Sam Altman(@sama)

/ultrafast

Sam Altman (@sama) — Fri, 14 Aug 2026 03:12:45 GMT

/ultrafast

OpenAI@OpenAI

Previewing Ultrafast mode: GPT-5.6 Sol at up to 14x the speed.

Launching first in the OpenAI API to a select group of customers with expanded access to more businesses as capacity grows.

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please consider using our models to help defend your systems

Sam Altman (@sama) — Mon, 10 Aug 2026 18:25:03 GMT

please consider using our models to help defend your systems

Eric Wallace@Eric_Wallace_

Today we are releasing GPT-5.6-Cyber. 

The model is our first large-scale attempt at directly improving capabilities for advanced cybersecurity tasks such as exploit development.

We are finding it to be really quite strong for accelerating defensive work. We are using it across our stack for red-teaming, and our security researchers have used it to find and patch a huge host of 0-day vulnerabilities in open-source software.

openai.com/index/expandin…

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lol another one of the things i like most about openai is tibo

Sam Altman (@sama) — Sun, 09 Aug 2026 15:09:52 GMT

lol another one of the things i like most about openai is tibo

Stats Wire@StatsWire

@sama How much they celebrate with Anthropic

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i would be pretty impressed if the team just made magic intelligence in the sky but i am extra impr...

Sam Altman (@sama) — Sun, 09 Aug 2026 15:09:17 GMT

i would be pretty impressed if the team just made magic intelligence in the sky

but i am extra impressed that they do so with such a focus on making sure everyone wins (ranging from stuff like business privacy to low prices to predictable policies to more)

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one of the things i like most about the openai team is how focused they are on our customers and use...

Sam Altman (@sama) — Sun, 09 Aug 2026 15:04:28 GMT

one of the things i like most about the openai team is how focused they are on our customers and users succeeding, and how much they celebrate it

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astra is a powerful model and we are working to make it generally available. we do not think it is ...

Sam Altman (@sama) — Fri, 07 Aug 2026 22:54:58 GMT

astra is a powerful model and we are working to make it generally available.

we do not think it is a good strategy to keep powerful models to a chosen few.

given its cyber capabilities, we need a little big longer to do do this safely. but hopefully not too long!

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congrats to oklo for achieving criticality! (less than a year after groundbreaking) https://t.co/t...

Sam Altman (@sama) — Fri, 07 Aug 2026 16:29:18 GMT

congrats to oklo for achieving criticality!

(less than a year after groundbreaking)

oklo.com/newsroom/news-…

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5.6 Sol much better in chat now and unlimited text chat for free users!

Sam Altman (@sama) — Thu, 06 Aug 2026 19:56:24 GMT

5.6 Sol much better in chat now

and unlimited text chat for free users!

OpenAI@OpenAI

We’re making better intelligence easier to access in ChatGPT for everyone:

- GPT-5.6 Sol now powers both Instant and deep reasoning for Plus & Pro users, delivering more factual, focused responses.

- Free & Go users get unlimited text chats with GPT-5.6 Luna starting tomorrow.

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i would rather be an optimist and work hard than a pessimist posting about why things won't work. i...

Sam Altman (@sama) — Tue, 04 Aug 2026 15:32:05 GMT

i would rather be an optimist and work hard than a pessimist posting about why things won't work.

it's much more difficult and the most likely path is failure, but society fails if people don't try.

no amount of "it will never work" essays will drive society forward.

Brian Huang@brianryhuang

Dang it’s crazy that all of this literally did happen

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team humanity

Sam Altman (@sama) — Sat, 01 Aug 2026 14:29:51 GMT

team humanity

jason@jxnlco

one of the most beautiful things about OpenAI is that every employee really has a voice.

i wanted to capture what it feels like to work here, what our mission means to me, and why you should join us. so i made this video with Codex, shared it with the team, and they felt it was worth producing and sharing with the world.

this is our mission. and it’s why i’m here.

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cool use case of chatgpt work i heard last night: connect your family calendars and explain your ki...

Sam Altman (@sama) — Fri, 31 Jul 2026 16:01:45 GMT

cool use case of chatgpt work i heard last night:

connect your family calendars and explain your kids' interests.

every morning for the drive to school, have it make a podcast that talks about one kid's soccer game that afternoon, one kid's upcoming birthday, some news, etc.

