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

xAI: Grok 4 is developed by xAI while Quasar Alpha is developed by OpenRouter. xAI: Grok 4 has a 256K token context window vs Quasar Alpha's 1.0M. You can compare their actual outputs across 4 challenges on RIVAL to see how they differ in practice.

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

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

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

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