What is the difference between GPT-5.1 Codex Max and Qwen3.8 Max?

GPT-5.1 Codex Max is developed by OpenAI while Qwen3.8 Max is developed by Qwen. You can compare their actual outputs across 21 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1 Codex Max or Qwen3.8 Max?

It depends on your use case. GPT-5.1 Codex Max and Qwen3.8 Max each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 21 challenges so you can judge which fits your needs best.

How can I compare GPT-5.1 Codex Max and Qwen3.8 Max on Rival?

This page shows a side-by-side comparison of GPT-5.1 Codex Max and Qwen3.8 Max 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 Max and Qwen3.8 Max?

GPT-5.1 Codex Max is developed by OpenAI while Qwen3.8 Max is developed by Qwen. You can compare their actual outputs across 21 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1 Codex Max or Qwen3.8 Max?

It depends on your use case. GPT-5.1 Codex Max and Qwen3.8 Max each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 21 challenges so you can judge which fits your needs best.

How can I compare GPT-5.1 Codex Max and Qwen3.8 Max on Rival?

This page shows a side-by-side comparison of GPT-5.1 Codex Max and Qwen3.8 Max 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 Max vs Qwen3.8 Max: Which Is Better?

Updated Aug 2026

Our Verdict

GPT-5.1 Codex Max

Qwen3.8 Max

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

What do GPT-5.1 Codex Max and Qwen3.8 Max say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.1 Codex Max

Input

—

Output

—

Qwen3.8 Max

Input

$2.00

Output

$6.00

Writing DNA

Style Comparison

Similarity

36%

Qwen3.8 Max uses 15.5x more headings

GPT-5.1 Codex Max

Qwen3.8 Max

60%Vocabulary48%

16wSentence Length17w

0.36Hedging0.95

2.3Bold4.3

4.2Lists8.2

0.00Emoji0.00

0.12Headings1.92

0.03Transitions0.02

Based on 13 + 13 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.1 Codex Max vs Ox AlphaNew provider

GPT-5.1 Codex Max vs MiniMax M3New provider

GPT-5.1 Codex Max vs Gemini 3.6 FlashNew provider

Updated Aug 2026

Our Verdict

GPT-5.1 Codex Max

Qwen3.8 Max

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

What do GPT-5.1 Codex Max and Qwen3.8 Max say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.1 Codex Max

Input

—

Output

—

Qwen3.8 Max

Input

$2.00

Output

$6.00

Writing DNA

Style Comparison

Similarity

36%

Qwen3.8 Max uses 15.5x more headings

GPT-5.1 Codex Max

Qwen3.8 Max

60%Vocabulary48%

16wSentence Length17w

0.36Hedging0.95

2.3Bold4.3

4.2Lists8.2

0.00Emoji0.00

0.12Headings1.92

0.03Transitions0.02

Based on 13 + 13 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.1 Codex Max vs Ox AlphaNew provider

GPT-5.1 Codex Max vs MiniMax M3New provider

GPT-5.1 Codex Max vs Gemini 3.6 FlashNew provider