Sam Altman(@sama)

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

🔗 View Quoted Tweet

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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!

🔗 View Quoted Tweet

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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…

🔗 View Quoted Tweet

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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

Your browser does not support the video tag.

🔗 View on Twitter

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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

Claude@claudeai

There’s hope in hard questions.

Your browser does not support the video tag.

🔗 View on Twitter

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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.

🔗 View Quoted Tweet

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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.

🔗 View Quoted Tweet

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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!

🔗 View Quoted Tweet

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"physicians found fewer flaws in GPT-5.6 responses than physician-written responses."

Sam Altman (@sama) — Sat, 11 Jul 2026 16:46:22 GMT

"physicians found fewer flaws in GPT-5.6 responses than physician-written responses."

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there are a lot of benchmarks that suggest 5.6 sol is the best model in the world right now, but the...

Sam Altman (@sama) — Sat, 11 Jul 2026 16:39:53 GMT

there are a lot of benchmarks that suggest 5.6 sol is the best model in the world right now, but the most reliable way to tell is that elon is obsessed with me again

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30% of the cost was on fable at these levels of usage?

Sam Altman (@sama) — Sat, 11 Jul 2026 16:37:28 GMT

30% of the cost was on fable at these levels of usage?

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homeboy you're the one sellling public market investors on short-term space datacenters

Sam Altman (@sama) — Sat, 11 Jul 2026 16:36:40 GMT

homeboy you're the one sellling public market investors on short-term space datacenters

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GPT-5.6 is now the preferred model in Microsoft 365 Copilot https://t.co/r2B3EJuV1A

Sam Altman (@sama) — Fri, 10 Jul 2026 14:18:13 GMT

GPT-5.6 is now the preferred model in Microsoft 365 Copilot

openai.com/index/gpt-5-6-…

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makes us happy to see people love 5.6 sol so much!

Sam Altman (@sama) — Fri, 10 Jul 2026 13:55:24 GMT

makes us happy to see people love 5.6 sol so much!

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the sun is out today

Sam Altman (@sama) — Fri, 10 Jul 2026 13:52:53 GMT

the sun is out today

Tibo@thsottiaux

To celebrate the launch of GPT-5.6 Sol, we will reset the rate limits again (twice) across ChatGPT Work and Codex over the next 24 hours.

We want you to have the time to truly try ambitious tasks and get the hang of it. Happy exploring!

🔗 View Quoted Tweet

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@gabriel1 if you send me a really nice bottle of wine, deal

Sam Altman (@sama) — Fri, 10 Jul 2026 13:46:34 GMT

@gabriel1 if you send me a really nice bottle of wine, deal

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i am really sad about this and very grateful for all fidji has done for openai, and even grateful fo...

Sam Altman (@sama) — Thu, 09 Jul 2026 23:01:28 GMT

i am really sad about this and very grateful for all fidji has done for openai, and even grateful for her friendship and who she is as a person.

we all wish her the best for a speedy recovery. this sucks.

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check this out! you can get some amazing things done. codex is the core of our new work product and...

Sam Altman (@sama) — Thu, 09 Jul 2026 18:59:31 GMT

check this out! you can get some amazing things done.

codex is the core of our new work product and what makes it so good. codex is not going anywhere.

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we have heard enterprises on their concerns about AI costs, and 5.6 sol is a huge step forward for d...

Sam Altman (@sama) — Thu, 09 Jul 2026 17:13:51 GMT

we have heard enterprises on their concerns about AI costs, and 5.6 sol is a huge step forward for dollars-per-task, as are terra and luna

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obviously the best model we have ever produced, but also one of the best blog posts we have ever pro...

Sam Altman (@sama) — Thu, 09 Jul 2026 17:10:58 GMT

obviously the best model we have ever produced, but also one of the best blog posts we have ever produced:

openai.com/index/gpt-5-6/

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5.6 livestream going now. in addition to the model, 3 major product things. 1. ChatGPT Work--reall...

Sam Altman (@sama) — Thu, 09 Jul 2026 17:02:39 GMT

6 livestream going now.

in addition to the model, 3 major product things.

ChatGPT Work--really big deal!
new ChatGPT desktop app
hosted sites

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what a good video

Sam Altman (@sama) — Thu, 09 Jul 2026 04:03:26 GMT

what a good video

OpenAI@OpenAI

Introducing GPT-Live, a new generation of voice models for natural human-AI interaction.

Rolling out in ChatGPT starting today.

You’ll want to turn the sound on for this one.

Your browser does not support the video tag.

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tbh i dont think sol gets that many dates either

Sam Altman (@sama) — Thu, 09 Jul 2026 03:44:28 GMT

tbh i dont think sol gets that many dates either

Mitchell Hashimoto@mitchellh

I had early access to 5.6/Sol for ~month. Sol is my default. It is faster, plans/judges just as good as Fable, and I think produces better overall work. I’ll reach for Fable still for highly targeted debug or performance work with clear reward functions. 

A cheeky way I describe Sol vs Fable to my friends is that Sol is a charismatic, efficient, talented coworker you’re jealous of. Fable is a genius recluse that is brilliant at its fixations but doesn’t go out, doesn’t date, and you don’t want to hang out with them much lol.

Fable is undefeated at highly targeted debug/security/performance goals. It’s a sight to behold and I was never able to get Sol to push as hard in this category. I’ll keep using it for this.

Sol is better or comparable at everything else, in my experience. Give it a shot, it’s hard to describe but it’s just more enjoyable to work with. 

(Disclaimer I have no financial ties to either lab, wasn’t paid for any of this.)

