What is the difference between DeepSeek R1 and Gemini 3 Flash Preview?

DeepSeek R1 is developed by DeepSeek while Gemini 3 Flash Preview is developed by Google AI. DeepSeek R1 has a 128K token context window vs Gemini 3 Flash Preview's 1.0M. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek R1 or Gemini 3 Flash Preview?

It depends on your use case. DeepSeek R1 and Gemini 3 Flash Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does DeepSeek R1 cost compared to Gemini 3 Flash Preview?

DeepSeek R1 costs $0.55/M input tokens and Gemini 3 Flash Preview costs $0.5/M input tokens. Gemini 3 Flash Preview is $0.05/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 DeepSeek R1 and Gemini 3 Flash Preview on Rival?

This page shows a side-by-side comparison of DeepSeek R1 and Gemini 3 Flash Preview 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 Dec 2025

DeepSeek R1vsGemini 3 Flash Preview

Gemini 3 Flash Preview is cheaper than DeepSeek R1 at $0.5/M vs $0.55/M input tokens.

DeepSeek R1 and Gemini 3 Flash Preview compared across 54 shared prompts
Spec	DeepSeek R1	Gemini 3 Flash Preview
Input price	$0.55/M tokens	$0.5/M tokens
Output price	$2.19/M tokens	$3/M tokens
Context window	128K tokens	1.0M tokens
Weights	Open	Closed
Free API (OpenRouter)	No	No
Released	Feb 2025	Dec 2025
SWE-bench Verified	49.2%	78.0%