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DeepSeek V2.5 vs Gemini 3.0 Flash

0 vs 2 benchmarks won

DeepSeek
DeepSeek V2.5
Google
Gemini 3.0 Flash
Overview
CompanyDeepSeekGoogle
Release dateSep 2024Dec 17 2025
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
90.4%
Software engineering
SWE-Bench Verified
78%
Multimodal understanding
MMMU
Timeline
Release gapDeepSeek V2.5 shipped 472 days before Gemini 3.0 Flash

Which is better: DeepSeek V2.5 or Gemini 3.0 Flash?

Gemini 3.0 Flash leads DeepSeek V2.5 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). DeepSeek V2.5 shipped 472 days before Gemini 3.0 Flash, so benchmark comparisons should account for the intervening progress.

DeepSeek V2.5 is an open-source / open-weight model; Gemini 3.0 Flash is proprietary.

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 DeepSeek V2.5 released?
DeepSeek V2.5 was released by DeepSeek on Sep 2024.
When was Gemini 3.0 Flash released?
Gemini 3.0 Flash was released by Google on Dec 17 2025.
Is DeepSeek V2.5 or Gemini 3.0 Flash open source?
DeepSeek V2.5 is an open-source / open-weight model released by DeepSeek. Gemini 3.0 Flash is a proprietary model released by Google.

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