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

Home/Compare/Claude 2.1 vs o1

Claude 2.1 vs o1

Anthropic Claude 2.1 vs OpenAI o1 — side-by-side specs.

Anthropic
Claude 2.1
OpenAI
o1
Overview
CompanyAnthropicOpenAI
Release dateNov 21 2023Dec 5 2024
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapClaude 2.1 shipped 380 days before o1

Which is better: Claude 2.1 or o1?

Claude 2.1 and o1 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Claude 2.1 shipped 380 days before o1, 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 2.1 released?
Claude 2.1 was released by Anthropic on Nov 21 2023.
When was o1 released?
o1 was released by OpenAI on Dec 5 2024.

Other comparisons