When was Claude Opus 4.5 released?

Claude Opus 4.5 was released by Anthropic on Nov 24 2025.

When was Gemini 2.5 Pro released?

Gemini 2.5 Pro was released by Google on Mar 25 2025.

Which is better on GPQA Diamond, Claude Opus 4.5 or Gemini 2.5 Pro?

Claude Opus 4.5 scores higher on GPQA Diamond — Claude Opus 4.5 87% vs Gemini 2.5 Pro 86.4%.

Which is better at coding, Claude Opus 4.5 or Gemini 2.5 Pro?

On SWE-Bench Verified (real-world software-engineering tasks), Claude Opus 4.5 leads — Claude Opus 4.5 scores 80.9% and Gemini 2.5 Pro scores 59.6%.

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Claude Opus 4.5 vs Gemini 2.5 Pro

2 vs 1 benchmarks won

	Anthropic Claude Opus 4.5	Google Gemini 2.5 Pro
Overview
Company	Anthropic	Google
Release date	Nov 24 2025	Mar 25 2025
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	87%	86.4%
Software engineering SWE-Bench Verified	80.9%	59.6%
Multimodal understanding MMMU	—	68%
Timeline
Release gap	Gemini 2.5 Pro shipped 244 days before Claude Opus 4.5

Which is better: Claude Opus 4.5 or Gemini 2.5 Pro?

Claude Opus 4.5 leads Gemini 2.5 Pro on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Gemini 2.5 Pro shipped 244 days before Claude Opus 4.5, 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, Claude Opus 4.5 scores 87%, 0.6 points above Gemini 2.5 Pro at 86.4%. On SWE-Bench Verified, Claude Opus 4.5 scores 80.9%, 21.3 points above Gemini 2.5 Pro at 59.6%.

Frequently asked questions

When was Claude Opus 4.5 released?: Claude Opus 4.5 was released by Anthropic on Nov 24 2025.
When was Gemini 2.5 Pro released?: Gemini 2.5 Pro was released by Google on Mar 25 2025.
Which is better on GPQA Diamond, Claude Opus 4.5 or Gemini 2.5 Pro?: Claude Opus 4.5 scores higher on GPQA Diamond — Claude Opus 4.5 87% vs Gemini 2.5 Pro 86.4%.
Which is better at coding, Claude Opus 4.5 or Gemini 2.5 Pro?: On SWE-Bench Verified (real-world software-engineering tasks), Claude Opus 4.5 leads — Claude Opus 4.5 scores 80.9% and Gemini 2.5 Pro scores 59.6%.