Xiaomi: MiMo-V2.6-Pro-UltraSpeed vs ByteDance Seed: Seed 2.1 Turbo
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| Xiaomi: MiMo-V2.6-Pro-UltraSpeed | ByteDance Seed: Seed 2.1 Turbo | |
|---|---|---|
| Vendor | xiaomi | bytedance-seed |
| Quality Score | 100 | 100 |
| Input Price | $4.35/M | $0.50/M |
| Output Price | $8.70/M | $2.50/M |
| Context Window | 1,048,576 | 262,144 |
| Max Output | 131,072 | 235,929 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | ✓ | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Seed 2.1 Turbo costs $1.12 and MiMo-V2.6-Pro-UltraSpeed costs $6.52, so Seed 2.1 Turbo is about 5.8 times cheaper for the same work.
MiMo-V2.6-Pro-UltraSpeed reads up to 1,048,576 tokens at once, roughly 1,573 pages of text, against about 393 pages for Seed 2.1 Turbo.
Only MiMo-V2.6-Pro-UltraSpeed offers audio input.
Across the 18 tasks where they differ, MiMo-V2.6-Pro-UltraSpeed scores higher on 13 (SQL Generation, Code Review, Code Refactoring and others), Seed 2.1 Turbo on 5 (Code Completion, Regex Writing, JSON Extraction and others).
MiMo-V2.6-Pro-UltraSpeed was released in September 2026 and Seed 2.1 Turbo in August 2026.
Pick MiMo-V2.6-Pro-UltraSpeed if you need long documents, audio input or the stronger all-round task scores; pick Seed 2.1 Turbo 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 | Xiaomi: MiMo-V2.6-Pro-UltraSpeed | ByteDance Seed: Seed 2.1 Turbo |
|---|---|---|
| SQL Generation | 132 | 130 |
| Code Review | 132 | 126 |
| Code Completion | 117 | 128 |
| Code Refactoring | 136 | 127 |
| Bug Fixing | 136 | 130 |
| Unit Test Generation | 124 | 121 |
| Code Documentation | 129 | 125 |
| Regex Writing | 117 | 119 |
| CI/CD Pipelines | 120 | 117 |
| CSV / Spreadsheet Cleanup | 132 | 128 |
| ETL Scripting | 128 | 122 |
| JSON Extraction | 121 | 131 |
| Bulk Data Labeling | 118 | 129 |
| OCR / Document Parsing | 131 | 128 |
| Table Extraction from PDFs | 131 | 128 |
| Long-Document Summarization | 136 | 129 |
| Short-Form Summarization | 113 | 123 |
| Blog Post Writing | 120 | 118 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →