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

Home/Compare/Claude Opus 4 vs o1-pro

Claude Opus 4 vs o1-pro

2 vs 0 benchmarks won

Anthropic
Claude Opus 4
OpenAI
o1-pro
Overview
CompanyAnthropicOpenAI
Release dateMay 22 2025Mar 19 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
79.6%
Software engineering
SWE-Bench Verified
72.5%
Multimodal understanding
MMMU
Timeline
Release gapo1-pro shipped 64 days before Claude Opus 4

Which is better: Claude Opus 4 or o1-pro?

Claude Opus 4 leads o1-pro on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). o1-pro shipped 64 days before Claude Opus 4, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

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 Claude Opus 4 released?
Claude Opus 4 was released by Anthropic on May 22 2025.
When was o1-pro released?
o1-pro was released by OpenAI on Mar 19 2025.

Other comparisons