Today, we’re releasing GPT‑5.4 in ChatGPT (as GPT‑5.4 Thinking), the API, and Codex . It’s our most capable and efficient frontier model for professional work. We’re also releasing GPT‑5.4 Pro in ChatGPT and the API, for people who want maximum performance on complex tasks. Native computer-use capa…

The tool_search looks very interesting: [image] Tool search | OpenAI API Use tool search to defer large tool surfaces, group related tools with namespaces, and load only the relevant functions at runtime.

The missing rows of “pricing”: Model Input Cached input Output gpt-5.4 (<272k context length) $2.50 $0.25 $15.00 gpt-5.4-pro (<272k context length) $30.00 $180.00 gpt-5.4 (>272k context length) $5.00 $0.50 $22.50 gpt-5.4-pro (>272k context length) $60.00 $270.00 Large context is …

Buzzing since gpt-5.4 dropped. Wrote a companion post to highlight the details that matter when you start building with gpt-5.4 [image] GPT-5.4 deep dive: pricing, context limits, and tool search explained API The announcement covers the headlines well. This is…

Leader juuuuuuuuuuuuuuhuuuuuuuuuuuu :face_blowing_a_kiss:

Impressive. I still need to take a closer look at the new “desktop work”, possibly through the Agent Mode !? (ah, seems to be now in Codex too ~~~), but even at this stage the model already seems far …. far more capable than the average office worker (> 99,9 %). I have not seen any flaws so far. We…

I’m really hoping for Codex 5.5.

Wow, that’s amazing! Congratulations!

As always, Serge is late a couple of days (weeks, months, years). But this is pretty good stuff. I’ve just gave it a couple of my concept files which normally make opus 4.6 boil apart, but surprisingly, this little beast hold tight and mean. Brilliant analysis despite intentionally weak and lazy pro…

GPT-5.4 Pro and Thinking are here!

Announcements

PaulBellow Split this topic April 3, 2026, 12:33pm 30

A post was merged into an existing topic: Feedback on GPT-4.1, GPT-4.5 and GPT-5.1

Topic		Replies	Views
Prompting GPT-5 is different API gpt-5	12	13182	September 9, 2025
GPT 4.1 Degradation over the past 30 days API gpt-41	42	4180	April 14, 2026
Need "reasoning: false" option for GPT-5 ✅ Update: GPT-5.1 solves reasoning issue Feedback gpt-5 , responses-api	22	11977	November 28, 2025
5.4 thinking is too much sensetive Forum feedback chatgpt , gpt-5	8	337	April 17, 2026
GPT-4.5 is live in the API! Announcements	153	20971	July 17, 2025

GPT-5.4 Pro and Thinking are here!

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