OpenAI has once again retired its dedicated Codex coding model, folding its capabilities directly into the main model. GPT-5.5 promises stronger agentic coding and lower token usage, OpenAI says.

OpenAI says developers shouldn't carry over old prompts for GPT-5.5. Instead, start minimal and from scratch. Role definitions, which some had written off as unnecessary, are back at the front of the framework.

GPT-5.5 pushes OpenAI back to the top of the AI benchmarks. The price went up, but it still looks like the best bang for your buck among proprietary models.

A new benchmark puts top models like GPT-5.4 and Claude Opus 4.6 to work on the kinds of tasks junior investment bankers handle every day. Not a single AI output was rated ready to send to a client; the results are too imprecise or flat-out wrong. Still, more than half of the bankers said they'd use the output as a starting point.

The popular story goes that AI agents are swallowing up more programming work and developers are headed for obsolescence. A new paper from researchers at Chalmers University of Technology and the Volvo Group argues that view misses the mark.