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Mistral: Mistral Small 4 vs OpenAI: GPT-5.4

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-22.

Mistral: Mistral Small 4 OpenAI: GPT-5.4
Vendormistralaiopenai
Quality Score100100
Benchmark Score6.190.4
Input Price$0.15/M$2.50/M
Output Price$0.60/M$15.00/M
Context Window262,1441,050,000
Max Output-128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index7.784.8
ai_index_agentic-67.8
ai_index_coding-100.0
eqbench-82.4

Who wins by task?

TaskMistral: Mistral Small 4OpenAI: GPT-5.4
SQL Generation 132 174
Code Review 127 175
Code Completion 129 120
Code Refactoring 129 174
Bug Fixing 131 188
Unit Test Generation 122 159
Code Documentation 127 146
Regex Writing 120 136
CI/CD Pipelines 118 149
Frontend Component Design 122 149
Data Analysis 125 173
CSV / Spreadsheet Cleanup 128 157
ETL Scripting 123 161
JSON Extraction 131 137
Bulk Data Labeling 129 122
OCR / Document Parsing 128 149
Table Extraction from PDFs 128 149
Long-Document Summarization 130 168
Short-Form Summarization 124 122
Blog Post Writing 120 144

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

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