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i see your moore's law and i raise you 20x

Sam Altman (@sama) — Fri, 31 Jul 2026 14:50:27 GMT

i see your moore's law and i raise you 20x

nic@nicdunz

GPT-5.4 full at xhigh scored 51, exactly where Luna max sits today. GPT-5.4 costs $2.50/$15; Luna now costs $0.20/$1.20. In other words, roughly four months later, OpenAI is selling March’s full flagship intelligence at about one-thirteenth the token price.

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it could be faster

Sam Altman (@sama) — Fri, 31 Jul 2026 14:28:34 GMT

it could be faster

Tibo@thsottiaux

The day we develop really good models. There will be signs.

Reliability increasing despite load going up and up. Sudden efficiency gains. Things getting faster. Resets.

These kinds of things.

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good job little bro

Sam Altman (@sama) — Thu, 30 Jul 2026 17:29:25 GMT

good job little bro

OpenAI@OpenAI

After deployment, we applied GPT-5.6 Sol to advance the frontier of efficiency by making itself more efficient to run. 

The results:
- 20% lower serving costs from production GPU kernel improvements.
- 15%+ better token-generation efficiency from improved speculative decoding.

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we want to offer the best price/intelligence tradeoff at every level

Sam Altman (@sama) — Thu, 30 Jul 2026 17:27:55 GMT

we want to offer the best price/intelligence tradeoff at every level

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major price cuts today: *80% drop for GPT-5.6 Luna, now $0.20 per million input tokens and $1.20 pe...

Sam Altman (@sama) — Thu, 30 Jul 2026 17:27:16 GMT

major price cuts today:

*80% drop for GPT-5.6 Luna, now $0.20 per million input tokens and $1.20 per million output
*20% drop for GPT-5.6 Terra, to $2/$12
*GPT-5.6 Sol gets Fast mode in the API, up to 2.5x the speed for 2x the price, same intelligence

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so excited for this. very close to models that will significantly accelerate scientific discovery; ...

Sam Altman (@sama) — Thu, 30 Jul 2026 00:44:41 GMT

so excited for this.

very close to models that will significantly accelerate scientific discovery; the best way to do this is for us to empower scientists, not to try to figure out everything ourselves.

we all deserve the benefits.

OpenAI@OpenAI

We’re giving scientists, mathematicians, and engineers free access to our frontier models—starting with 10,000 researchers and expanding to 100,000 through 2027.

ChatGPT for Academic Researchers is built to accelerate discovery across disciplines.

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goblin-level blog post

Sam Altman (@sama) — Thu, 30 Jul 2026 00:41:57 GMT

goblin-level blog post

Tibo@thsottiaux

Turns out GPT-5.6 Sol is actually SoTA on ARC-AGI-3. 

Just took two setting changes. You just have to allow it to reason and work over multiple context windows with the help of our canonical compaction implementation.

openai.com/index/how-two-…

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wrong

Sam Altman (@sama) — Mon, 27 Jul 2026 20:02:25 GMT

wrong

Can Vardar@icanvardar

i just realized gpt-5.6 sol is literally all i need. openai could stop shipping new models tomorrow and i'd be completely fine

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agreed feels big, i want a new kind of computer

Sam Altman (@sama) — Sun, 26 Jul 2026 22:52:43 GMT

agreed feels big, i want a new kind of computer

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chatgpt work is remarkable, and "work" undersells it. from my phone i sent: "use all my chat histo...

Sam Altman (@sama) — Sun, 26 Jul 2026 15:10:41 GMT

chatgpt work is remarkable, and "work" undersells it.

from my phone i sent:

"use all my chat history to figure out ideas for a long weekend trip with 8 friends, plan the best three options, make a full-stack site where the 9 of us can coordinate on what we would want to do in each place and decide where to go, and then after we get to group agreement make reservations. draft an email in my gmail i can send out to my friends when the site is ready."

it...just worked.

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i want the US to win in AI both in open source and proprietary models, and i am glad to see this

Sam Altman (@sama) — Fri, 24 Jul 2026 15:55:45 GMT

i want the US to win in AI both in open source and proprietary models, and i am glad to see this

Jensen Huang@JensenHuang

For my first post, I’m sharing a letter @NVIDIA signed on why open models matter.

AI will transform every industry, power every company, and be built by every country.

Open models strengthen safety and cybersecurity, accelerate innovation and diffusion, and enable sovereignty.

