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GPT-5 vs Gemini 2.5 Pro Preview 06-05

Compare GPT-5 by OpenAI against Gemini 2.5 Pro Preview 06-05 by Google AI, in 17 community votes, gemini 2.5 pro preview 06-05 wins 56% of head-to-head duels, context windows of 400K vs 1.0M, tested across 37 shared challenges. Updated April 2026.

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

Gemini 2.5 Pro Preview 06-05 is the better choice overall, winning 56% of 17 blind community votes on Rival. GPT-5 costs $1.25/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. Context windows: 400K vs 1049K tokens. Compare their real outputs side by side below.

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

GPT-5 is made by openai while Gemini 2.5 Pro Preview 06-05 is from google. GPT-5 has a 400K token context window compared to Gemini 2.5 Pro Preview 06-05's 1049K. On pricing, GPT-5 costs $1.25/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. In community voting, In 17 community votes, Gemini 2.5 Pro Preview 06-05 wins 56% of head-to-head duels.

In 17 community votes, Gemini 2.5 Pro Preview 06-05 wins 56% of head-to-head duels. GPT-5 leads in Image Generation, while Gemini 2.5 Pro Preview 06-05 leads in Web Design. Based on blind community voting from the Rival open dataset of 17+ human preference judgments for this pair.

Web Design: Gemini 2.5 Pro Preview 06-05 wins 83% of votes
Reasoning: GPT-5 and Gemini 2.5 Pro Preview 06-05 are tied
Image Generation: GPT-5 wins 100% of votes
Our Verdict
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05Winner
GPT-5
GPT-5Runner-up

Gemini 2.5 Pro Preview 06-05 has the edge overall. In 17 blind votes, Gemini 2.5 Pro Preview 06-05 wins 56% of the time.

Pick GPT-5 for Image Generation. Pick Gemini 2.5 Pro Preview 06-05 for Web Design.

Slight edge
Writing DNA

Style Comparison

Similarity
100%

Gemini 2.5 Pro Preview 06-05 uses 25.6x more bold

GPT-5
Gemini 2.5 Pro Preview 06-05
65%Vocabulary51%
13wSentence Length15w
0.20Hedging0.31
0.2Bold4.8
4.6Lists4.1
0.00Emoji0.00
0.16Headings0.98
0.03Transitions0.05
Based on 16 + 20 text responses
vs

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GPT-5Gemini 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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