What is the difference between GPT-5.1-Codex and Llama 4 Scout?

GPT-5.1-Codex is developed by OpenAI while Llama 4 Scout is developed by Meta AI. GPT-5.1-Codex has a 400K token context window vs Llama 4 Scout's 10.0M. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1-Codex or Llama 4 Scout?

It depends on your use case. GPT-5.1-Codex and Llama 4 Scout each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How much does GPT-5.1-Codex cost compared to Llama 4 Scout?

GPT-5.1-Codex costs $1.25/M input tokens and Llama 4 Scout costs $0.25/M input tokens. Llama 4 Scout is $1.00/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 GPT-5.1-Codex and Llama 4 Scout on Rival?

This page shows a side-by-side comparison of GPT-5.1-Codex and Llama 4 Scout 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-5.1-Codex and Llama 4 Scout?

GPT-5.1-Codex is developed by OpenAI while Llama 4 Scout is developed by Meta AI. GPT-5.1-Codex has a 400K token context window vs Llama 4 Scout's 10.0M. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1-Codex or Llama 4 Scout?

It depends on your use case. GPT-5.1-Codex and Llama 4 Scout each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How much does GPT-5.1-Codex cost compared to Llama 4 Scout?

GPT-5.1-Codex costs $1.25/M input tokens and Llama 4 Scout costs $0.25/M input tokens. Llama 4 Scout is $1.00/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 GPT-5.1-Codex and Llama 4 Scout on Rival?

This page shows a side-by-side comparison of GPT-5.1-Codex and Llama 4 Scout 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-5.1-Codex vs Llama 4 Scout: Which Is Better?

Updated Nov 2025

Our Verdict

GPT-5.1-Codex

Llama 4 ScoutRunner-up

No community votes yet. On paper, GPT-5.1-Codex has the edge — bigger model tier, newer.

Llama 4 Scout is 20x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-5.1-Codex

Input

$1.25

Output

$10.00

Llama 4 Scout

Input

$0.25

5.0× cheaper

Output

$0.50

20× cheaper

Llama 4 Scout is cheaper on both — 5.0× input, 20× output

Writing DNA

Style Comparison

Similarity

32%

GPT-5.1-Codex uses 8.8x more transitions

GPT-5.1-Codex

Llama 4 Scout

70%Vocabulary43%

17wSentence Length42w

0.39Hedging0.81

3.4Bold4.1

3.5Lists7.3

0.00Emoji0.00

0.50Headings0.30

0.38Transitions0.04

Based on 14 + 10 text responses

Research

What we learned reading every model

GPT-5.1-Codex and Llama 4 Scout 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-5.1-Codex vs Llama 4 MaverickCross-provider

GPT-5.1-Codex vs MiniMax M3New provider

GPT-5.1-Codex vs Grok 3New provider

Updated Nov 2025

Our Verdict

GPT-5.1-Codex

Llama 4 ScoutRunner-up

No community votes yet. On paper, GPT-5.1-Codex has the edge — bigger model tier, newer.

Llama 4 Scout is 20x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-5.1-Codex

Input

$1.25

Output

$10.00

Llama 4 Scout

Input

$0.25

5.0× cheaper

Output

$0.50

20× cheaper

Llama 4 Scout is cheaper on both — 5.0× input, 20× output

Writing DNA

Style Comparison

Similarity

32%

GPT-5.1-Codex uses 8.8x more transitions

GPT-5.1-Codex

Llama 4 Scout

70%Vocabulary43%

17wSentence Length42w

0.39Hedging0.81

3.4Bold4.1

3.5Lists7.3

0.00Emoji0.00

0.50Headings0.30

0.38Transitions0.04

Based on 14 + 10 text responses

Research

What we learned reading every model

GPT-5.1-Codex and Llama 4 Scout 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-5.1-Codex vs Llama 4 MaverickCross-provider

GPT-5.1-Codex vs MiniMax M3New provider

GPT-5.1-Codex vs Grok 3New provider