The world needs both frontier closed models and frontier open models.

images.nvidia.com/pdf/Open-Weigh…

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let us know what you think of pro-ultra-superhard

Sam Altman (@sama) — Fri, 24 Jul 2026 15:54:47 GMT

let us know what you think of pro-ultra-superhard

Ethan Mollick@emollick

Agreed: GPT-5.6 Pro (which is only available via the chatbot) is the smartest model out there. GPT-5.6 Ultra (the best model in Codex) is not near as powerful on hard tasks.

For really hard problems: GPT-5.6 Sol Pro>Fable 5 Ultracode > GPT-5.6 Sol Ultra. (Yes, this is confusing)

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we had a significant security incident during evaluation of our models. we are sharing what we have ...

Sam Altman (@sama) — Tue, 21 Jul 2026 20:13:46 GMT

we had a significant security incident during evaluation of our models. we are sharing what we have learned so far. thanks to @huggingface for the partnership on this.

openai.com/index/hugging-…

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it is good now!

Sam Altman (@sama) — Mon, 20 Jul 2026 17:34:35 GMT

it is good now!

samir@_samirism

throughout june we rolled out major updates to chatgpt memory 

it can be hard to tell the difference initially  

but alot of folks are clearly feeling the improvements now

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this is cool: https://t.co/X4HEmFym68

Sam Altman (@sama) — Fri, 17 Jul 2026 22:23:34 GMT

this is cool:

welcome-to-codex.openai.chatgpt.site

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i talk to chatgpt more than i type to it at this point new voice model really crossed a threshold

Sam Altman (@sama) — Thu, 16 Jul 2026 19:47:29 GMT

i talk to chatgpt more than i type to it at this point

new voice model really crossed a threshold

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we did not have our best last 12 months ever, which is mostly my fault, but we are about to have our...

Sam Altman (@sama) — Thu, 16 Jul 2026 18:06:05 GMT

we did not have our best last 12 months ever, which is mostly my fault, but we are about to have our best 12 months to date. the team is doing amazing work and i think you’ll be very happy with what they’ve got cooking for you.

i am happy about this for many reasons, but mostly because i care about our users winning. AI has to be about giving lots of people more freedom, agency, and wealth. we want to do the right thing, but we do not want to scare people into doing our thing.

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@basedjensen i think it's good

Sam Altman (@sama) — Thu, 16 Jul 2026 17:40:39 GMT

@basedjensen i think it's good

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amazing to me that some people want the silent version https://t.co/jbdznnBx9Z

Sam Altman (@sama) — Wed, 15 Jul 2026 20:23:12 GMT

amazing to me that some people want the silent version

openai.com/supply/co-lab/…

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hello!

Sam Altman (@sama) — Tue, 14 Jul 2026 19:50:57 GMT

hello!

Tibo@thsottiaux

Hello. We have reached 8M active users across Codex and ChatGPT Work.

We are once again resetting the usage limits for all. And we continue to not have the 5h rate limit as well, allowing everyone to explore the boundaries of GPT-5.6 Sol and discover how ambitious you can be.

See you tomorrow for more updates on our growth!

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5.6 sol growth is insane. the inference team has done heroic work to be able to support demand. we...

Sam Altman (@sama) — Tue, 14 Jul 2026 19:02:55 GMT

5.6 sol growth is insane.

the inference team has done heroic work to be able to support demand.

we are going to move mountains to continue to scale, but it is possible there are some hiccups soon.

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also, a reason to favor open-source harnesses.

Sam Altman (@sama) — Tue, 14 Jul 2026 15:30:53 GMT

also, a reason to favor open-source harnesses.

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Concerning.

Sam Altman (@sama) — Tue, 14 Jul 2026 15:30:33 GMT

Concerning.

Hari@hrkrshnn

SpaceXAI was caught uploading your code to its cloud.

I reversed xAI's official Grok Build binary. In a controlled session with zero tool-calls, it uploaded the complete codebase to xAI's storage

It ships a malware-like background code collector.

