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Claude 3.5 Sonnet vs Gemini 2.5 Flash Image

2 vs 0 benchmarks won

Anthropic
Claude 3.5 Sonnet
Google
Gemini 2.5 Flash Image
Overview
CompanyAnthropicGoogle
Release dateJun 20 2024Aug 26 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
59.4%
Software engineering
SWE-Bench Verified
33.4%
Multimodal understanding
MMMU
Timeline
Release gapClaude 3.5 Sonnet shipped 432 days before Gemini 2.5 Flash Image

Which is better: Claude 3.5 Sonnet or Gemini 2.5 Flash Image?

Claude 3.5 Sonnet leads Gemini 2.5 Flash Image on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude 3.5 Sonnet shipped 432 days before Gemini 2.5 Flash Image, 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.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

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 2.5 Flash Image released?
Gemini 2.5 Flash Image was released by Google on Aug 26 2025.

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