MoonshotAI: Kimi K3.1 Pro vs Qwen: Qwen3.8 Omni Flash
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-24.
| MoonshotAI: Kimi K3.1 Pro | Qwen: Qwen3.8 Omni Flash | |
|---|---|---|
| Vendor | moonshotai | qwen |
| Quality Score | 100 | 100 |
| Benchmark Score | 95.1 | - |
| Input Price | $2.00/M | $0.15/M |
| Output Price | $10.00/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 | - | ✓ |
| Benchmark Scores | ||
| ai_index | 90.9 | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Qwen3.8 Omni Flash costs $0.27 and Kimi K3.1 Pro costs $4.50, so Qwen3.8 Omni Flash is about 16.8 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.
Only Qwen3.8 Omni Flash offers audio input.
Across the 20 tasks where they differ, Kimi K3.1 Pro scores higher on 16 (SQL Generation, Code Review, Code Refactoring and others), Qwen3.8 Omni Flash on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others).
Kimi K3.1 Pro was released in October 2026 and Qwen3.8 Omni Flash in September 2026.
Pick Kimi K3.1 Pro if you need the stronger all-round task scores; pick Qwen3.8 Omni Flash if you need lower cost or audio input.
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 | MoonshotAI: Kimi K3.1 Pro | Qwen: Qwen3.8 Omni Flash |
|---|---|---|
| SQL Generation | 143 | 133 |
| Code Review | 149 | 132 |
| Code Completion | 119 | 131 |
| Code Refactoring | 150 | 136 |
| Bug Fixing | 153 | 136 |
| Unit Test Generation | 134 | 124 |
| Code Documentation | 137 | 131 |
| Regex Writing | 126 | 119 |
| CI/CD Pipelines | 130 | 120 |
| Frontend Component Design | 132 | 122 |
| Data Analysis | 137 | 124 |
| CSV / Spreadsheet Cleanup | 136 | 133 |
| ETL Scripting | 140 | 128 |
| JSON Extraction | 121 | 131 |
| Bulk Data Labeling | 118 | 129 |
| OCR / Document Parsing | 135 | 131 |
| Table Extraction from PDFs | 135 | 131 |
| Long-Document Summarization | 151 | 137 |
| Short-Form Summarization | 118 | 123 |
| Blog Post Writing | 131 | 121 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →