What is the difference between DeepSeek R1 0528 and OpenAI o3?

DeepSeek R1 0528 is developed by DeepSeek while OpenAI o3 is developed by OpenAI. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek R1 0528 or OpenAI o3?

It depends on your use case. DeepSeek R1 0528 and OpenAI o3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does DeepSeek R1 0528 cost compared to OpenAI o3?

DeepSeek R1 0528 costs $0/M input tokens and OpenAI o3 costs $10/M input tokens. DeepSeek R1 0528 is $10.00/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 0528 and OpenAI o3 on Rival?

This page shows a side-by-side comparison of DeepSeek R1 0528 and OpenAI o3 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

DeepSeek R1 0528vsOpenAI o3

DeepSeek R1 0528 is cheaper than OpenAI o3 at $0/M vs $10/M input tokens.

DeepSeek R1 0528 and OpenAI o3 compared across 53 shared prompts
Spec	DeepSeek R1 0528	OpenAI o3
Input price	Free	$10/M tokens
Output price	Free	$40/M tokens
Context window	164K tokens	—
Parameters	671B (37B active)	Not disclosed
Weights	Open	Closed
Free API (OpenRouter)	No	No
Released	May 2025	Apr 2025
SWE-bench Verified	57.6%	69.1%