OpenAI launches GPT-5.4 across ChatGPT, API, and Codex with stronger reasoning, coding, and computer use capabilities.

OpenAI has launched its new ChatGPT 5.4 with Extreme Reasoning mode for long-duration task focus. As well as a 1M-token context window ...

The GPT 5.4 model brings reasoning, coding, and agentic workflows into a single professional-level AI. It's now available ...

It has strong reasoning, but it sometimes answers questions you didn't ask. Formatting and image generation lag behind the text quality. It's a new month, and a new AI version number. It's called ...

OpenAI's ChatGPT 5.3 Instant web search now avoids abrupt tone shifts; in a biking weather example it includes snowpack ...