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Meta: Muse Spark 1.1 vs OpenAI: GPT-5.6 Luna

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

Meta: Muse Spark 1.1 OpenAI: GPT-5.6 Luna
Vendormetaopenai
Quality Score100100
Benchmark Score84.787.6
Input Price$1.25/M$0.20/M
Output Price$4.25/M$1.20/M
Context Window1,048,5761,050,000
Max Output943,718128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio✓-
Benchmark Scores
ai_index87.886.3
ai_index_agentic65.677.4
ai_index_coding100.0100.0

Who wins by task?

TaskMeta: Muse Spark 1.1OpenAI: GPT-5.6 Luna
SQL Generation 170 172
Code Review 166 167
Code Completion 120 133
Code Refactoring 163 164
Bug Fixing 178 180
Unit Test Generation 153 154
Code Documentation 142 143
Regex Writing 135 137
CI/CD Pipelines 144 144
Frontend Component Design 146 146
Data Analysis 168 171
CSV / Spreadsheet Cleanup 153 154
ETL Scripting 153 154
JSON Extraction 139 149
Bulk Data Labeling 126 135
OCR / Document Parsing 146 146
Table Extraction from PDFs 146 146
Long-Document Summarization 159 160
Short-Form Summarization 123 132
Blog Post Writing 139 140

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

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