What is the difference between GPT-4.1 and Llama 3.1 405B?

GPT-4.1 is developed by OpenAI while Llama 3.1 405B is developed by Meta AI. GPT-4.1 has a 1.0M token context window vs Llama 3.1 405B's 128K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.1 or Llama 3.1 405B?

It depends on your use case. GPT-4.1 and Llama 3.1 405B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

How much does GPT-4.1 cost compared to Llama 3.1 405B?

GPT-4.1 costs $2/M input tokens and Llama 3.1 405B costs $2.7/M input tokens. GPT-4.1 is $0.70/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 and Llama 3.1 405B on Rival?

This page shows a side-by-side comparison of GPT-4.1 and Llama 3.1 405B 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 and Llama 3.1 405B?

GPT-4.1 is developed by OpenAI while Llama 3.1 405B is developed by Meta AI. GPT-4.1 has a 1.0M token context window vs Llama 3.1 405B's 128K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.1 or Llama 3.1 405B?

It depends on your use case. GPT-4.1 and Llama 3.1 405B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

How much does GPT-4.1 cost compared to Llama 3.1 405B?

GPT-4.1 costs $2/M input tokens and Llama 3.1 405B costs $2.7/M input tokens. GPT-4.1 is $0.70/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 and Llama 3.1 405B on Rival?

This page shows a side-by-side comparison of GPT-4.1 and Llama 3.1 405B 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 vs Llama 3.1 405B: Which Is Better?

Updated Apr 2025

Our Verdict

GPT-4.1

Llama 3.1 405BRunner-up

No community votes yet. On paper, GPT-4.1 has the edge — newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.1

Input

$2.00

1.4× cheaper

Output

$8.00

Llama 3.1 405B

Input

$2.70

Output

$3.10

2.6× cheaper

GPT-4.1 wins input (1.4× cheaper)·Llama 3.1 405B wins output (2.6× cheaper)

Writing DNA

Style Comparison

Similarity

26%

GPT-4.1 uses 902.6x more bold

GPT-4.1

Llama 3.1 405B

58%Vocabulary56%

19wSentence Length15w

0.38Hedging0.41

9.0Bold0.0

6.1Lists1.9

0.24Emoji0.03

1.01Headings0.00

0.07Transitions0.16

Based on 25 + 5 text responses

Research

What we learned reading every model

GPT-4.1 and Llama 3.1 405B 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 vs MiniMax M3New provider

GPT-4.1 vs Grok 3New provider

GPT-4.1 vs Gemini 2.5 Pro (I/O Edition)New provider

Updated Apr 2025

Our Verdict

GPT-4.1

Llama 3.1 405BRunner-up

No community votes yet. On paper, GPT-4.1 has the edge — newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.1

Input

$2.00

1.4× cheaper

Output

$8.00

Llama 3.1 405B

Input

$2.70

Output

$3.10

2.6× cheaper

GPT-4.1 wins input (1.4× cheaper)·Llama 3.1 405B wins output (2.6× cheaper)

Writing DNA

Style Comparison

Similarity

26%

GPT-4.1 uses 902.6x more bold

GPT-4.1

Llama 3.1 405B

58%Vocabulary56%

19wSentence Length15w

0.38Hedging0.41

9.0Bold0.0

6.1Lists1.9

0.24Emoji0.03

1.01Headings0.00

0.07Transitions0.16

Based on 25 + 5 text responses

Research

What we learned reading every model

GPT-4.1 and Llama 3.1 405B 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 vs MiniMax M3New provider

GPT-4.1 vs Grok 3New provider

GPT-4.1 vs Gemini 2.5 Pro (I/O Edition)New provider