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Claude Opus 4.6 vs DeepSeek V3 Base

2 vs 0 benchmarks won

Anthropic
Claude Opus 4.6
DeepSeek
DeepSeek V3 Base
Overview
CompanyAnthropicDeepSeek
Release dateFeb 5 2026Dec 2024
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
91.3%
Software engineering
SWE-Bench Verified
80.8%
Multimodal understanding
MMMU
Timeline
Release gapDeepSeek V3 Base shipped 431 days before Claude Opus 4.6

Which is better: Claude Opus 4.6 or DeepSeek V3 Base?

Claude Opus 4.6 leads DeepSeek V3 Base on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). DeepSeek V3 Base shipped 431 days before Claude Opus 4.6, so benchmark comparisons should account for the intervening progress.

DeepSeek V3 Base is an open-source / open-weight model; Claude Opus 4.6 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 Claude Opus 4.6 released?
Claude Opus 4.6 was released by Anthropic on Feb 5 2026.
When was DeepSeek V3 Base released?
DeepSeek V3 Base was released by DeepSeek on Dec 2024.
Is Claude Opus 4.6 or DeepSeek V3 Base open source?
DeepSeek V3 Base is an open-source / open-weight model released by DeepSeek. Claude Opus 4.6 is a proprietary model released by Anthropic.

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