Claude 2 vs o1-pro
Anthropic Claude 2 | OpenAI o1-pro | |
|---|---|---|
| Overview | ||
| Company | Anthropic | OpenAI |
| Release date | Jul 11 2023 | Mar 19 2025 |
| Access | Proprietary | Proprietary |
| Timeline | ||
| Release gap | Claude 2 shipped 617 days before o1-pro | |
Which is better: Claude 2 or o1-pro?
Claude 2 and o1-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 2 shipped 617 days before o1-pro, 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 — Claude 2 and o1-pro don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude 2 was released by Anthropic on Jul 11 2023.
o1-pro was released by OpenAI on Mar 19 2025.