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Qwen: Qwen3.8 27B (free) vs ByteDance Seed: Seed 2.1 Turbo

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

Qwen: Qwen3.8 27B (free) ByteDance Seed: Seed 2.1 Turbo
Vendorqwenbytedance-seed
Quality Score100100
Benchmark Score55.6-
Input PriceFree$0.50/M
Output PriceFree$2.50/M
Context Window262,144262,144
Max Output235,929235,929
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index55.6-

Who wins by task?

TaskQwen: Qwen3.8 27B (free)ByteDance Seed: Seed 2.1 Turbo
SQL Generation 137 130
Code Review 137 126
Code Completion 130 128
Code Refactoring 136 127
Bug Fixing 141 130
Unit Test Generation 127 121
Code Documentation 131 125
Regex Writing 125 119
CI/CD Pipelines 123 117
Frontend Component Design 128 122
Data Analysis 132 124
CSV / Spreadsheet Cleanup 130 128
ETL Scripting 130 122
JSON Extraction 132 131
Bulk Data Labeling 130 129
OCR / Document Parsing 131 128
Table Extraction from PDFs 131 128
Long-Document Summarization 138 129
Short-Form Summarization 126 123
Blog Post Writing 125 118

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

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