# Introducing Claude 3.5 Sonnet

Source: https://www.anthropic.com/news/claude-3-5-sonnet
Published: 2024-06-21
Status: unreviewed source report

## Source excerpt (up to 25 words)

> Introducing Claude 3.5 Sonnet—our most intelligent model yet. Sonnet now outperforms competitor models and Claude 3 Opus on key evaluations, at twice the speed.

## Review question

Inspect benchmark version, contamination controls, sample size, held-out tasks, adversarial failures and scoring rules. Higher scores alone do not establish lower production risk.

No independent proof check or claim of peer review.