GPT-5.5 - https://news.ycombinator.com/item?id=47879092 - April 2026 (1010 comments)
OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
developers.openai.com
OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
1–10 of 174 posts
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#2Faster than anticipated because of Deepseek release?
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#3Faster than anticipated because of Deepseek release?
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Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#4Is anyone here actually using pro models through the API? I'd be very curious what the use-case is.
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#5Huh. Yesterday they said:
>API deployments require different safeguards and we are working closely with partners and customers on the safety and security requirements for serving it at scale.
And now this. I guess one day counts as "very soon." But I wonder what that meant for these safeguards and security requirements.
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#6Huh. Yesterday they said: >API deployments require different safeguards and we are working closely with partners and customers on the safety and security requirements for serving it at scale. And now this. I guess one day counts as "very soon." But I wonder what that meant for these safeguards and security requirements.
The same person who've mercilessly lied about safety is still running the company, so not sure why anyone would expect any different from them moving forward. Previous example:
> In 2023, the company was preparing to release its GPT-4 Turbo model. As Sutskever details in the memos, Altman apparently told Murati that the model didn’t need safety approval, citing the company’s general counsel, Jason Kwon. But when she asked Kwon, over Slack, he replied, “ugh . . . confused where sam got that impression.”
Lots of cases where Altman hass not been entirely forthcoming about how important (or not) safety is for OpenAI. https://www.newyorker.com/magazine/2026/04/13/sam-altman-may... (https://archive.is/a2vqW)
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#7Huh. Yesterday they said: >API deployments require different safeguards and we are working closely with partners and customers on the safety and security requirements for serving it at scale. And now this. I guess one day counts as "very soon." But I wonder what that meant for these safeguards and security requirements.
I wonder if the fact that GPT-5.5 was already available in their Codex-specific API which they had explicitly told people they were allowed to use for other purposes - https://simonwillison.net/2026/Apr/23/gpt-5-5/#the-openclaw-... - accelerated this release!
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#8Is anyone here actually using pro models through the API? I'd be very curious what the use-case is.
Yes? The same reason you would use it via the tooling.
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#9not available for Github Copilot pro(only in pro+, business and enterprise), I am really now feeling the era of subsidized AI is over.
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#10Is anyone here actually using pro models through the API? I'd be very curious what the use-case is.
Yes. High value work where cost (mostly) doesn't matter. For example, if I need to look over a legal doc for possible mistakes (part of a workflow i have), it doesn't matter (in my case) whether it costs $0.01 or $10.00, since it's a somewhat infrequent event. So i'll pay $9.99 more, even if the model is only slightly better.