GPT‑5.5 Instant

Discussion (9 Comments)Read Original on HackerNews

simianwords•about 2 hours ago

I wonder what's the difference between this and GPT 5.5 thinking with zero thinking effort? Interesting product decision to have different models.

pants2•about 2 hours ago

Good question. I find that GPT-5.5 thinking is very good at not thinking for simple questions, so much so that I've never had the need to use the instant model even for quick Q&A.

I'm assuming the instant model, then, is an entirely different smaller model mainly serving the free tier of ChatGPT.

simianwords•about 2 hours ago

It is an entirely free model, but it is also the model that most users (even paid) interact with until the router pushes the thinking.

while_true_•28 minutes ago

Correct. I have the $20/month plan and I just checked, the default is 5.3-instant. I can manually switch it to Thinking is 5.5. I also have it set to auto-switch.

pants2•about 1 hour ago

Good point. I feel like this does a disservice to ChatGPT -- IIRC even the free tier of Claude points you to Sonnet 4.6 by default, which is magnitudes better than 5.3-instant which has been the default in ChatGPT.

Hence most users will immediately think Claude is smarter, even if their best models are on par.

jflskajfsd•about 2 hours ago

Big increase in intelligence at the cheapest price

lkt•18 minutes ago

Is it cheap? `chat-latest` on https://developers.openai.com/api/docs/pricing is showing $5/$30 input/output which is the same price as gpt-5.5

pants2•about 2 hours ago

I don't see price listed anywhere, do you? This isn't even on their models page yet.

tngranados•about 2 hours ago

Looks like it gives more readable answer, hopefully it does, the regular free ChatGPT modal right now is insufferable.

dude250711•about 2 hours ago

Nice, something actually usable and at an affordable price.

GPT‑5.5 Instant

⚡ Community Insights

Discussion (9 Comments)Read Original on HackerNews