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OpenAI: GPT-5.4 Nano vs ByteDance Seed: Seed-2.0-Mini

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

OpenAI: GPT-5.4 Nano ByteDance Seed: Seed-2.0-Mini
Vendoropenaibytedance-seed
Quality Score100100
Benchmark Score68.0-
Input Price$0.20/M$0.10/M
Output Price$1.25/M$0.40/M
Context Window400,000262,144
Max Output128,000131,072
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index63.1-
ai_index_agentic45.4-
ai_index_coding92.5-

Who wins by task?

TaskOpenAI: GPT-5.4 NanoByteDance Seed: Seed-2.0-Mini
SQL Generation 163 131
Code Review 158 126
Code Completion 133 129
Code Refactoring 157 127
Bug Fixing 168 130
Unit Test Generation 148 121
Code Documentation 140 126
Regex Writing 132 119
CI/CD Pipelines 139 117
Frontend Component Design 141 122
Data Analysis 159 124
CSV / Spreadsheet Cleanup 151 128
ETL Scripting 148 122
JSON Extraction 146 131
Bulk Data Labeling 134 129
OCR / Document Parsing 144 128
Table Extraction from PDFs 144 128
Long-Document Summarization 154 129
Short-Form Summarization 130 123
Blog Post Writing 135 119

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

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