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Claude 3 Sonnet vs Gemini 3.0 Flash

0 vs 2 benchmarks won

Anthropic
Claude 3 Sonnet
Google
Gemini 3.0 Flash
Overview
CompanyAnthropicGoogle
Release dateMar 4 2024Dec 17 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
40.4%
90.4%
Software engineering
SWE-Bench Verified
78%
Multimodal understanding
MMMU
Timeline
Release gapClaude 3 Sonnet shipped 653 days before Gemini 3.0 Flash

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

Gemini 3.0 Flash leads Claude 3 Sonnet on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude 3 Sonnet 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%, 50 points above Claude 3 Sonnet at 40.4%.

Frequently asked questions

When was Claude 3 Sonnet released?
Claude 3 Sonnet 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 Sonnet or Gemini 3.0 Flash?
Gemini 3.0 Flash scores higher on GPQA Diamond — Claude 3 Sonnet 40.4% vs Gemini 3.0 Flash 90.4%.

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