GPT-4.1 vs GPT-5

Compare GPT-4.1 and GPT-5, both from OpenAI, in 4 community votes, gpt-4.1 wins 75% of head-to-head duels, context windows of 1.0M vs 400K, tested across 39 shared challenges. Updated April 2026.

Which is better, GPT-4.1 or GPT-5?

GPT-4.1 is the better choice overall, winning 75% of 4 blind community votes on Rival. GPT-4.1 costs $2/M input tokens vs $1.25/M for GPT-5. Context windows: 1048K vs 400K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 and GPT-5

GPT-4.1 is made by openai while GPT-5 is from openai. GPT-4.1 has a 1048K token context window compared to GPT-5's 400K. On pricing, GPT-4.1 costs $2/M input tokens vs $1.25/M for GPT-5. In community voting, In 4 community votes, GPT-4.1 wins 75% of head-to-head duels.

In 4 community votes, GPT-4.1 wins 75% of head-to-head duels. GPT-4.1 leads in Reasoning. Based on blind community voting from the Rival open dataset of 4+ human preference judgments for this pair.

Reasoning: GPT-4.1 wins 75% of votes
Our Verdict
GPT-4.1
GPT-4.1Winner
GPT-5
GPT-5Runner-up

Pick GPT-4.1. In 4 blind votes, GPT-4.1 wins 75% of the time. That's not luck.

GPT-4.1 particularly excels in Reasoning.

Clear winner
Writing DNA

Style Comparison

Similarity
93%

GPT-4.1 uses 23.7x more emoji

GPT-4.1
GPT-5
58%Vocabulary65%
19wSentence Length13w
0.38Hedging0.20
9.0Bold0.2
6.1Lists4.6
0.24Emoji0.00
1.01Headings0.16
0.07Transitions0.03
Based on 25 + 16 text responses
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GPT-4.1GPT-5

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
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