head-to-head

SpaceXAI: Grok 4.6 vs SpaceXAI: Grok 4.5

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-27.

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 4.6 leads 75.3 to 65.0.

Across the 18 tasks where they differ, Grok 4.6 scores higher on 18 (SQL Generation, Code Review, Code Completion and others).

Grok 4.6 was released in August 2026 and Grok 4.5 in July 2026.

Pick Grok 4.6 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 4.6	SpaceXAI: Grok 4.5
SQL Generation	142	140
Code Review	145	144
Code Completion	119	119
Code Refactoring	147	146
Bug Fixing	149	148
Unit Test Generation	132	131
Code Documentation	137	136
Regex Writing	125	124
CI/CD Pipelines	128	127
Frontend Component Design	130	129
Data Analysis	135	133
CSV / Spreadsheet Cleanup	136	135
ETL Scripting	138	137
OCR / Document Parsing	134	134
Table Extraction from PDFs	134	134
Long-Document Summarization	148	147
Short-Form Summarization	118	117
Blog Post Writing	130	128

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