What is the difference between GPT-4.1 Nano and xAI: Grok 4.5?

GPT-4.1 Nano is developed by OpenAI while xAI: Grok 4.5 is developed by xAI. GPT-4.1 Nano has a 1.0M token context window vs xAI: Grok 4.5's 500K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.1 Nano or xAI: Grok 4.5?

It depends on your use case. GPT-4.1 Nano and xAI: Grok 4.5 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 GPT-4.1 Nano cost compared to xAI: Grok 4.5?

GPT-4.1 Nano costs $0.1/M input tokens and xAI: Grok 4.5 costs $2/M input tokens. GPT-4.1 Nano is $1.90/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 GPT-4.1 Nano and xAI: Grok 4.5 on Rival?

This page shows a side-by-side comparison of GPT-4.1 Nano and xAI: Grok 4.5 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.

What is the difference between GPT-4.1 Nano and xAI: Grok 4.5?

GPT-4.1 Nano is developed by OpenAI while xAI: Grok 4.5 is developed by xAI. GPT-4.1 Nano has a 1.0M token context window vs xAI: Grok 4.5's 500K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.1 Nano or xAI: Grok 4.5?

It depends on your use case. GPT-4.1 Nano and xAI: Grok 4.5 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 GPT-4.1 Nano cost compared to xAI: Grok 4.5?

GPT-4.1 Nano costs $0.1/M input tokens and xAI: Grok 4.5 costs $2/M input tokens. GPT-4.1 Nano is $1.90/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 GPT-4.1 Nano and xAI: Grok 4.5 on Rival?

This page shows a side-by-side comparison of GPT-4.1 Nano and xAI: Grok 4.5 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.

GPT-4.1 Nano vs xAI: Grok 4.5: Which Is Better?

Updated Jul 2026

Our Verdict

xAI: Grok 4.5

GPT-4.1 NanoRunner-up

No community votes yet. On paper, xAI: Grok 4.5 has the edge — bigger model tier, newer.

GPT-4.1 Nano is 15x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.1 Nano

Input

$0.10

20× cheaper

Output

$0.40

15× cheaper

xAI: Grok 4.5

Input

$2.00

Output

$6.00

GPT-4.1 Nano is cheaper on both — 20× input, 15× output

Writing DNA

Style Comparison

Similarity

42%

xAI: Grok 4.5 uses 9.0x more emoji

GPT-4.1 Nano

xAI: Grok 4.5

57%Vocabulary61%

25wSentence Length16w

0.72Hedging0.23

5.6Bold2.5

4.9Lists2.4

0.00Emoji0.09

0.71Headings0.48

0.22Transitions0.06

Based on 24 + 27 text responses

Research

What we learned reading every model

GPT-4.1 Nano and xAI: Grok 4.5 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

GPT-4.1 Nano vs MiniMax M3New provider

GPT-4.1 Nano vs Claude Sonnet 4New provider

GPT-4.1 Nano vs xAI: Grok 4Cross-provider

Updated Jul 2026

Our Verdict

xAI: Grok 4.5

GPT-4.1 NanoRunner-up

No community votes yet. On paper, xAI: Grok 4.5 has the edge — bigger model tier, newer.

GPT-4.1 Nano is 15x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.1 Nano

Input

$0.10

20× cheaper

Output

$0.40

15× cheaper

xAI: Grok 4.5

Input

$2.00

Output

$6.00

GPT-4.1 Nano is cheaper on both — 20× input, 15× output

Writing DNA

Style Comparison

Similarity

42%

xAI: Grok 4.5 uses 9.0x more emoji

GPT-4.1 Nano

xAI: Grok 4.5

57%Vocabulary61%

25wSentence Length16w

0.72Hedging0.23

5.6Bold2.5

4.9Lists2.4

0.00Emoji0.09

0.71Headings0.48

0.22Transitions0.06

Based on 24 + 27 text responses

Research

What we learned reading every model

GPT-4.1 Nano and xAI: Grok 4.5 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

GPT-4.1 Nano vs MiniMax M3New provider

GPT-4.1 Nano vs Claude Sonnet 4New provider

GPT-4.1 Nano vs xAI: Grok 4Cross-provider