Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

It depends on your use case. Aurora Alpha and xAI: Grok 4 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 Aurora Alpha cost compared to xAI: Grok 4?

Accepted Answer

Aurora Alpha costs $0/M input tokens and xAI: Grok 4 costs $3/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 Aurora Alpha and xAI: Grok 4 on RIVAL?

Accepted Answer

This page shows a side-by-side comparison of Aurora Alpha and xAI: Grok 4 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.

Aurora Alpha vs xAI: Grok 4

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

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

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

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