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DeepSeek-V4-Flash vs Gemini 2.5 Pro

1 vs 2 benchmarks won

DeepSeek
DeepSeek-V4-Flash
Google
Gemini 2.5 Pro
Overview
CompanyDeepSeekGoogle
Release dateApr 24 2026Mar 25 2025
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
88.1%
86.4%
Software engineering
SWE-Bench Verified
59.6%
Multimodal understanding
MMMU
68%
Timeline
Release gapGemini 2.5 Pro shipped 395 days before DeepSeek-V4-Flash

Which is better: DeepSeek-V4-Flash or Gemini 2.5 Pro?

Gemini 2.5 Pro leads DeepSeek-V4-Flash on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Gemini 2.5 Pro shipped 395 days before DeepSeek-V4-Flash, so benchmark comparisons should account for the intervening progress.

DeepSeek-V4-Flash is an open-source / open-weight model; Gemini 2.5 Pro is proprietary.

On GPQA Diamond, DeepSeek-V4-Flash scores 88.1%, 1.7 points above Gemini 2.5 Pro at 86.4%.

Frequently asked questions

When was DeepSeek-V4-Flash released?
DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.
When was Gemini 2.5 Pro released?
Gemini 2.5 Pro was released by Google on Mar 25 2025.
Which is better on GPQA Diamond, DeepSeek-V4-Flash or Gemini 2.5 Pro?
DeepSeek-V4-Flash scores higher on GPQA Diamond — DeepSeek-V4-Flash 88.1% vs Gemini 2.5 Pro 86.4%.
Is DeepSeek-V4-Flash or Gemini 2.5 Pro open source?
DeepSeek-V4-Flash is an open-source / open-weight model released by DeepSeek. Gemini 2.5 Pro is a proprietary model released by Google.

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