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Claude 3 Opus vs DeepSeek-V4-Flash

1 vs 1 benchmarks won

Anthropic
Claude 3 Opus
DeepSeek
DeepSeek-V4-Flash
Overview
CompanyAnthropicDeepSeek
Release dateMar 4 2024Apr 24 2026
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
50.4%
88.1%
Software engineering
SWE-Bench Verified
33%
Multimodal understanding
MMMU
Timeline
Release gapClaude 3 Opus shipped 781 days before DeepSeek-V4-Flash

Which is better: Claude 3 Opus or DeepSeek-V4-Flash?

Claude 3 Opus and DeepSeek-V4-Flash are evenly matched across the benchmarks they both publish. Claude 3 Opus shipped 781 days before DeepSeek-V4-Flash, so benchmark comparisons should account for the intervening progress.

DeepSeek-V4-Flash is an open-source / open-weight model; Claude 3 Opus is proprietary.

On GPQA Diamond, DeepSeek-V4-Flash scores 88.1%, 37.7 points above Claude 3 Opus at 50.4%.

Frequently asked questions

When was Claude 3 Opus released?
Claude 3 Opus was released by Anthropic on Mar 4 2024.
When was DeepSeek-V4-Flash released?
DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.
Which is better on GPQA Diamond, Claude 3 Opus or DeepSeek-V4-Flash?
DeepSeek-V4-Flash scores higher on GPQA Diamond — Claude 3 Opus 50.4% vs DeepSeek-V4-Flash 88.1%.
Is Claude 3 Opus or DeepSeek-V4-Flash open source?
DeepSeek-V4-Flash is an open-source / open-weight model released by DeepSeek. Claude 3 Opus is a proprietary model released by Anthropic.

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