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GPT-5 Mini vs Gemini 2.5 Pro Preview 06-05

Compare GPT-5 Mini by OpenAI against Gemini 2.5 Pro Preview 06-05 by Google AI, tested across 35 shared challenges. Updated April 2026.

Which is better, GPT-5 Mini or Gemini 2.5 Pro Preview 06-05?

GPT-5 Mini and Gemini 2.5 Pro Preview 06-05 are both competitive models. GPT-5 Mini costs $0.25/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. Compare their real outputs side by side below.

Key Differences Between GPT-5 Mini and Gemini 2.5 Pro Preview 06-05

GPT-5 Mini is made by openai while Gemini 2.5 Pro Preview 06-05 is from google. On pricing, GPT-5 Mini costs $0.25/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05.

Our Verdict
GPT-5 Mini
GPT-5 Mini
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05

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 5.0x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
92%

Gemini 2.5 Pro Preview 06-05 uses 482.5x more bold

GPT-5 Mini
Gemini 2.5 Pro Preview 06-05
62%Vocabulary51%
21wSentence Length15w
0.16Hedging0.31
0.0Bold4.8
3.4Lists4.1
0.00Emoji0.00
0.00Headings0.98
0.05Transitions0.05
Based on 15 + 20 text responses
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GPT-5 MiniGemini 2.5 Pro Preview 06-05

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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