When was Claude 3.5 Sonnet released?

Claude 3.5 Sonnet was released by Anthropic on Jun 20 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 3.5 Sonnet or Gemini 3.0 Flash?

Gemini 3.0 Flash scores higher on GPQA Diamond — Claude 3.5 Sonnet 59.4% vs Gemini 3.0 Flash 90.4%.

Which is better at coding, Claude 3.5 Sonnet or Gemini 3.0 Flash?

On SWE-Bench Verified (real-world software-engineering tasks), Gemini 3.0 Flash leads — Claude 3.5 Sonnet scores 33.4% and Gemini 3.0 Flash scores 78%.

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Home/Compare/Claude 3.5 Sonnet vs Gemini 3.0 Flash

Claude 3.5 Sonnet vs Gemini 3.0 Flash

0 vs 2 benchmarks won

	Anthropic Claude 3.5 Sonnet	Google Gemini 3.0 Flash
Overview
Company	Anthropic	Google
Release date	Jun 20 2024	Dec 17 2025
Model type	—	—
Open source	No	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	59.4%	90.4%
Software engineering SWE-Bench Verified	33.4%	78%
Multimodal understanding MMMU	—	—
Timeline
Release gap	Claude 3.5 Sonnet shipped 545 days before Gemini 3.0 Flash

Which is better: Claude 3.5 Sonnet or Gemini 3.0 Flash?

Gemini 3.0 Flash leads Claude 3.5 Sonnet on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude 3.5 Sonnet shipped 545 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%, 31 points above Claude 3.5 Sonnet at 59.4%. On SWE-Bench Verified, Gemini 3.0 Flash scores 78%, 44.6 points above Claude 3.5 Sonnet at 33.4%.

Frequently asked questions

When was Claude 3.5 Sonnet released?: Claude 3.5 Sonnet was released by Anthropic on Jun 20 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 3.5 Sonnet or Gemini 3.0 Flash?: Gemini 3.0 Flash scores higher on GPQA Diamond — Claude 3.5 Sonnet 59.4% vs Gemini 3.0 Flash 90.4%.
Which is better at coding, Claude 3.5 Sonnet or Gemini 3.0 Flash?: On SWE-Bench Verified (real-world software-engineering tasks), Gemini 3.0 Flash leads — Claude 3.5 Sonnet scores 33.4% and Gemini 3.0 Flash scores 78%.