What is the difference between DeepSeek V3.1 and Gemini 1.5 Pro?

DeepSeek V3.1 is developed by DeepSeek while Gemini 1.5 Pro is developed by Google AI. DeepSeek V3.1 has a 164K token context window vs Gemini 1.5 Pro's 1.0M. You can compare their actual outputs across 19 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V3.1 or Gemini 1.5 Pro?

It depends on your use case. DeepSeek V3.1 and Gemini 1.5 Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 19 challenges so you can judge which fits your needs best.

How much does DeepSeek V3.1 cost compared to Gemini 1.5 Pro?

DeepSeek V3.1 costs $0.2/M input tokens and Gemini 1.5 Pro costs $3.5/M input tokens. DeepSeek V3.1 is $3.30/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 V3.1 and Gemini 1.5 Pro on Rival?

This page shows a side-by-side comparison of DeepSeek V3.1 and Gemini 1.5 Pro 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 Aug 2025

DeepSeek V3.1vsGemini 1.5 Pro

DeepSeek V3.1 is cheaper than Gemini 1.5 Pro at $0.2/M vs $3.5/M input tokens.

DeepSeek V3.1 and Gemini 1.5 Pro compared across 19 shared prompts
Spec	DeepSeek V3.1	Gemini 1.5 Pro
Input price	$0.2/M tokens	$3.5/M tokens
Output price	$0.8/M tokens	$10.5/M tokens
Context window	164K tokens	1.0M tokens
Weights	Open	—
Free API (OpenRouter)	No	No
Released	Aug 2025	Feb 2024