Question 1

What is the difference between GPT-4o mini and GPT-5 Mini?

Accepted Answer

Both are developed by OpenAI but target different use cases. in 121 community votes on RIVAL, GPT-5 Mini wins 69% of head-to-head matchups. These results are based on blind head-to-head voting across 38 challenges.

Question 2

Which is better, GPT-4o mini or GPT-5 Mini?

Accepted Answer

Based on 121 community votes on RIVAL, GPT-5 Mini wins 69% of head-to-head matchups against GPT-4o mini. GPT-5 Mini is strongest in Reasoning, Image Generation. However, GPT-4o mini leads in Web Design, Conversation, Analysis.

Question 3

How much does GPT-4o mini cost compared to GPT-5 Mini?

Accepted Answer

GPT-4o mini costs $0.15/M input tokens and GPT-5 Mini costs $0.25/M input tokens. GPT-4o mini is $0.10/M cheaper per input. The more expensive model wins 69% of duels, so the premium may be justified by quality.

Question 4

How are GPT-4o mini vs GPT-5 Mini 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. 121 votes have been collected for this pair across 38 challenges. All vote data is part of RIVAL's open dataset.