What is the difference between Gemini 2.5 Flash Preview and Gemini 3.6 Flash?

Both are developed by Google AI but target different use cases. Gemini 2.5 Flash Preview has a 1.0M token context window vs Gemini 3.6 Flash's 1.0M. You can compare their actual outputs across 26 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.5 Flash Preview or Gemini 3.6 Flash?

It depends on your use case. Gemini 2.5 Flash Preview and Gemini 3.6 Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 26 challenges so you can judge which fits your needs best.

How much does Gemini 2.5 Flash Preview cost compared to Gemini 3.6 Flash?

Gemini 2.5 Flash Preview costs $0.15/M input tokens and Gemini 3.6 Flash costs $1.5/M input tokens. Gemini 2.5 Flash Preview is $1.35/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 Gemini 3.6 Flash on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Flash Preview and Gemini 3.6 Flash 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 Jul 2026

Gemini 2.5 Flash PreviewvsGemini 3.6 Flash

Gemini 2.5 Flash Preview is cheaper than Gemini 3.6 Flash at $0.15/M vs $1.5/M input tokens.

Gemini 2.5 Flash Preview and Gemini 3.6 Flash compared across 26 shared prompts
Spec	Gemini 2.5 Flash Preview	Gemini 3.6 Flash
Input price	$0.15/M tokens	$1.5/M tokens
Output price	$0.6/M tokens	$7.5/M tokens
Context window	1.0M tokens	1.0M tokens
Weights	—	Closed
Free API (OpenRouter)	No	No
Released	Apr 2025	Jul 2026