When was Claude Opus 4.6 released?

Claude Opus 4.6 was released by Anthropic on Feb 5 2026.

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 4.6 or GPT-5.2?

GPT-5.2 scores higher on GPQA Diamond — Claude Opus 4.6 91.3% vs GPT-5.2 92.4%.

Which is better at coding, Claude Opus 4.6 or GPT-5.2?

On SWE-Bench Verified (real-world software-engineering tasks), Claude Opus 4.6 leads — Claude Opus 4.6 scores 80.8% and GPT-5.2 scores 80%.

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Claude Opus 4.6 vs GPT-5.2

1 vs 1 benchmarks won

	Anthropic Claude Opus 4.6	OpenAI GPT-5.2
Overview
Company	Anthropic	OpenAI
Release date	Feb 5 2026	Dec 11 2025
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	91.3%	92.4%
Software engineering SWE-Bench Verified	80.8%	80%
Multimodal understanding MMMU	—	—
Timeline
Release gap	GPT-5.2 shipped 56 days before Claude Opus 4.6

Which is better: Claude Opus 4.6 or GPT-5.2?

Claude Opus 4.6 and GPT-5.2 are evenly matched across the benchmarks they both publish. GPT-5.2 shipped 56 days before Claude Opus 4.6, 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%, 1.1 points above Claude Opus 4.6 at 91.3%. On SWE-Bench Verified, Claude Opus 4.6 scores 80.8%, 0.8 points above GPT-5.2 at 80%.

Frequently asked questions

When was Claude Opus 4.6 released?: Claude Opus 4.6 was released by Anthropic on Feb 5 2026.
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 4.6 or GPT-5.2?: GPT-5.2 scores higher on GPQA Diamond — Claude Opus 4.6 91.3% vs GPT-5.2 92.4%.
Which is better at coding, Claude Opus 4.6 or GPT-5.2?: On SWE-Bench Verified (real-world software-engineering tasks), Claude Opus 4.6 leads — Claude Opus 4.6 scores 80.8% and GPT-5.2 scores 80%.