Gemini 2.5 Pro Experimental vs GPT-4

Compare Gemini 2.5 Pro Experimental by Google AI against GPT-4 by OpenAI, context windows of 1.0M vs 8K, tested across 20 shared challenges. Updated April 2026.

Which is better, Gemini 2.5 Pro Experimental or GPT-4?

Gemini 2.5 Pro Experimental and GPT-4 are both competitive models. Gemini 2.5 Pro Experimental costs $1/M input tokens vs $30/M for GPT-4. Context windows: 1000K vs 8K tokens. Compare their real outputs side by side below.

Key Differences Between Gemini 2.5 Pro Experimental and GPT-4

Gemini 2.5 Pro Experimental is made by google while GPT-4 is from openai. Gemini 2.5 Pro Experimental has a 1000K token context window compared to GPT-4's 8K. On pricing, Gemini 2.5 Pro Experimental costs $1/M input tokens vs $30/M for GPT-4.

Our Verdict
Gemini 2.5 Pro Experimental
Gemini 2.5 Pro Experimental
GPT-4
GPT-4Runner-up

No community votes yet. On paper, Gemini 2.5 Pro Experimental has the edge — newer, bigger context window.

Gemini 2.5 Pro Experimental is 30x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

Gemini 2.5 Pro Experimental uses 39.0x more headings

Gemini 2.5 Pro Experimental
GPT-4
54%Vocabulary59%
15wSentence Length18w
0.35Hedging1.10
5.6Bold0.8
3.9Lists2.5
0.00Emoji0.00
0.39Headings0.00
0.17Transitions0.45
Based on 18 + 15 text responses
vs

Ask them anything yourself

Gemini 2.5 Pro ExperimentalGPT-4

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