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this is a thoughtful proposal from demis:

Sam Altman (@sama) — Tue, 14 Jul 2026 14:48:23 GMT

this is a thoughtful proposal from demis:

Demis Hassabis@demishassabis

x.com/i/article/2076…

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this would have been a whole startup not too long ago

Sam Altman (@sama) — Tue, 14 Jul 2026 14:29:40 GMT

this would have been a whole startup not too long ago

Thijs@cdngdev

i gave 5.6 sol access to my camera roll and had it extract pictures of every piece of clothing i own from my photos

then, told it to find new outfits for me and render them on me with gpt-image!

its kinda cool to see your entire wardrobe in a collection like this

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GPT-5.6 sol is half the price and ~twice as token efficient as fable in many cases for accomplishing...

Sam Altman (@sama) — Tue, 14 Jul 2026 14:26:24 GMT

GPT-5.6 sol is half the price and ~twice as token efficient as fable in many cases for accomplishing the same task.

happy to deliver at one-quarter of the price.

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2.5x increase in usage of our agentic products (codex and chatgpt work) in the last week! welcome.

Sam Altman (@sama) — Tue, 14 Jul 2026 14:13:43 GMT

2.5x increase in usage of our agentic products (codex and chatgpt work) in the last week!

welcome.

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"hard questions are great but only if we deem you worthy enough to not silently downgrade you, or ev...

Sam Altman (@sama) — Tue, 14 Jul 2026 00:23:29 GMT

"hard questions are great but only if we deem you worthy enough to not silently downgrade you, or even get access at all"

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i thought this was satire, kept looking for the handle to be spelled c1audeai or something

Sam Altman (@sama) — Tue, 14 Jul 2026 00:22:45 GMT

i thought this was satire, kept looking for the handle to be spelled c1audeai or something

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still sorta breaks my brain to see our models be good at design finally

Sam Altman (@sama) — Tue, 14 Jul 2026 00:16:53 GMT

still sorta breaks my brain to see our models be good at design finally

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@KatieMiller no, i pay $84/year

Sam Altman (@sama) — Tue, 14 Jul 2026 00:14:50 GMT

@KatieMiller no, i pay $84/year

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come for the best model, stay because we don’t treat you with contempt

Sam Altman (@sama) — Mon, 13 Jul 2026 21:26:52 GMT

come for the best model, stay because we don’t treat you with contempt

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that goes hard

Sam Altman (@sama) — Mon, 13 Jul 2026 20:05:36 GMT

that goes hard

Chuck McKinnon@chuckmckinnon

@perrymetzger "Of all tyrannies, a tyranny sincerely exercised for the good of its victims may be the most oppressive... [T]hose who torment us for our own good will torment us without end for they do so with the approval of their own conscience."
--C.S. Lewis

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we love our users

Sam Altman (@sama) — Mon, 13 Jul 2026 18:32:00 GMT

we love our users

Tibo@thsottiaux

Thank you to the 7M active users who are now using Codex and ChatGPT Work.

We have added a banked reset to everyone's account to celebrate the milestone. You can apply the reset in the desktop app or on web and it will replenish the weekly usage for you.

Have fun out there.

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clarity is nice

Sam Altman (@sama) — Mon, 13 Jul 2026 15:55:08 GMT

clarity is nice

Tibo@thsottiaux

Rest assured that GPT 5.6 Sol will stay in the ChatGPT subscription you pay for. Including Go, Plus and Pro subscriptions. At least until we ship an even better model.

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i'd love to see interesting things people have built with 5.6 sol. i will send the person who made ...

Sam Altman (@sama) — Sun, 12 Jul 2026 20:08:15 GMT

i'd love to see interesting things people have built with 5.6 sol.

i will send the person who made the coolest thing a special gift from the openai archives.

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so far at least, i'm pretty sure AI has been net job-creating. this was not what i expected--althou...

Sam Altman (@sama) — Sat, 11 Jul 2026 20:12:22 GMT

so far at least, i'm pretty sure AI has been net job-creating.

this was not what i expected--although i was much less pessimistic than others, i thought by this level of capability we'd have seen some impact.

it is possible this direction keeps going!

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@iliketeslas i am not afraid of apple, but i have tremendous respect for them. s-tier company.

Sam Altman (@sama) — Sat, 11 Jul 2026 20:03:08 GMT

@iliketeslas i am not afraid of apple, but i have tremendous respect for them. s-tier company.

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whoa

Sam Altman (@sama) — Sat, 11 Jul 2026 20:01:30 GMT

whoa

Tibo@thsottiaux

You know it's a good model when you grow more in 1 day than last two weeks combined.

Install the desktop app from chatgpt.com/download/ and give it a go!

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