I joined Y Combinator with 14 users, building a dev tool for myself. Then @SaaiArora joined as CTO, and we started growing and shipping 2x faster. It forced us to rebuild product and infra from the ground up for teams, not solo devs. We are ending the batch with >300k agent minutes per week, and teams like @mintlify, @knowunity, and @modaflows shipping through Replicas every day. Today we're launching Replicas V2.

atp i'm convinced this is all a prank, claude-3.5-sonnet was secretly good enough this whole time and we've just been getting ragebaited for 12 months

Fable 5 is now generally available in @tryreplicas!

the day we changed our logo we suddenly got a bunch of investor and customer inbound starting to wonder how much we got bottlenecked because I slopped this in canva 5 months ago this was our old one

some reflections from solely using cloud agents this year: 1. every engineer should default to cloud. it completely changes how you view and use agents. if you run a company, it might be worth mandating everyone starts in cloud 2. cloud agent adoption has been much slower than i expected— e.g. looking at a ton of cursor profiles it’s clear majority cloud usage is still rare 3. getting your dx cloud agent ready still requires creative jiu jitsu. dev infra docs could be much better — “this is how to make our stuff accessible to agents/parallelizable.” luckily investments also benefit humans 4. it’s still a PITA to setup & manage cloud envs across cursor/devin etc. but i assume it’ll get bitter lessoned and we don’t need conventions for setup scripts etc. 5. where are the labs?! would love to see codex et al. invest more in their cloud experience. i know they can do it :) 6. it’s strange that cursor/devin’s investment in mobile apps lags behind their investment in cloud agents. they should go hand in hand. the ability to start agents from slack mobile isn’t enough! 7. a cloud agent spinning up other cloud agents (middle manager pattern) is goated. e.g. nice to go for a run, yap for twenty minutes, and end up with parallel agents. only devin supports this well 8. the uis of ADEs have somewhat adapted for cloud agents. but ui patterns for upcoming long running *and* proactive agents are understudied. super excited to see more experiments here (and will contribute) overall: i freaking love cloud agents. you’ll dissappoint me personally if next month you still spin up more local agents than cloud. very grateful for cursor and devin for making this technology so easy to use!

Small milestone: @tryreplicas crossed 1M agent minutes toda I think we'll be at 2M in a few weeks, but looking back on the work it took to get here is very rewarding :)

Replicas now has access to a Canvas where it can show you plans, HTML reports, and media. Here it is in action telling me about the Knicks vs Spurs!

in the future i wonder if my day will just be 100% staring at slack

Whenever Replicas takes a screenshot using Computer Use, it now gives to you in cleanshot/screen studio-style! here was a screenshot it took playing the Ubuntu Star Wars:

We’ve replaced the codex sdk with the app server protocol; this allows us to better integrate with the codex harness. I’ve been using the /goal command a lot with gpt 5.5, and it’s been a game changer. Try it out in replicas.

🤖 @tryreplicas is a platform to run any coding agent harness in the cloud. Customers like Mintlify and Composio use agents inside Replicas' infrastructure to autonomously write and test code, without getting locked into a single harness like Devin or Cursor. They just crossed 1 million agent minutes on the platform, with usage growing 40% week over week! tryreplicas.com @connortbot and @SaaiArora are Waterloo CS dropouts who built agent infrastructure at Cohere, Shopify, and Helicone. I've gotten the chance to get to know Connor throughout the batch and he is the perfect founder to be building this. @pioneer_fund is excited to be along for the ride!

every couple weeks I bump up the disk GB on Replicas agents and go “yup, that’s more than enough” then some customer pings me asking for 2x more? so I gotta ask our sandboxing provider for more limits, and their poor engineer has to explain to me that performance will be “unpredictable” meanwhile I don’t even know how or why they need so much

I was supposed to be at @vercel this summer until I got into YC I regret nothing but these tweets do give me FOMO. In another/next life I hope I can experience working with the amazing ppl there congrats Josh 🥲

I told @tryreplicas to update our logo on github and this is what it responded with, along with a video uploading it

Replicas now leaves this table on your pull requests showing all the CI/CD checks that it fixed probably better than the comments it used to spam

Opus 4.8 is now available in @tryreplicas ! We also are very fond of Dynamic Workflows, so that's coming soon 👀

this guy tweeted this and now everything in my timeline is some other UW kid doing the same thing i wonder if we were always like this

We added multimodal output for Claude Code and Codex! (kinda) Replicas can now show you videos, images, or audios rendered inline - before uploading it to a library for you to look at. Take a look 👇