Question 1

What is the difference between Gemini 2.5 Pro Preview 06-05 and GPT-5?

Accepted Answer

Gemini 2.5 Pro Preview 06-05 is developed by Google AI while GPT-5 is developed by OpenAI. Gemini 2.5 Pro Preview 06-05 has a 1.0M token context window vs GPT-5's 400K. in 16 community votes on RIVAL, Gemini 2.5 Pro Preview 06-05 wins 60% of head-to-head matchups. These results are based on blind head-to-head voting across 37 challenges.

Question 2

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

Accepted Answer

Based on 16 community votes on RIVAL, Gemini 2.5 Pro Preview 06-05 wins 60% of head-to-head matchups against GPT-5. Gemini 2.5 Pro Preview 06-05 is strongest in Web Design, Reasoning. However, GPT-5 leads in Image Generation.

Question 3

How much does Gemini 2.5 Pro Preview 06-05 cost compared to GPT-5?

Accepted Answer

Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens and GPT-5 costs $1.25/M input tokens. GPT-5 is $0.00/M cheaper per input. The more expensive model wins 60% of duels, so the premium may be justified by quality.

Question 4

How are Gemini 2.5 Pro Preview 06-05 vs GPT-5 votes collected on RIVAL?

Accepted Answer

RIVAL presents both models' outputs side-by-side in blind duels — voters see the responses but don't know which model produced each one. This eliminates brand bias. 16 votes have been collected for this pair across 37 challenges. All vote data is part of RIVAL's open dataset.