# I Tested Claude Sonnet 5 vs Opus 4.8

> Source: <https://pub.towardsai.net/i-tested-claude-sonnet-5-vs-opus-4-8-b6dfa27596c3?source=rss----98111c9905da---4>
> Published: 2026-07-01 07:18:06+00:00

A midsize model is not supposed to embarrass the flagship. But when I ran Anthropic’s brand-new Claude Sonnet 5 against Opus 4.8 and the…
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