What is the difference between Gemini 2.5 Pro Experimental and o3 Mini?

Gemini 2.5 Pro Experimental is developed by Google AI while o3 Mini is developed by OpenAI. Gemini 2.5 Pro Experimental has a 1.0M token context window vs o3 Mini's 64K. You can compare their actual outputs across 43 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.5 Pro Experimental or o3 Mini?

It depends on your use case. Gemini 2.5 Pro Experimental and o3 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 43 challenges so you can judge which fits your needs best.

How much does Gemini 2.5 Pro Experimental cost compared to o3 Mini?

Gemini 2.5 Pro Experimental costs $1/M input tokens and o3 Mini costs $1.1/M input tokens. Gemini 2.5 Pro Experimental is $0.10/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Gemini 2.5 Pro Experimental and o3 Mini on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Pro Experimental and o3 Mini across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Mar 2025

Gemini 2.5 Pro Experimentalvso3 Mini

Gemini 2.5 Pro Experimental is cheaper than o3 Mini at $1/M vs $1.1/M input tokens.

Gemini 2.5 Pro Experimental and o3 Mini compared across 43 shared prompts
Spec	Gemini 2.5 Pro Experimental	o3 Mini
Input price	$1/M tokens	$1.1/M tokens
Output price	$2/M tokens	$4.4/M tokens
Context window	1.0M tokens	64K tokens
Parameters	Not disclosed	Not disclosed
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Mar 2025	Dec 2024
MMLU	90.0%	85.9%