GPT-4.1 vs OpenAI o4-mini

Compare GPT-4.1 and OpenAI o4-mini, both from OpenAI, tested across 34 shared challenges. Updated April 2026.

Which is better, GPT-4.1 or OpenAI o4-mini?

GPT-4.1 and OpenAI o4-mini are both competitive models. GPT-4.1 costs $2/M input tokens vs $1.1/M for OpenAI o4-mini. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 and OpenAI o4-mini

GPT-4.1 is made by openai while OpenAI o4-mini is from openai. On pricing, GPT-4.1 costs $2/M input tokens vs $1.1/M for OpenAI o4-mini.

Our Verdict
GPT-4.1
GPT-4.1
OpenAI o4-mini
OpenAI o4-miniRunner-up

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

Too close to call
Writing DNA

Style Comparison

Similarity
86%

GPT-4.1 uses 902.6x more bold

GPT-4.1
OpenAI o4-mini
58%Vocabulary73%
19wSentence Length15w
0.38Hedging0.18
9.0Bold0.0
6.1Lists2.1
0.24Emoji0.00
1.01Headings0.00
0.07Transitions0.02
Based on 25 + 10 text responses
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GPT-4.1OpenAI o4-mini

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
Free preview13 of 58 slides
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