Honestly at this point I just want to know if it follows complex instructions better than 5.1. The benchmark numbers stopped meaning much to me a while ago - real usage always feels different.

Sorry I don't use technology from companies that are eager to participate in the mass murder of civilians.

Is this the best one for blowing up arab children and identifying their bodies in the rubble?

An important feature is the introduction of tool search, which provides models with a "lightweight list of available tools along with a tool search capability", thereby Making MCP Great Again!

> When toggled on, /fast mode in Codex delivers up to 1.5x faster token velocity with GPT‑5.4. It’s the same model and the same intelligence, just faster.

I hate these blog posts sometimes. Surely there's got to be some tradeoff. Or have we finally arrived at the world's first "free lunch"? Otherwise why not make /fast always active with no mention and no way to turn it off?

Not a single comparison between 5.4 and Gemini or Claude. OpenAI continues to fall further behind.

Benchmarks barely improved it seems

Quick: let's release something new that gives the appearance that we're still relevant