picksbymodel Get API access →
head-to-head

ByteDance Seed: Seed 2.1 Turbo vs OpenAI: GPT-5.6 Luna Pro

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-13.

ByteDance Seed: Seed 2.1 Turbo OpenAI: GPT-5.6 Luna Pro
Vendorbytedance-seedopenai
Quality Score100100
Input Price$0.50/M$0.10/M
Output Price$2.50/M$0.60/M
Context Window262,1441,050,000
Max Output262,144128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--

Who wins by task?

TaskByteDance Seed: Seed 2.1 TurboOpenAI: GPT-5.6 Luna Pro
SQL Generation 130 133
Code Review 126 132
Code Completion 128 131
Code Refactoring 127 136
Bug Fixing 130 136
Unit Test Generation 121 124
Code Documentation 125 131
Regex Writing 119 119
CI/CD Pipelines 117 120
CSV / Spreadsheet Cleanup 128 133
ETL Scripting 122 128
JSON Extraction 131 131
Bulk Data Labeling 129 129
OCR / Document Parsing 128 131
Table Extraction from PDFs 128 131
Long-Document Summarization 129 137
Short-Form Summarization 123 123
Blog Post Writing 118 121

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

Related comparisons

ByteDance Seed: Seed 2.1 Turbo vs ByteDance Seed: Seed-2.0-Code ByteDance Seed: Seed 2.1 Turbo vs SpaceXAI: Grok 4.6 ByteDance Seed: Seed 2.1 Turbo vs Sakana: Sakana Namazu ByteDance Seed: Seed 2.1 Turbo vs Meta: Muse Spark 1.2 ByteDance Seed: Seed 2.1 Turbo vs Qwen: Qwen3.8 Max ByteDance Seed: Seed 2.1 Turbo vs Thinking Machines: Inkling Small ByteDance Seed: Seed 2.1 Turbo vs Qwen: Qwen3.7 Flash ByteDance Seed: Seed 2.1 Turbo vs Claude Opus 5 (batch)