head-to-head

SpaceXAI: Grok 4.5 vs xAI: Grok Latest

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-08.

The verdict

For a sample job of 1 million input tokens and 250,000 output tokens, both cost $3.50 at current list prices.

Both read up to 500,000 tokens at once, roughly 750 pages of text.

On our blended benchmark score Grok 4.5 leads 65.0 to 5.8.

Across the 18 tasks where they differ, Grok 4.5 scores higher on 18 (SQL Generation, Code Review, Code Completion and others).

Pick Grok 4.5 if you need benchmark performance or the stronger all-round task scores.

Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.

Task	SpaceXAI: Grok 4.5	xAI: Grok Latest
SQL Generation	140	134
Code Review	144	134
Code Completion	119	118
Code Refactoring	146	137
Bug Fixing	148	138
Unit Test Generation	131	125
Code Documentation	136	131
Regex Writing	124	119
CI/CD Pipelines	127	121
Frontend Component Design	129	123
Data Analysis	133	125
CSV / Spreadsheet Cleanup	135	133
ETL Scripting	137	129
OCR / Document Parsing	134	131
Table Extraction from PDFs	134	131
Long-Document Summarization	147	139
Short-Form Summarization	117	115
Blog Post Writing	128	122

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