MoonshotAI: Kimi K3.1 Pro vs MiniMax: MiniMax M3.1 Flash
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-24.
| MoonshotAI: Kimi K3.1 Pro | MiniMax: MiniMax M3.1 Flash | |
|---|---|---|
| Vendor | moonshotai | minimax |
| Quality Score | 100 | 100 |
| Benchmark Score | 95.1 | 71.3 |
| Input Price | $2.00/M | $0.15/M |
| Output Price | $10.00/M | $0.60/M |
| Context Window | 1,048,576 | 1,048,576 |
| Max Output | 943,718 | 524,288 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 90.9 | 70.5 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, MiniMax M3.1 Flash costs $0.30 and Kimi K3.1 Pro costs $4.50, so MiniMax M3.1 Flash is about 15.0 times cheaper for the same work.
Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.
On our blended benchmark score Kimi K3.1 Pro leads 95.1 to 71.3.
Across the 20 tasks where they differ, Kimi K3.1 Pro scores higher on 13 (SQL Generation, Code Review, Code Refactoring and others), MiniMax M3.1 Flash on 7 (Code Completion, Code Documentation, Regex Writing and others).
Pick Kimi K3.1 Pro if you need benchmark performance; pick MiniMax M3.1 Flash if you need lower cost.
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 | MiniMax: MiniMax M3.1 Flash |
|---|---|---|
| SQL Generation | 143 | 142 |
| Code Review | 149 | 145 |
| Code Completion | 119 | 133 |
| Code Refactoring | 150 | 147 |
| Bug Fixing | 153 | 149 |
| Unit Test Generation | 134 | 132 |
| Code Documentation | 137 | 138 |
| Regex Writing | 126 | 126 |
| CI/CD Pipelines | 130 | 128 |
| Frontend Component Design | 132 | 130 |
| Data Analysis | 137 | 134 |
| CSV / Spreadsheet Cleanup | 136 | 136 |
| ETL Scripting | 140 | 137 |
| JSON Extraction | 121 | 131 |
| Bulk Data Labeling | 118 | 129 |
| OCR / Document Parsing | 135 | 134 |
| Table Extraction from PDFs | 135 | 134 |
| Long-Document Summarization | 151 | 149 |
| Short-Form Summarization | 118 | 127 |
| Blog Post Writing | 131 | 130 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →