head-to-head

Google: Gemini Flash Latest vs SpaceXAI: Grok 4.20

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

Google: Gemini Flash Latest SpaceXAI: Grok 4.20
Vendor~googlex-ai
Quality Score100100
Benchmark Score-50.6
Input Price$0.75/M$1.25/M
Output Price$3.75/M$2.50/M
Context Window1,048,5762,000,000
Max Output65,5361,800,000
Tool Calling
Structured Output
Reasoning Mode
Vision
Audio-
Benchmark Scores
ai_index-42.3
eqbench-55.8

Who wins by task?

TaskGoogle: Gemini Flash LatestSpaceXAI: Grok 4.20
SQL Generation 133 142
Code Review 132 146
Code Completion 131 121
Code Refactoring 136 150
Bug Fixing 136 150
Unit Test Generation 124 133
Code Documentation 131 139
Regex Writing 119 125
CI/CD Pipelines 120 129
Frontend Component Design 122 129
Data Analysis 124 133
CSV / Spreadsheet Cleanup 133 138
ETL Scripting 128 139
JSON Extraction 131 123
Bulk Data Labeling 128 120
OCR / Document Parsing 131 134
Table Extraction from PDFs 131 134
Long-Document Summarization 137 151
Short-Form Summarization 123 118
Blog Post Writing 121 130

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

Related comparisons

Anthropic: Claude Haiku Latest vs Google: Gemini Flash Latest Anthropic: Claude Haiku Latest vs SpaceXAI: Grok 4.20 Anthropic: Claude Sonnet 5 vs Google: Gemini Flash Latest Anthropic: Claude Sonnet 5 vs SpaceXAI: Grok 4.20 Anthropic: Claude Sonnet Latest vs SpaceXAI: Grok 4.20 Google: Gemini 3.1 Flash Lite vs Google: Gemini Flash Latest Google: Gemini 3.1 Flash Lite vs SpaceXAI: Grok 4.20 Google: Gemini 3.5 Flash Lite vs SpaceXAI: Grok 4.20

The Model Movers Report

One email every Friday, built from this site's own rankings: the current top five by benchmark score, every model released in the last seven days, and one note worked out from that week's numbers. You can unsubscribe from any issue with one click.