GPT-5.5: ‘strongest agentic coding model ever’ failing spectacularly at its own game (LiveBench)
Oops! "GPT‑5.5 is our strongest agentic coding model to date." "The gains are especially strong in agentic coding." "Instead of carefully managing every step, you can give GPT‑5.5 a messy, multi-part task and trust it to…