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Comments (85)

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  heaney-555
  Giving free ChatGPT users access to reasoning (the 'Think' toggle) will have a broader impact on the world than every new paid model and coding agent combined.
• firasd
  I think it’s a misread to think the default ChatGPT model switching to GPT 5.6 Luna is some sort of desperation move. Keep in mind that Claude .ai never had this extreme stratification between the frontier models and the free tier (Sonnet is available to free users with rate limits).So 5.6 Luna is just their next version of what they used to call 5.5 instant tierAnd 5.x instant models were never much to write home about anyway so the default ChatGPT free model hasn’t been particularly distinctive since 4o
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  ilaksh
  > Our mission is to ensure that artificial general intelligence benefits all of humanity. We’re introducing updates to ChatGPT that improve everyday conversations while expanding access for Free users.This clearly implies that they believe ChatGPT models are AGI and are now willing to say it out loud.Which I think is a fair interpretation of the term. They are general purpose intelligence in that you can get help from them about almost anything. They are not like narrow single purpose AI models.I don't think we need that term to mean "can completely emulate a human" or "can do every task any human on earth can do as well as them".It also needs to be differentiated from ASI with godlike powers many times greater than human.
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  ElijahLynn
  I can't wait to never see a reasoning button ever again. Why do I have to reason about what reasoning level to use?
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  colingauvin
  They must really be feeling the commoditization pressure. I'm not sure what the way out of this is, ChatGPT and Claude are still good products, but they are not necessarily premium products anymore.I expect a few things to happen in the next year:1) Exclusive MCP server deals/API integrations2) Significant switch to B2B marketing, even moreso than we've seen before, with API interfaces being paid and chat-client interfaces becoming more and more free, perhaps just with limits more on integrations or data visualization/analysis3) US restrictions on B2B contracts with non-US hosted models that do any sort of contracting with the governmentObviously there's a bunch of stuff I'm not foreseeing. But it really does feel like the bottom of the market is collapsing into free. I assume OpenAI and Anthropic think their next generation of models will restore their halo tier status and that the cash burn is justified to just get there, but this has to really mess up IPO plans.
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  simonw
  Nothing in the ChatGPT model release notes yet: https://help.openai.com/en/articles/9624314-model-release-no...(This is a subtle nudge at anyone from OpenAI who reads this to make sure they get updated.)OpenAI have a model called "chat-latest" - I wonder if that's running this new model yet: https://developers.openai.com/api/docs/models/chat-latestIt's described as "points to the latest Instant model currently used in ChatGPT" - so presumably that's "GPT-5.6 Instant" in the app.
• saithound
  While their math results are impressive, vibe coding their own web UIs with their subpar design models is really going to backfire if their plan is to attract new users with better free model offerings.The Aug 6 update has forced the entry box to auto-format Markdown in an attempt to imitate Claude. The implementation is buggy and even simple copy-and-paste has gone entirely haywire. They also forgot to leave a switch to turn the confounded autoformatting thing off.Chat mode in general is currently crawling with more UX bugs than a porch screen in summer.
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  kingstnap
  Its always fun to try to read between the lines here to speculate why they are doing this.Maybe Luna efficiency gain was actually significant enough that putting all the free users and giving them super generous limits makes sense.They might be doing this to improve the messaging of AI among causal users since right now there is a huge amount of datacenter backlash in the US due to AI grievances.Maybe they have too much excess capacity or they really want to juice token numbers and market share on their dashboards for marketing.I also wonder if being given access to an actually a decent model like luna with actual thinking budget instead of brainless "instant" modes will start to make causal users understand the real capabilities of these models.
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  tosh
  free unlimited luna is a pretty badass moveluna is very good
• kgeist
  >avoid extra detail when it does not helpI wonder if they actually do it to optimize inference. I maintain a corporate AI server and one of the tricks to reduce the load was to modify the system prompt to be as terse as possible so the average response completes faster and requests queue up less often.
• sunaookami
  This is actually a downgrade for free users since currently it uses GPT-5.5 for a few messages before it drops you down to GPT-5.5-mini. Now it always uses a model worse than Mini (Luna is nano-equivalent, "It roughly corresponds to the nano model tier used in earlier GPT-5 families." https://developers.openai.com/api/docs/models/gpt-5.6-luna ). I guess it's a bit better with Thinking though. They should use Terra for a few messages first before dropping down to Luna. And image inputs are still limited.
• OsamaJaber
  Expanding free access is mostly an inference costServing cheaply at that scale means routing, batching, and cache hits, not a better model :D
• applfanboysbgon
  > Our mission is to ensure that artificial general intelligence benefits all of humanity. We’re introducing updates to ChatGPT that improve everyday conversations while expanding access for Free users.My mission is world conquest. I'm writing a comment on an HN thread.No, those two clauses have no relation whatsoever. I just felt like saying the first sentence because it sounded cool.
• Squarex
  Why pay for ChatGPT Go then?
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  ignoramous
  Every week, 1 billion people turn to ChatGPT for everything from quick questions and web searches to planning, research, advice, and complex decisions. Guess, Google's AI Mode is chipping away at their consumers (I know I haven't used Chat in a long, long while for 'quick questions and web searches' after OpenAI did away with "think" which I always use). The money-minting office & coding market Anthropic has cornered is hyper-competitive at both the frontier & low-cost ends. OpenAI is reactive [0] and seems right up against it, despite the strength of its excellent models.[0] Won't put it past OpenAI (and/or Google) to open weight larger models!
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  simianwords
  Does 5.6 Sol finally have an "instant" form? Is that the change?
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  jauntywundrkind
  At first I thought the Sol updates was perhaps trying to help with some complaints of Sol burning through tokens, complaints that have prompted some new data points on https://codex-resets.com/ .But seeing the graphic with the visual weather report: that makes me think that is not the goal at all. :)
• aniceperson
  a m-dash in the title? whoa things are degrading fast
• porridgeraisin
  I dont pay for a chatgpt subscription, but sometimes I did use the web app for throwaway questions. GPT 5.5 Instant or whatever it was that they had was absolutely horrendous. Never answered a question straight and was pedantic in a way even a redditor wouldn't be. So I dropped it and just opened my paid coding agent for everything. Grok.com is quite good now with grok 4.5 though and I find myself using that often. Hopefully luna will be similar.