What is the difference between Gemini 2.5 Flash Preview and GPT-4?

Gemini 2.5 Flash Preview is developed by Google AI while GPT-4 is developed by OpenAI. Gemini 2.5 Flash Preview has a 1.0M token context window vs GPT-4's 8K. You can compare their actual outputs across 9 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.5 Flash Preview or GPT-4?

It depends on your use case. Gemini 2.5 Flash Preview and GPT-4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 9 challenges so you can judge which fits your needs best.

How much does Gemini 2.5 Flash Preview cost compared to GPT-4?

Gemini 2.5 Flash Preview costs $0.15/M input tokens and GPT-4 costs $30/M input tokens. Gemini 2.5 Flash Preview is $29.85/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 Flash Preview and GPT-4 on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Flash Preview and GPT-4 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 Apr 2025

Gemini 2.5 Flash PreviewvsGPT-4

Gemini 2.5 Flash Preview is cheaper than GPT-4 at $0.15/M vs $30/M input tokens.

Gemini 2.5 Flash Preview and GPT-4 compared across 9 shared prompts
Spec	Gemini 2.5 Flash Preview	GPT-4
Input price	$0.15/M tokens	$30/M tokens
Output price	$0.6/M tokens	$60/M tokens
Context window	1.0M tokens	8K tokens
Parameters	Not disclosed	Not disclosed
Weights	—	Closed
Free API (OpenRouter)	No	No
Released	Apr 2025	May 2023