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it surely doesnt

Sam Altman (@sama) — Thu, 09 Jul 2026 02:43:07 GMT

it surely doesnt

eric@ericlim

5.6 solves depression

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🫶

Sam Altman (@sama) — Thu, 09 Jul 2026 02:42:46 GMT

🫶

dax@thdxr

i've never hyped a model release, we're generally conservative with how we use these things

but gpt-5.6 has had a massive impact on our team, we're using 5x the tokens as we used to

it's not even smarter than fable or anything, but it's just so reliable and fun to use

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i do love rottweilers

Sam Altman (@sama) — Thu, 09 Jul 2026 02:41:50 GMT

i do love rottweilers

Peter Gostev@petergostev

My view of: Fable 5 vs GPT-5.6-Sol. They are not easy models to compare, these are my vibes - take them as you will. 

My overall feel is that Fable is a 'wise owl' who is very thoughtful and very well spoken, GPT-5.6-Sol is like a rottweiler who will grab the problem by the throat and not let go until it is done.

In other words, Fable, is a fundamentally smarter model - even at low reasoning it can be very insightful and writes in a clear compelling way. GPT-5.6-Sol on the other hand is extremely diligent, I can give it a list of 8 things to do and you will be sure that they will be done.

Fable feels more arrogant to me, I was both to get it to build a new benchmark for me - 5.6 worked between 6 hours and 2 days (I tried several times) and it came up with very thoroughly tested, working benchmark. Fable came back within 40 minutes (twice) and the benchmark sounded smart, but was ultimately was 'vibe' based slop and since it was Fable's vibes that was doing the judging, it decided that it was good to go (it kept giving Fable 100% score btw).

Some thoughts by category:

UI & App building: Fable will still craft a better UI from scratch, the flow of the app would probably be a bit nicer. But I find that Fable often misses quite key things, which GPT-5.6-Sol doesn't. GPT's Frontend skills are big jump vs previous GPT models, but still not as great overall.

Writing: Fable is better hands down, Sol feels quite difficult to align to what I want to say or explain things to me simply. Though I think the 'Pro' model writes clearer. 

Robustness & Reliability: This is where I think GPT-5.6-Sol wins for me hands down. Fable seems to do things of high quality, but I can never relax with it, it always misses something. With 5.6 this just almost never happens.

Other things where I liked GPT-5.6-Sol, but can't compare to Fable directly.
 - Video editing is actually working now, it is not completely perfect, but with the right skill/guidance you can just give it 1h footage and it can give you a 5 min highlight clip no problem
 - Computer use - getting really rather good, very usable
 - Sub agents - it is very fluent at managing sub-agents and speaking to different threads, can help with some new workflows
 - Adhering to existing code patterns - I love this, even without asking it would implement something in a way that aligns with you app - major problem for slop generation
 - Research - I think it is getting quite a bit better, it still has some bad patterns (e.g being too tactical), but it feels like it is more steerable to be a good researcher 
 - Multi-day runs - the /goal feature is pretty insane with 5.6-Sol, you can run it for days if you wanted to and it does work. Useful to have another thread or /side to check up on it, but I have some great results with it
 - Token efficiency - it is so much more token efficient and faster than 5.5, in reality it is now much faster than Fable too

On the downside, you can feel that Fable is naturally smarter, and I did have some baffling moments with 5.6 when I was getting it to make a fairly simple change in 8 turns - it seemed to get stuck in a dumb stream that was hard to get out of. So it is not AGI, don't get too carried away by the hype. 
 
I have some phenomenal examples that I'm honestly blown away by that I'll share, but as a side anecdote, I have a kind of 'swear meter' which counts how often I'm rude to Codex. In GPT-5.5 era, the % was at around 4-5%, it dropped to 1-2% when I was testing GPT-5.6-Sol and it shot up to 7% when I went back to 5.5 - it was so shocking to go back to 5.5 and experience how much worse it was. 

So is GPT-5.6-Sol better than Fable? On pure intelligence - no. But man, I missed it when I just wanted to get sh*t done. It is insanely capable workhorse that you can give any task to and just expect it to be done. No lectures or 'you are absolutely rightisms', nothing is beneath it, if it takes 2 days to do some dirty work, it will do it.

It feels like the first time in a while when we have quite different types of frontier intelligences that benchmark sort of similarly, but feel very different. If you can, you would be probably better off using both and iteratively finding what you'd use Fable or GPT-5.6-Sol for. Perhaps, something like - an architectural discussion with Fable, implementation with 5.6 and docs & comms with Fable.

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GPT-live (next-generation voice) launches today in ChatGPT. it feels magical and 'real'. i have al...

Sam Altman (@sama) — Wed, 08 Jul 2026 17:30:49 GMT

GPT-live (next-generation voice) launches today in ChatGPT.

it feels magical and 'real'.

i have always preferred typing to talking to an AI, now i think that's going to shift.

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GPT-5.6 sol launches thursday! happy building

Sam Altman (@sama) — Wed, 08 Jul 2026 04:15:52 GMT

GPT-5.6 sol launches thursday!

happy building

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our older kid put two words together for the first time and i am approximately as amazed by this cog...

Sam Altman (@sama) — Sun, 05 Jul 2026 15:30:37 GMT

our older kid put two words together for the first time and i am approximately as amazed by this cognitive feat as i am by GPT-5.6 discovering new math

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they really nailed it with "life, liberty, and the pursuit of happiness"

Sam Altman (@sama) — Sun, 05 Jul 2026 05:12:04 GMT

they really nailed it with "life, liberty, and the pursuit of happiness"

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grateful to the people that created the idea of america, everyone who built it over the past 250 yea...

Sam Altman (@sama) — Sun, 05 Jul 2026 05:11:42 GMT

grateful to the people that created the idea of america, everyone who built it over the past 250 years, and the people who will carry it forward for the next 250.

most impressive social experiment in history.

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