Rohan Paul@rohanpaul_ai · XAnthropic 推出 Claude Sonnet 5，定位为运行 AI 智能体的更便宜模型。但其升级不均匀，在 CyberGym 基准上弱于 Sonnet 4.6。每任务成本比 Opus 4.8 高约 15%，比 Sonnet 4.6 高 2 倍，每 token 价格低于 Opus。此外，Claude Code 被指控通过微小提示格式变化指纹中国路由。本期 newsletter 还讨论了“智能体原生记忆系统”和“谷歌论文助手工具自动化科学审稿”。
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.