When was Claude Opus 4.1 released?

Claude Opus 4.1 was released by Anthropic on Aug 5 2025.

When was GPT-5.2 released?

GPT-5.2 was released by OpenAI on Dec 11 2025.

Which is better on GPQA Diamond, Claude Opus 4.1 or GPT-5.2?

GPT-5.2 scores higher on GPQA Diamond — Claude Opus 4.1 80.9% vs GPT-5.2 92.4%.

Which is better at coding, Claude Opus 4.1 or GPT-5.2?

On SWE-Bench Verified (real-world software-engineering tasks), GPT-5.2 leads — Claude Opus 4.1 scores 74.5% and GPT-5.2 scores 80%.

Home Analytics Contact

Latest Release

Muse Spark

Apr 8 2026

Home/Compare/Claude Opus 4.1 vs GPT-5.2

Claude Opus 4.1 vs GPT-5.2

0 vs 2 benchmarks won

	Anthropic Claude Opus 4.1	OpenAI GPT-5.2
Overview
Company	Anthropic	OpenAI
Release date	Aug 5 2025	Dec 11 2025
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	80.9%	92.4%
Software engineering SWE-Bench Verified	74.5%	80%
Multimodal understanding MMMU	—	—
Timeline
Release gap	Claude Opus 4.1 shipped 128 days before GPT-5.2

Which is better: Claude Opus 4.1 or GPT-5.2?

GPT-5.2 leads Claude Opus 4.1 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude Opus 4.1 shipped 128 days before GPT-5.2, 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.

On GPQA Diamond, GPT-5.2 scores 92.4%, 11.5 points above Claude Opus 4.1 at 80.9%. On SWE-Bench Verified, GPT-5.2 scores 80%, 5.5 points above Claude Opus 4.1 at 74.5%.

Frequently asked questions

When was Claude Opus 4.1 released?: Claude Opus 4.1 was released by Anthropic on Aug 5 2025.
When was GPT-5.2 released?: GPT-5.2 was released by OpenAI on Dec 11 2025.
Which is better on GPQA Diamond, Claude Opus 4.1 or GPT-5.2?: GPT-5.2 scores higher on GPQA Diamond — Claude Opus 4.1 80.9% vs GPT-5.2 92.4%.
Which is better at coding, Claude Opus 4.1 or GPT-5.2?: On SWE-Bench Verified (real-world software-engineering tasks), GPT-5.2 leads — Claude Opus 4.1 scores 74.5% and GPT-5.2 scores 80%.