What is the difference between Claude 3.7 Thinking Sonnet and Grok 4?

Claude 3.7 Thinking Sonnet is developed by Anthropic while Grok 4 is developed by xAI. Claude 3.7 Thinking Sonnet has a 200K token context window vs Grok 4's 256K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude 3.7 Thinking Sonnet or Grok 4?

It depends on your use case. Claude 3.7 Thinking Sonnet and Grok 4 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 3.7 Thinking Sonnet cost compared to Grok 4?

Claude 3.7 Thinking Sonnet costs $6/M input tokens and Grok 4 costs $3/M input tokens. Grok 4 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.

How can I compare Claude 3.7 Thinking Sonnet and Grok 4 on Rival?

This page shows a side-by-side comparison of Claude 3.7 Thinking Sonnet and Grok 4 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 Jul 2025

Claude 3.7 Thinking SonnetvsGrok 4

Grok 4 is cheaper than Claude 3.7 Thinking Sonnet at $3/M vs $6/M input tokens.

Claude 3.7 Thinking Sonnet and Grok 4 compared across 53 shared prompts
Spec	Claude 3.7 Thinking Sonnet	Grok 4
Input price	$6/M tokens	$3/M tokens
Output price	$30/M tokens	$15/M tokens
Context window	200K tokens	256K tokens
Parameters	Not disclosed	Not disclosed
Free API (OpenRouter)	No	No
Released	Feb 2025	Jul 2025