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OpenAI: GPT-5.6 Terra vs Mistral: Mistral Medium 3.5

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

OpenAI: GPT-5.6 Terra Mistral: Mistral Medium 3.5
Vendoropenaimistralai
Quality Score100100
Benchmark Score71.119.3
Input Price$2.00/M$1.50/M
Output Price$12.00/M$7.50/M
Context Window1,050,000262,144
Max Output128,000209,715
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index69.423.4

Who wins by task?

TaskOpenAI: GPT-5.6 TerraMistral: Mistral Medium 3.5
SQL Generation 140 133
Code Review 145 130
Code Completion 118 115
Code Refactoring 147 131
Bug Fixing 149 134
Unit Test Generation 132 124
Code Documentation 135 126
Regex Writing 124 120
CI/CD Pipelines 128 120
Frontend Component Design 130 124
Data Analysis 134 127
CSV / Spreadsheet Cleanup 135 128
ETL Scripting 137 125
JSON Extraction 121 122
Bulk Data Labeling 117 119
OCR / Document Parsing 134 129
Table Extraction from PDFs 134 129
Long-Document Summarization 147 132
Short-Form Summarization 116 115
Blog Post Writing 128 121

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

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