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Claude 3 Sonnet vs DeepSeek Chat (R1-based)

1 vs 0 benchmarks won

Anthropic
Claude 3 Sonnet
DeepSeek
DeepSeek Chat (R1-based)
Overview
CompanyAnthropicDeepSeek
Release dateMar 4 2024Jan 20 2025
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
40.4%
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapClaude 3 Sonnet shipped 322 days before DeepSeek Chat (R1-based)

Which is better: Claude 3 Sonnet or DeepSeek Chat (R1-based)?

Claude 3 Sonnet leads DeepSeek Chat (R1-based) on 1 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude 3 Sonnet shipped 322 days before DeepSeek Chat (R1-based), so benchmark comparisons should account for the intervening progress.

DeepSeek Chat (R1-based) is an open-source / open-weight model; Claude 3 Sonnet 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 3 Sonnet released?
Claude 3 Sonnet was released by Anthropic on Mar 4 2024.
When was DeepSeek Chat (R1-based) released?
DeepSeek Chat (R1-based) was released by DeepSeek on Jan 20 2025.
Is Claude 3 Sonnet or DeepSeek Chat (R1-based) open source?
DeepSeek Chat (R1-based) is an open-source / open-weight model released by DeepSeek. Claude 3 Sonnet is a proprietary model released by Anthropic.

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