3.8 Flash costs $0.27, so GLM Flash Latest is about 2.7 times cheaper for the same work.
Both take in a similar amount of text: 1,048,576 and 1,000,000 tokens, about 1,573 and 1,500 pages.
Across the 10 tasks where they differ, GLM Flash Latest scores higher on 10 (SQL Generation, Code Completion, Code Documentation and others).
Pick GLM Flash Latest if you need lower cost or the stronger all-round task scores.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | Z.ai: GLM Flash Latest | Qwen: Qwen3.8 Flash |
|---|---|---|
| SQL Generation | 134 | 133 |
| Code Completion | 132 | 131 |
| Code Documentation | 132 | 131 |
| Regex Writing | 120 | 119 |
| CSV / Spreadsheet Cleanup | 134 | 133 |
| JSON Extraction | 132 | 131 |
| Bulk Data Labeling | 129 | 129 |
| Long-Document Summarization | 138 | 137 |
| Short-Form Summarization | 124 | 123 |
| Blog Post Writing | 122 | 121 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →