What is the difference between Claude Opus 4 and Grok 4.20 Multi-Agent Beta?

Claude Opus 4 is developed by Anthropic while Grok 4.20 Multi-Agent Beta is developed by xAI. Claude Opus 4 has a 200K token context window vs Grok 4.20 Multi-Agent Beta's 2.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4 or Grok 4.20 Multi-Agent Beta?

It depends on your use case. Claude Opus 4 and Grok 4.20 Multi-Agent Beta each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Claude Opus 4 cost compared to Grok 4.20 Multi-Agent Beta?

Claude Opus 4 costs $15/M input tokens and Grok 4.20 Multi-Agent Beta costs $2/M input tokens. Grok 4.20 Multi-Agent Beta is $13.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Claude Opus 4 and Grok 4.20 Multi-Agent Beta on Rival?

This page shows a side-by-side comparison of Claude Opus 4 and Grok 4.20 Multi-Agent Beta across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Mar 2026

Claude Opus 4vsGrok 4.20 Multi-Agent Beta

Grok 4.20 Multi-Agent Beta is cheaper than Claude Opus 4 at $2/M vs $15/M input tokens.

Claude Opus 4 and Grok 4.20 Multi-Agent Beta compared across 53 shared prompts
Spec	Claude Opus 4	Grok 4.20 Multi-Agent Beta
Input price	$15/M tokens	$2/M tokens
Output price	$75/M tokens	$6/M tokens
Context window	200K tokens	2.0M tokens
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	May 2025	Mar 2026