Tencent: Hy4 vs MoonshotAI: Kimi K3.1 Pro
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-04.
| Tencent: Hy4 | MoonshotAI: Kimi K3.1 Pro | |
|---|---|---|
| Vendor | tencent | moonshotai |
| Quality Score | 100 | 100 |
| Input Price | $0.42/M | $2.00/M |
| Output Price | $1.25/M | $10.00/M |
| Context Window | 1,048,576 | 1,048,576 |
| Max Output | 65,536 | 943,718 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Hy4 costs $0.73 and Kimi K3.1 Pro costs $4.50, so Hy4 is about 6.2 times cheaper for the same work.
Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.
Only Kimi K3.1 Pro offers video input.
Across the 10 tasks where they differ, Hy4 scores higher on 10 (SQL Generation, Code Completion, Code Documentation and others).
Hy4 was released in November 2026 and Kimi K3.1 Pro in October 2026.
Pick Hy4 if you need lower cost or the stronger all-round task scores; pick Kimi K3.1 Pro if you need video 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 | Tencent: Hy4 | MoonshotAI: Kimi K3.1 Pro |
|---|---|---|
| SQL Generation | 133 | 132 |
| Code Completion | 131 | 117 |
| Code Documentation | 131 | 129 |
| Regex Writing | 119 | 117 |
| CSV / Spreadsheet Cleanup | 133 | 132 |
| JSON Extraction | 131 | 121 |
| Bulk Data Labeling | 129 | 118 |
| Long-Document Summarization | 137 | 136 |
| Short-Form Summarization | 123 | 113 |
| Blog Post Writing | 121 | 120 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →