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Claude Sonnet 4.5 vs Code Llama

3 vs 0 benchmarks won

Anthropic
Claude Sonnet 4.5
Meta
Code Llama
Overview
CompanyAnthropicMeta
Release dateSep 29 2025Aug 24 2023
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
83.4%
Software engineering
SWE-Bench Verified
77.2%
Multimodal understanding
MMMU
68%
Timeline
Release gapCode Llama shipped 767 days before Claude Sonnet 4.5

Which is better: Claude Sonnet 4.5 or Code Llama?

Claude Sonnet 4.5 leads Code Llama on 3 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Code Llama shipped 767 days before Claude Sonnet 4.5, so benchmark comparisons should account for the intervening progress.

Code Llama is an open-source / open-weight model; Claude Sonnet 4.5 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 4.5 released?
Claude Sonnet 4.5 was released by Anthropic on Sep 29 2025.
When was Code Llama released?
Code Llama was released by Meta on Aug 24 2023.
Is Claude Sonnet 4.5 or Code Llama open source?
Code Llama is an open-source / open-weight model released by Meta. Claude Sonnet 4.5 is a proprietary model released by Anthropic.

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