What is the difference between GPT-4.1 Nano and Grok 3 Thinking?

GPT-4.1 Nano is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-4.1 Nano has a 1.0M token context window vs Grok 3 Thinking's 128K. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.1 Nano or Grok 3 Thinking?

It depends on your use case. GPT-4.1 Nano and Grok 3 Thinking each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 14 challenges so you can judge which fits your needs best.

How can I compare GPT-4.1 Nano and Grok 3 Thinking on Rival?

This page shows a side-by-side comparison of GPT-4.1 Nano and Grok 3 Thinking 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 Apr 2025

GPT-4.1 NanovsGrok 3 Thinking

GPT-4.1 Nano has a larger context window than Grok 3 Thinking (1.0M tokens vs 128K tokens).

GPT-4.1 Nano and Grok 3 Thinking compared across 14 shared prompts
Spec	GPT-4.1 Nano	Grok 3 Thinking
Input price	$0.1/M tokens	—
Output price	$0.4/M tokens	—
Context window	1.0M tokens	128K tokens
Weights	Closed	—
Free API (OpenRouter)	No	—
Released	Apr 2025	Feb 2025
MMLU	80.1%	86.2%