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Qwen: Qwen3.5 Plus 2026-04-20 vs ByteDance Seed: Seed-2.0-Mini

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-20.

Qwen: Qwen3.5 Plus 2026-04-20 ByteDance Seed: Seed-2.0-Mini
Vendorqwenbytedance-seed
Quality Score100100
Input Price$0.30/M$0.10/M
Output Price$1.80/M$0.40/M
Context Window1,000,000262,144
Max Output65,536131,072
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--

Who wins by task?

TaskQwen: Qwen3.5 Plus 2026-04-20ByteDance Seed: Seed-2.0-Mini
SQL Generation 133 131
Code Review 132 126
Code Completion 131 129
Code Refactoring 136 127
Bug Fixing 136 130
Unit Test Generation 124 121
Code Documentation 131 126
Regex Writing 119 119
CI/CD Pipelines 120 117
CSV / Spreadsheet Cleanup 133 128
ETL Scripting 128 122
JSON Extraction 131 131
Bulk Data Labeling 129 129
OCR / Document Parsing 131 128
Table Extraction from PDFs 131 128
Long-Document Summarization 137 129
Short-Form Summarization 123 123
Blog Post Writing 121 119

Scores reflect capability match + benchmark data + pricing for each task. Methodology →

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