What is the difference between Gemini 2.5 Pro (I/O Edition) and GPT-3.5 Turbo?

Gemini 2.5 Pro (I/O Edition) is developed by Google AI while GPT-3.5 Turbo is developed by OpenAI. You can compare their actual outputs across 40 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.5 Pro (I/O Edition) or GPT-3.5 Turbo?

It depends on your use case. Gemini 2.5 Pro (I/O Edition) and GPT-3.5 Turbo each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 40 challenges so you can judge which fits your needs best.

How much does Gemini 2.5 Pro (I/O Edition) cost compared to GPT-3.5 Turbo?

Gemini 2.5 Pro (I/O Edition) costs $1.25/M input tokens and GPT-3.5 Turbo costs $1.5/M input tokens. Gemini 2.5 Pro (I/O Edition) is $0.25/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 (I/O Edition) and GPT-3.5 Turbo on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Pro (I/O Edition) and GPT-3.5 Turbo 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 May 2025

Gemini 2.5 Pro (I/O Edition)vsGPT-3.5 Turbo

Gemini 2.5 Pro (I/O Edition) is cheaper than GPT-3.5 Turbo at $1.25/M vs $1.5/M input tokens.

Gemini 2.5 Pro (I/O Edition) and GPT-3.5 Turbo compared across 40 shared prompts
Spec	Gemini 2.5 Pro (I/O Edition)	GPT-3.5 Turbo
Input price	$1.25/M tokens	$1.5/M tokens
Output price	$10/M tokens	$2/M tokens
Context window	—	16K tokens
Parameters	Not disclosed	Not disclosed
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	May 2025	Mar 2022