picksbymodel Get API access →
head-to-head

ByteDance Seed: Seed 2.1 Turbo vs OpenAI: GPT-5.6 Terra

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 Terra
Vendorbytedance-seedopenai
Quality Score100100
Benchmark Score-92.7
Input Price$0.50/M$1.00/M
Output Price$2.50/M$6.00/M
Context Window262,1441,050,000
Max Output262,144128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index-93.3
ai_index_agentic-82.8
ai_index_coding-100.0

Who wins by task?

TaskByteDance Seed: Seed 2.1 TurboOpenAI: GPT-5.6 Terra
SQL Generation 130 173
Code Review 126 169
Code Completion 128 120
Code Refactoring 127 165
Bug Fixing 130 183
Unit Test Generation 121 155
Code Documentation 125 143
Regex Writing 119 136
CI/CD Pipelines 117 146
Frontend Component Design 122 148
Data Analysis 124 173
CSV / Spreadsheet Cleanup 128 154
ETL Scripting 122 155
JSON Extraction 131 140
Bulk Data Labeling 129 125
OCR / Document Parsing 128 147
Table Extraction from PDFs 128 147
Long-Document Summarization 129 161
Short-Form Summarization 123 123
Blog Post Writing 118 141

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)