ByteDance Seed: Seed-2.0-Mini vs MoonshotAI: Kimi K2.5
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| ByteDance Seed: Seed-2.0-Mini | MoonshotAI: Kimi K2.5 | |
|---|---|---|
| Vendor | bytedance-seed | moonshotai |
| Quality Score | 100 | 100 |
| Benchmark Score | - | 64.3 |
| Input Price | $0.10/M | $0.53/M |
| Output Price | $0.40/M | $3.33/M |
| Context Window | 262,144 | 262,144 |
| Max Output | 131,072 | 65,536 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | - | 62.9 |
| eqbench | - | 55.2 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Seed-2.0-Mini costs $0.20 and Kimi K2.5 costs $1.36, so Seed-2.0-Mini is about 6.8 times cheaper for the same work.
Both read up to 262,144 tokens at once, roughly 393 pages of text.
Only Seed-2.0-Mini offers video input.
Across the 20 tasks where they differ, Seed-2.0-Mini scores higher on 2 (JSON Extraction, Bulk Data Labeling), Kimi K2.5 on 18 (SQL Generation, Code Review, Code Completion and others).
Seed-2.0-Mini was released in February 2026 and Kimi K2.5 in January 2026.
Pick Seed-2.0-Mini if you need lower cost or video input; pick Kimi K2.5 if you need 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 | ByteDance Seed: Seed-2.0-Mini | MoonshotAI: Kimi K2.5 |
|---|---|---|
| SQL Generation | 131 | 142 |
| Code Review | 126 | 145 |
| Code Completion | 129 | 131 |
| Code Refactoring | 127 | 145 |
| Bug Fixing | 130 | 149 |
| Unit Test Generation | 121 | 132 |
| Code Documentation | 126 | 135 |
| Regex Writing | 119 | 127 |
| CI/CD Pipelines | 117 | 128 |
| Frontend Component Design | 122 | 131 |
| Data Analysis | 124 | 136 |
| CSV / Spreadsheet Cleanup | 128 | 133 |
| ETL Scripting | 122 | 136 |
| JSON Extraction | 131 | 131 |
| Bulk Data Labeling | 129 | 128 |
| OCR / Document Parsing | 128 | 133 |
| Table Extraction from PDFs | 128 | 133 |
| Long-Document Summarization | 129 | 146 |
| Short-Form Summarization | 123 | 127 |
| Blog Post Writing | 119 | 130 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →