01 
Sam Altman
Sam Altman
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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Follow builders, not influencers.
2026.07.13
25+ builders tracked
BUILDER INSIGHTS 15
02 
Thibault Sottiaux OpenAI
Thibault Sottiaux
Updates for Codex and ChatGPT Work users. No nerfing, only good stuff!
- We have landed inference optimizations and are passing down savings to all the subscriptions for GPT-5.6 Sol. That should result in around 10% more usage on its own.
- We noticed that by changing the context size limit in the product to 372k for GPT-5.6 Sol, up from 272k for GPT-5.5, it resulted in more usage being charged than intended. We have reverted to 272k and will work to roll back out to 372k in the days to come. You should notice that usage drains significantly less after this change.
- To understand where the extra usage was coming from, we ran some experiments where reasoning efforts were changed (referred to as juice values under the hood) and have reverted this.
- There is slightly more usage of multi-agent than intended in high and xhigh reasoning effort, we are fixing this going forward. Also fixing a small other thing we noticed with auto-review where we can be more efficient.
And we continue to have the 5h limit temporarily not apply. Enjoy the rest of the weekend!
Team, Edu, ... and any other paid subscription too. Quite simple really.
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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04 
Claude anthropicai
Claude
As before, you can use up to half of your weekly usage limit on Fable 5. After that, you can continue using Fable 5 with usage credits, or switch to another model to keep working within your remaining limits.
More details here: https://t.co/5inr3k2VM5
We're extending Claude Fable 5 access on all paid plans, as well as keeping Claude Code’s weekly rate limits 50% higher, through July 19.
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05
06 
Guillermo Rauch CEO, vercel
Guillermo Rauch
Make the model a cog in a machine you own.
◾ AI SDK → open model API
◾ https://t.co/O7y9dmUqk5 → open Agent API
◾ AI Gateway → open ZDR inference
Startups and enterprises must own their data, evals, model choices, software layer. Don't outsource your brain. https://t.co/EpiBG1GD59
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07 
Aaron Levie CEO, box
Aaron Levie
One of the key architectural questions of the 21st century in business will be how you maximize your corporate IP in the form of decisions, insights, workflow patterns, and best practices in a world where so much intelligence is packed into AI models.
One might think these questions could just get bitter lessoned out of existence, but in reality they become even more germane as intelligence becomes more powerful. In a world where any firm also has access to frontier intelligence, understanding how you leverage it uniquely becomes a critical question.
That’s why so much value is left to be created between the enterprise and the underlying AI itself. Having evals for your workflows, ensuring that you can route models from different tiers of intelligence, capturing traces in a way that improve your own workflows, and making sure the value of your information compounds as AI gets better all become critical considerations.
Which is also why there’s so much opportunity right now in the applied AI layer. The companies that help figure this out for other enterprises will be in the best position to win the next enterprise workloads.
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08 
Nikunj Kothari Partner, fpvventures
Nikunj Kothari
What’s funny is I’ll meet so many people in SF who’ll claim they are tokenmaxxing and have all of these subagents looping things for them..
But when I ask them “what” and for “whom” are they building, very few can give me a straight answer.
Shows that even in this insane AI era, simplicity and direction are still ridiculously important.
So before you let your tokens go brrr, take some time to think if what you’re building (for a living) is actually important.
Time is literally the only thing you don’t get back!
Reminder to get out if you haven’t on this gorgeous day! https://t.co/NrvyXPpeLy
There’s nothing more humbling than outbound sales.
Like any skill, it’s learnable.
But man, when you see the really great ones do it, you can’t help but walk away a bit envious.
Going to be even more important as time progresses!
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10 
Amjad Masad CEO, replit
Amjad Masad
Fun to see Replit's computer use model play against my new chess engine https://t.co/SQmN4NamlR https://t.co/INdb7rojHU
Vibe Research
Fine-tuning a Qwen-8b model to play chess on Replit. Running 3 parallel branches with different experiments and making real progress.
It's amazing how far models have come in their ability to do ML (they used to be really bad at it). So now someone with good intuition to guide the process could do interesting ML work, even if they have never done it before.
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12 
Garry Tan CEO, ycombinator
Garry Tan
Craven politicians who disable public safety technology for virtue signal and culture war purposes will always get blood on their hands https://t.co/TPydLBqavh
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15 
Peter Yang
Peter Yang
Seeing this quite often today.
My wild guess is 90%+ of people are using GPT 5.6 Sol and <10% are using Terra or Luna. https://t.co/uiCunQ1sLK
There's a tendancy when community sentiment turns to communicate less and in a more corporate way.
I think it's important to do the reverse - communicate in a more human way, be transparent with the community about what's going on, figure out solutions together, etc.
Anthropic makes great models too but I don't understand why they communicate like this.
I think they need to engage the community more directly like what OpenAI is doing. https://t.co/BqYu5FglYV
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