MoonshotAI: Kimi K3.1 Pro vs Xiaomi: MiMo-V2.6-Pro-UltraSpeed
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-24.
| MoonshotAI: Kimi K3.1 Pro | Xiaomi: MiMo-V2.6-Pro-UltraSpeed | |
|---|---|---|
| Vendor | moonshotai | xiaomi |
| Quality Score | 100 | 100 |
| Benchmark Score | 95.1 | - |
| Input Price | $2.00/M | $4.35/M |
| Output Price | $10.00/M | $8.70/M |
| Context Window | 1,048,576 | 1,048,576 |
| 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, Kimi K3.1 Pro costs $4.50 and MiMo-V2.6-Pro-UltraSpeed costs $6.52, so Kimi K3.1 Pro is about 1.4 times cheaper for the same work.
Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.
Only MiMo-V2.6-Pro-UltraSpeed offers audio input.
Across the 20 tasks where they differ, Kimi K3.1 Pro scores higher on 20 (SQL Generation, Code Review, Code Completion and others).
Kimi K3.1 Pro was released in October 2026 and MiMo-V2.6-Pro-UltraSpeed in September 2026.
Pick Kimi K3.1 Pro if you need lower cost or the stronger all-round task scores; pick MiMo-V2.6-Pro-UltraSpeed if you need 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 | Xiaomi: MiMo-V2.6-Pro-UltraSpeed |
|---|---|---|
| SQL Generation | 143 | 132 |
| Code Review | 149 | 132 |
| Code Completion | 119 | 117 |
| Code Refactoring | 150 | 136 |
| Bug Fixing | 153 | 136 |
| Unit Test Generation | 134 | 124 |
| Code Documentation | 137 | 129 |
| Regex Writing | 126 | 117 |
| CI/CD Pipelines | 130 | 120 |
| Frontend Component Design | 132 | 122 |
| Data Analysis | 137 | 124 |
| CSV / Spreadsheet Cleanup | 136 | 132 |
| ETL Scripting | 140 | 128 |
| JSON Extraction | 121 | 121 |
| Bulk Data Labeling | 118 | 118 |
| OCR / Document Parsing | 135 | 131 |
| Table Extraction from PDFs | 135 | 131 |
| Long-Document Summarization | 151 | 136 |
| Short-Form Summarization | 118 | 113 |
| Blog Post Writing | 131 | 120 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →