When was DeepSeek-V4-Flash released?

DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.

When was Gemini 3.1 Pro released?

Gemini 3.1 Pro was released by Google on Feb 19 2026.

Which is better on GPQA Diamond, DeepSeek-V4-Flash or Gemini 3.1 Pro?

Gemini 3.1 Pro scores higher on GPQA Diamond — DeepSeek-V4-Flash 88.1% vs Gemini 3.1 Pro 94.3%.

Is DeepSeek-V4-Flash or Gemini 3.1 Pro open source?

DeepSeek-V4-Flash is an open-source / open-weight model released by DeepSeek. Gemini 3.1 Pro is a proprietary model released by Google.

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Latest Release

DeepSeek-V4-Pro

Apr 24 2026

Home/Compare/DeepSeek-V4-Flash vs Gemini 3.1 Pro

DeepSeek-V4-Flash vs Gemini 3.1 Pro

0 vs 2 benchmarks won

	DeepSeek DeepSeek-V4-Flash	Google Gemini 3.1 Pro
Overview
Company	DeepSeek	Google
Release date	Apr 24 2026	Feb 19 2026
Model type	—	—
Open source	Yes	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	88.1%	94.3%
Software engineering SWE-Bench Verified	—	80.6%
Multimodal understanding MMMU	—	—
Timeline
Release gap	Gemini 3.1 Pro shipped 64 days before DeepSeek-V4-Flash

Which is better: DeepSeek-V4-Flash or Gemini 3.1 Pro?

Gemini 3.1 Pro leads DeepSeek-V4-Flash on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Gemini 3.1 Pro shipped 64 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 3.1 Pro is proprietary.

On GPQA Diamond, Gemini 3.1 Pro scores 94.3%, 6.2 points above DeepSeek-V4-Flash at 88.1%.

Frequently asked questions

When was DeepSeek-V4-Flash released?: DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.
When was Gemini 3.1 Pro released?: Gemini 3.1 Pro was released by Google on Feb 19 2026.
Which is better on GPQA Diamond, DeepSeek-V4-Flash or Gemini 3.1 Pro?: Gemini 3.1 Pro scores higher on GPQA Diamond — DeepSeek-V4-Flash 88.1% vs Gemini 3.1 Pro 94.3%.
Is DeepSeek-V4-Flash or Gemini 3.1 Pro open source?: DeepSeek-V4-Flash is an open-source / open-weight model released by DeepSeek. Gemini 3.1 Pro is a proprietary model released by Google.