GPT-4.5
Nothing here. The model returned empty. We stared at it for a while.
GPT-4.5 vs GPT-5 Mini
Compare GPT-4.5 and GPT-5 Mini, both from OpenAI, tested across 25 shared challenges. Updated April 2026.
Which is better, GPT-4.5 or GPT-5 Mini?
GPT-4.5 and GPT-5 Mini are both competitive models. GPT-4.5 costs $75/M input tokens vs $0.25/M for GPT-5 Mini. Compare their real outputs side by side below.
Key Differences Between GPT-4.5 and GPT-5 Mini
GPT-4.5 is made by openai while GPT-5 Mini is from openai. On pricing, GPT-4.5 costs $75/M input tokens vs $0.25/M for GPT-5 Mini.
Our Verdict
GPT-4.5
GPT-5 Mini
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT-5 Mini is 75x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
98%
GPT-4.5 uses 466.6x more bold
GPT-4.5
GPT-5 Mini
63%Vocabulary62%
16wSentence Length21w
0.57Hedging0.16
4.7Bold0.0
6.4Lists3.4
0.00Emoji0.00
1.30Headings0.00
0.54Transitions0.05
Based on 11 + 15 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
FAQ