Top AI Product

So OpenAI went ahead and [released GPT-5.4](https://openai.com/index/introducing-gpt-5/) on March 5th — literally one day after GPT-5.3 Instant rolled out to everyone. That kind of pacing is wild, and naturally the internet lost its mind. My feeds on [Hacker News](https://news.ycombinator.com/) and Twitter/X were flooded within hours, and both [Axios](https://www.axios.com/2026/03/05/openai-gpt-54-chatgpt-office) and [TechCrunch](https://techcrunch.com/) picked it up immediately. Even [llm-stats.com](https://llm-stats.com/) had it as the headline story by midday.

Here’s what actually matters though. GPT-5.4 ships with a one-million-token context window, which is a massive jump from the 400K tokens we had with GPT-5.2. That alone changes how you can work with long documents, entire codebases, or multi-hour research sessions. But the real headline feature is the new “extreme thinking” mode — basically the model can spend significantly more compute time chewing on hard problems before responding. OpenAI is positioning this mostly for scientific research and complex professional work rather than casual chat, which honestly makes sense.

The benchmark numbers are impressive if you trust benchmarks. On OpenAI’s GDPval test — which measures performance across 44 real-world occupations — GPT-5.4 beat human office workers on 83% of tasks. Take that with however much salt you like, but having used it for a few hours now, the improvement on multi-step tasks is noticeable. It makes fewer dumb mistakes when you throw long, complicated workflows at it, and it seems to hold context much better across steps.

The practical stuff might be what gets the most traction though. OpenAI added tools that let GPT-5.4 work directly inside Excel and Google Sheets. If you spend your days wrestling with spreadsheets, that’s genuinely useful. They’ve also improved memory across workflows, so it actually remembers what you asked it to do three steps ago instead of going blank.

What strikes me most is the pace. GPT-5.3 Instant one day, GPT-5.4 the next — OpenAI is clearly feeling the pressure from Anthropic and Google and they’re shipping fast to stay ahead. Whether this speed is sustainable or if we’re going to see some rough edges, I guess we’ll find out soon enough.