Anthropic 发布 Claude Sonnet 5，更便宜但能力不均衡

Today’s edition of my newsletter just went out.

🔗 https://www.rohan-paul.com/p/anthropic-brings-out-claude-sonnet

🗞️ Anthropic brings out Claude Sonnet 5 as a cheaper model for running agents.

🗞️ OPINION: Mapping the Foundation Model Landscape: July 2026

🗞️ Claude Sonnet 5 upgrades are not uniform across every skill. e.g. its weaker than Sonnet 4.6 on CyberGym

🗞️ Claude Sonnet 5 is more expensive (around +15%) per task than Opus 4.8 and much more expensive (2X) than Sonnet 4.6, even though its per-token price is lower than Opus.

🗞️ Claude Code allegedly fingerprints China-linked custom routes through tiny prompt formatting changes.

🗞️ “Are We Ready For An Agent-Native Memory System?”

🗞️ “Towards Automating Scientific Review with Google’s Paper Assistant Tool”