Tool Calling on 梦兽编程https://rexai.top/en/tags/tool-calling/Recent content in Tool Calling on 梦兽编程Hugo -- 0.163.3en梦兽编程Mon, 27 Jul 2026 22:30:00 +0800Newer Claude Models Are Worse at Using Your Tools: An Engineering Trap of RL Training Backfirehttps://rexai.top/en/posts/2026-07-28-better-models-worse-tools/Mon, 27 Jul 2026 22:30:00 +0800https://rexai.top/en/posts/2026-07-28-better-models-worse-tools/Armin discovered that Opus 4.8 and Sonnet 5 are actually more error-prone than older models when calling Pi's custom editing tool — because RL training overfits them to Claude Code's built-in tools. This is a wake-up call for every third-party coding harness.