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Meta: Muse Spark 1.3 vs OpenAI: GPT-5.6 Terra Pro

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-04.

Meta: Muse Spark 1.3 OpenAI: GPT-5.6 Terra Pro
Vendormetaopenai
Quality Score100100
Benchmark Score99.3-
Input Price$1.25/M$2.00/M
Output Price$4.25/M$12.00/M
Context Window1,048,5761,050,000
Max Output943,718128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio✓-
Benchmark Scores
ai_index100.0-
ai_index_agentic97.8-
ai_index_coding100.0-

Who wins by task?

TaskMeta: Muse Spark 1.3OpenAI: GPT-5.6 Terra Pro
SQL Generation 176 132
Code Review 171 132
Code Completion 120 117
Code Refactoring 167 136
Bug Fixing 187 136
Unit Test Generation 157 124
Code Documentation 144 129
Regex Writing 138 117
CI/CD Pipelines 147 120
Frontend Component Design 149 122
Data Analysis 177 124
CSV / Spreadsheet Cleanup 155 132
ETL Scripting 157 128
JSON Extraction 140 121
Bulk Data Labeling 126 117
OCR / Document Parsing 148 131
Table Extraction from PDFs 148 131
Long-Document Summarization 163 136
Short-Form Summarization 124 113
Blog Post Writing 143 120

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

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