When was Claude 3 Opus released?

Claude 3 Opus was released by Anthropic on Mar 4 2024.

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 3 Opus or Gemini 3.0 Flash?

Gemini 3.0 Flash scores higher on GPQA Diamond — Claude 3 Opus 50.4% vs Gemini 3.0 Flash 90.4%.

Which is better at coding, Claude 3 Opus or Gemini 3.0 Flash?

On SWE-Bench Verified (real-world software-engineering tasks), Gemini 3.0 Flash leads — Claude 3 Opus scores 33% and Gemini 3.0 Flash scores 78%.

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Claude 3 Opus vs Gemini 3.0 Flash

0 vs 2 benchmarks won

	Anthropic Claude 3 Opus	Google Gemini 3.0 Flash
Overview
Company	Anthropic	Google
Release date	Mar 4 2024	Dec 17 2025
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	50.4%	90.4%
Software engineering SWE-Bench Verified	33%	78%
Multimodal understanding MMMU	—	—
Timeline
Release gap	Claude 3 Opus shipped 653 days before Gemini 3.0 Flash

Which is better: Claude 3 Opus or Gemini 3.0 Flash?

Gemini 3.0 Flash leads Claude 3 Opus on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude 3 Opus shipped 653 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%, 40 points above Claude 3 Opus at 50.4%. On SWE-Bench Verified, Gemini 3.0 Flash scores 78%, 45 points above Claude 3 Opus at 33%.

Frequently asked questions

When was Claude 3 Opus released?: Claude 3 Opus was released by Anthropic on Mar 4 2024.
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 3 Opus or Gemini 3.0 Flash?: Gemini 3.0 Flash scores higher on GPQA Diamond — Claude 3 Opus 50.4% vs Gemini 3.0 Flash 90.4%.
Which is better at coding, Claude 3 Opus or Gemini 3.0 Flash?: On SWE-Bench Verified (real-world software-engineering tasks), Gemini 3.0 Flash leads — Claude 3 Opus scores 33% and Gemini 3.0 Flash scores 78%.