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xAI: Grok 4.3 vs Mistral: Mistral Medium 3.5

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-19.

xAI: Grok 4.3 Mistral: Mistral Medium 3.5
Vendorx-aimistralai
Quality Score100100
Benchmark Score57.663.3
Input Price$1.25/M$1.50/M
Output Price$2.50/M$7.50/M
Context Window1,000,000262,144
Max Output--
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index62.049.4
ai_index_agentic39.887.7
ai_index_coding69.758.4

Who wins by task?

TaskxAI: Grok 4.3Mistral: Mistral Medium 3.5
Code Review 155 151
Code Completion 120 116
Code Refactoring 155 147
Bug Fixing 164 165
Unit Test Generation 144 142
Code Documentation 139 132
Regex Writing 130 130
CI/CD Pipelines 136 134
Frontend Component Design 138 139
Data Analysis 153 160
CSV / Spreadsheet Cleanup 147 141
ETL Scripting 145 140
JSON Extraction 134 133
Bulk Data Labeling 124 123
OCR / Document Parsing 141 138
Table Extraction from PDFs 141 138
Long-Document Summarization 152 144
Short-Form Summarization 120 120
Blog Post Writing 134 131

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

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