Question 1

What is the difference between xAI: Grok 4 and Aurora Alpha?

Accepted Answer

xAI: Grok 4 is developed by xAI while Aurora Alpha is developed by OpenRouter. xAI: Grok 4 has a 256K token context window vs Aurora Alpha's 128K. You can compare their actual outputs across 38 challenges on RIVAL to see how they differ in practice.

Question 2

Which is better, xAI: Grok 4 or Aurora Alpha?

Accepted Answer

It depends on your use case. xAI: Grok 4 and Aurora Alpha each have strengths in different areas. RIVAL lets you compare their real outputs side-by-side across 38 challenges so you can judge which fits your needs best.

Question 3

How much does xAI: Grok 4 cost compared to Aurora Alpha?

Accepted Answer

xAI: Grok 4 costs $3/M input tokens and Aurora Alpha costs $0/M input tokens. Aurora Alpha is $3.00/M cheaper per input. Check their side-by-side outputs on RIVAL to see if the price difference is justified by quality.

Question 4

How can I compare xAI: Grok 4 and Aurora Alpha on RIVAL?

Accepted Answer

This page shows a side-by-side comparison of xAI: Grok 4 and Aurora Alpha across shared challenges. You can vote on which model produced the better output, and Pro users can create custom challenges to test both models with their own prompts.

xAI: Grok 4 vs Aurora Alpha

What is the difference between xAI: Grok 4 and Aurora Alpha?

Which is better, xAI: Grok 4 or Aurora Alpha?

How much does xAI: Grok 4 cost compared to Aurora Alpha?

How can I compare xAI: Grok 4 and Aurora Alpha on RIVAL?