When was Claude Opus 4.5 released?

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

When was Gemini 3.0 Flash released?

Gemini 3.0 Flash was released by Google on Dec 17 2025.

Which is better on GPQA Diamond, Claude Opus 4.5 or Gemini 3.0 Flash?

Gemini 3.0 Flash scores higher on GPQA Diamond — Claude Opus 4.5 87% vs Gemini 3.0 Flash 90.4%.

Which is better at coding, Claude Opus 4.5 or Gemini 3.0 Flash?

On SWE-Bench Verified (real-world software-engineering tasks), Claude Opus 4.5 leads — Claude Opus 4.5 scores 80.9% and Gemini 3.0 Flash scores 78%.

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Claude Opus 4.5 vs Gemini 3.0 Flash

1 vs 1 benchmarks won

	Anthropic Claude Opus 4.5	Google Gemini 3.0 Flash
Overview
Company	Anthropic	Google
Release date	Nov 24 2025	Dec 17 2025
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	87%	90.4%
Software engineering SWE-Bench Verified	80.9%	78%
Multimodal understanding MMMU	—	—
Timeline
Release gap	Claude Opus 4.5 shipped 23 days before Gemini 3.0 Flash

Which is better: Claude Opus 4.5 or Gemini 3.0 Flash?

Claude Opus 4.5 and Gemini 3.0 Flash are evenly matched across the benchmarks they both publish. Claude Opus 4.5 shipped 23 days before Gemini 3.0 Flash, 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, Gemini 3.0 Flash scores 90.4%, 3.4 points above Claude Opus 4.5 at 87%. On SWE-Bench Verified, Claude Opus 4.5 scores 80.9%, 2.9 points above Gemini 3.0 Flash at 78%.

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 3.0 Flash released?: Gemini 3.0 Flash was released by Google on Dec 17 2025.
Which is better on GPQA Diamond, Claude Opus 4.5 or Gemini 3.0 Flash?: Gemini 3.0 Flash scores higher on GPQA Diamond — Claude Opus 4.5 87% vs Gemini 3.0 Flash 90.4%.
Which is better at coding, Claude Opus 4.5 or Gemini 3.0 Flash?: On SWE-Bench Verified (real-world software-engineering tasks), Claude Opus 4.5 leads — Claude Opus 4.5 scores 80.9% and Gemini 3.0 Flash scores 78%.