API page lists the knowledge cutoff as Dec 01, 2025 but when prompting the model it says June 2024. Knowledge cutoff: 2024-06 Current date: 2026-04-24 You are an AI assistant accessed via an API.
Can you really believe things that the model says? (A lot of prior model api pages say knowledge cutoffs of June 2024, maybe the model picks that up?)
OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
31–40 of 174 posts
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#32Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#33Enterprise user here and still seeing only 5.4. Yesterday's announcement said that it will take a few hours to roll out to everybody. OpenAI needs better GTM to set the right expectations.
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#34Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#35Is 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.
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#36Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#37BEGIN TRAN;
-- put the query here
commit;
I feel like I haven’t had to prod a model to actually do what I told it to in awhile so that was a shock. I guess that it does use fewer tokens that way, just annoying when I’m paying for the “cutting edge” model to have it be lazy on me like that.
This is in Cursor the model popped up and so I tried it out from the model selector.
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#38API page lists the knowledge cutoff as Dec 01, 2025 but when prompting the model it says June 2024. Knowledge cutoff: 2024-06 Current date: 2026-04-24 You are an AI assistant accessed via an API.
I don't know why this keeps coming up. This has always been the least reliable way to know the cutoff date (and indeed, it may well have been trained on sites with comments like these!) Just ask it about an event that happened shortly before Dec 1, 2025. Sporting event, preferably.
could be they do it intentionally to encourage more tool calls/searches or for tuning reasons
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#39API page lists the knowledge cutoff as Dec 01, 2025 but when prompting the model it says June 2024. Knowledge cutoff: 2024-06 Current date: 2026-04-24 You are an AI assistant accessed via an API.
can u test it on say who won the 2024 US election
A better test is something like "what is the latest version of NumPy?"
Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
#40API page lists the knowledge cutoff as Dec 01, 2025 but when prompting the model it says June 2024. Knowledge cutoff: 2024-06 Current date: 2026-04-24 You are an AI assistant accessed via an API.
The proper way to figure out the real cutoff date is to ask the model about things that did not exist or did not happen before the date in question.
A few quick tests suggest 5.5's general knowledge cutoff is still around early 2025.