IBM Engineer Explains Agent Harness: Making GPT-3.5 Actually Deliver

IBM engineer Tejas Kumar explains how a hand-written agent harness with six components lets GPT-3.5 Turbo drive a Playwright browser to complete real tasks—without changing the prompt—turning fake success into real success.

2026-09-14 ~ 2026-09-14 · 3 related posts

• Harness engineering explained: 6 components that took GPT-3.5 from faking success to real success — TejasKumar_ · 2026-09-14
• Agent Harness Lessons: Every Fix for GPT-3.5 Turbo Was Code, Not a Prompt — tejaskumarlol · 2026-09-14
• Building an Agent Harness From Scratch: GPT-3.5 Turbo Goes From False 'Done' to Real One, Prompt Untouched — tejaskumarlol · 2026-09-14