I don’t think I’ve ever coded 6 hours straight with no break. Wild that we’re here already, and starting to cook Agent 4

Sep 27, 2025 · 11:11 PM UTC

Replying to @amasad
13 hours straight , it will be interesting to study how much was re work and how much is from these 3000+ autonomous actions are optimal …
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Woah. How’s the result?
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Replying to @amasad
I’ve been using Agent3 for a week now, it’s good but i believe there are enhancements to be done, an example: The time spent in testing using computer use is quite high thus increasing the bill price, the agent actually follow certain steps, then an issue occurred in step 5 for example, it fixed it, test it again but with following the same steps while it in many cases go to step 5 directly to see the results are reflected or not, this will decrease the time used in testing and would reduce the bill overall. But overall I liked the behavior and outcomes
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Thanks, will improve
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Replying to @amasad
If someone makes a production application utilizing Replit how big can it really be scaled?
Millions of users shouldn’t be a problem
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Replying to @amasad
eighty bucks is just an insanely good deal
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Replying to @amasad
Good run Amjad 🤣 6 hrs. straight Can lead to back pain of course After many years of these kind of sprints ... learned that something that really does help is swimming Relaxes the back, etc. More than we'd expect
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Replying to @amasad
i still remember the first time i used replit a year ago i was just messing around building a tiny script and it felt like magic because suddenly i could launch something real from my browser no installs no setup just pure creation.since then i became a subscriber and honestly i plan to stay one for many years to come because every month it feels like you guys unlock another layer of the future and now agent 4 is cooking i can already imagine what agent 5 and 6 will look like
Replying to @amasad
Confined psychopathic behavior
Replying to @amasad
Agent 4 is going to be a beast!
Replying to @amasad
Try hiring a human dev and paying him/her $79 for 6 hours of work.
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Replying to @amasad
This is WILD !! $79 for 6.5 hours of nonstop agent coding is cheaper than hiring even one junior dev for a day. Cost curves flip once projects are measured in tokens instead of salaries, and managers will chase that math. Enterprises won’t care if it’s 1,648 actions or 76k lines touched, they’ll see predictable spend per feature shipped. This makes procurement treat - engineering like cloud hosting - unitized, budgeted, and ruthlessly optimized.
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Replying to @amasad
Agent 4! 🤯 I’m still recovering from the Agent 3 excitement
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Replying to @amasad
i frequently code 14 hours straight with no break i know it's not good for me but i honestly don't really understand ppl who need lots of breaks (most ppl)
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Replying to @amasad
I I sent a video overview of an app. I built for a small consulting company to a friend who owns number of businesses and realized that what I built could apply to him. I took that information and immediately started building a new app.@Replit yesterday afternoon for him. By midnight, I had the new app into a good enough form to make a short overview video of his app and because I have known this guy for 30 years and have helped him run businesses and helped him buy businesses. I was able to take all that knowledge and really customize even the first MVP with so much more detail and the output absolutely looks much stronger even at this early stage however, when I got to that point, I did the video and I tied it up to email to him, but there was one part missing and I knew it was a more major alteration, but it was really critical to the First app and I really wanted it to show it that way to him in the second app and so I spoke to reps plan mode, which is just fantastic and discussed what I wanted to do and then worked out a few of the kinks in my head and then I turned on Bill and I just let it go out and I saw it just working and I could see where it was attacking the problem and I could see that it was evolving right in front of my eyes and then about 30 minutes in maybe I don’t even remember that long it just kept it just seemed to be having some issues that it was having a hard time fixing so I left and got something to eat and came back and it was still in that same place and early on when I started using Replit I would get stuck here and I would have to just trash the whole thing or I it would take some real work so again at midnight, I just went to bed as it was continuing to work obviously and not knowing what to expect not like a little kid on Christmas, but pretty close I got up andfound out that it had worked through and gotten it done. It was spectacular.
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Replying to @amasad
Seriously? That’s what I used to call a Tuesday
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Replying to @amasad
Users when Agent 4 drops
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GIF
Replying to @amasad
This is insane. Proving people wrong that said AI can’t be use to build complex systems.
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Replying to @amasad
Can we see what it actually coded for 6 hours?
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Replying to @amasad
Turn it off and go touch grass bruh
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Replying to @amasad
We're building the future.
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Replying to @amasad
😲😲😲
Replying to @amasad
Wow I thought that my 1 hour run testing Agent 3 was special 😅
Replying to @amasad
What would 4 do better or more effective then 3?
Replying to @amasad
Why’s my agent never taking longer than couple of minutes? Are my prompts stupid
Replying to @amasad
Blitzy does much longer.
Replying to @amasad
Same here - built my agents in marathon sessions like that. The flow state is unreal when AI removes the friction.
Replying to @amasad
🔥🔥🔥 Agent 3 is great, I'm using it constantly. Very flexible if you know what to ask for.
Replying to @amasad
24 hours will be both a practical and psychological milestone