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Claude Sonnet 4 vs LLaMA 2

2 vs 0 benchmarks won

Anthropic
Claude Sonnet 4
Meta
LLaMA 2
Overview
CompanyAnthropicMeta
Release dateMay 22 2025Jul 18 2023
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
75.4%
Software engineering
SWE-Bench Verified
72.7%
Multimodal understanding
MMMU
Timeline
Release gapLLaMA 2 shipped 674 days before Claude Sonnet 4

Which is better: Claude Sonnet 4 or LLaMA 2?

Claude Sonnet 4 leads LLaMA 2 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). LLaMA 2 shipped 674 days before Claude Sonnet 4, so benchmark comparisons should account for the intervening progress.

LLaMA 2 is an open-source / open-weight model; Claude Sonnet 4 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 Sonnet 4 released?
Claude Sonnet 4 was released by Anthropic on May 22 2025.
When was LLaMA 2 released?
LLaMA 2 was released by Meta on Jul 18 2023.
Is Claude Sonnet 4 or LLaMA 2 open source?
LLaMA 2 is an open-source / open-weight model released by Meta. Claude Sonnet 4 is a proprietary model released by Anthropic.

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