GPT-4.1 Mini vs GPT-5 Pro

Compare GPT-4.1 Mini and GPT-5 Pro, both from OpenAI, context windows of 1.0M vs 400K, tested across 42 shared challenges. Updated April 2026.

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

GPT-4.1 Mini and GPT-5 Pro are both competitive models. GPT-4.1 Mini costs $0.4/M input tokens vs $15/M for GPT-5 Pro. Context windows: 1048K vs 400K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 Mini and GPT-5 Pro

GPT-4.1 Mini is made by openai while GPT-5 Pro is from openai. GPT-4.1 Mini has a 1048K token context window compared to GPT-5 Pro's 400K. On pricing, GPT-4.1 Mini costs $0.4/M input tokens vs $15/M for GPT-5 Pro.

Our Verdict
GPT-5 Pro
GPT-5 Pro
GPT-4.1 Mini
GPT-4.1 MiniRunner-up

No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer.

GPT-4.1 Mini is 75x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
93%

GPT-4.1 Mini uses 470.3x more bold

GPT-4.1 Mini
GPT-5 Pro
59%Vocabulary65%
19wSentence Length15w
0.46Hedging0.32
4.7Bold0.0
4.9Lists2.9
0.00Emoji0.00
0.76Headings0.00
0.17Transitions0.01
Based on 23 + 11 text responses
vs

Ask them anything yourself

GPT-4.1 MiniGPT-5 Pro

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
FAQ

Common questions