AI Model Release Tracker - Timeline of Major AI Models from 2022-2026

Home/Compare/DeepSeek R1-0528 vs o1

DeepSeek R1-0528 vs o1

DeepSeek DeepSeek R1-0528 vs OpenAI o1 — side-by-side specs.

DeepSeek
DeepSeek R1-0528
OpenAI
o1
Overview
CompanyDeepSeekOpenAI
Release dateMay 28 2025Dec 5 2024
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapo1 shipped 174 days before DeepSeek R1-0528

Which is better: DeepSeek R1-0528 or o1?

DeepSeek R1-0528 and o1 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. o1 shipped 174 days before DeepSeek R1-0528, so benchmark comparisons should account for the intervening progress.

DeepSeek R1-0528 is an open-source / open-weight model; o1 is proprietary.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was DeepSeek R1-0528 released?
DeepSeek R1-0528 was released by DeepSeek on May 28 2025.
When was o1 released?
o1 was released by OpenAI on Dec 5 2024.
Is DeepSeek R1-0528 or o1 open source?
DeepSeek R1-0528 is an open-source / open-weight model released by DeepSeek. o1 is a proprietary model released by OpenAI.

Other comparisons