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Google: Gemini 3.1 Flash Lite vs xAI: Grok 4.3

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-23.

Google: Gemini 3.1 Flash Lite xAI: Grok 4.3
Vendorgooglex-ai
Quality Score100100
Benchmark Score-57.7
Input Price$0.25/M$1.25/M
Output Price$1.50/M$2.50/M
Context Window1,048,5761,000,000
Max Output65,536-
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio✓-
Benchmark Scores
ai_index-62.0
ai_index_agentic-39.8
ai_index_coding-69.7

Who wins by task?

TaskGoogle: Gemini 3.1 Flash LitexAI: Grok 4.3
SQL Generation 133 158
Code Review 132 155
Code Completion 131 120
Code Refactoring 136 155
Bug Fixing 136 164
Unit Test Generation 124 144
Code Documentation 131 139
Regex Writing 119 130
CI/CD Pipelines 120 136
Frontend Component Design 122 138
Data Analysis 124 153
CSV / Spreadsheet Cleanup 133 147
ETL Scripting 128 145
JSON Extraction 131 134
Bulk Data Labeling 129 124
OCR / Document Parsing 131 141
Table Extraction from PDFs 131 141
Long-Document Summarization 137 152
Short-Form Summarization 123 120
Blog Post Writing 121 134

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

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