making ai 2027 real - tryreplicas.com (yc p26)

Joined October 2023
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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.
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The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: anthropic.com/news/fable-myt…
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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
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Connor Loi retweeted
Fable 5 is now generally available in @tryreplicas!
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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
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Connor Loi retweeted
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!
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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 :)
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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!
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in the future i wonder if my day will just be 100% staring at slack
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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.
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Upvote us on Product Hunt! producthunt.com/products/rep… What's new in V2: → Automations & API. Trigger agents from Slack, Sentry, Linear, GitHub, cron, or any webhook. Teams automate E2E testing, code review, and pen testing on top of us. → Environments. Warm pool infra from the ground up, fully customizable across dependencies, MCPs, skills, system prompts, and secrets. → Computer Use. Agents drive a Linux desktop and close the loop on product tickets with screenshots and recordings.
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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:
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Connor Loi retweeted
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.
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Connor Loi retweeted
🤖 @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!
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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
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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 🥲
first week in san francisco ✔︎ > arrived on sunday and toured stanford campus > started at @vercel ▲ on tuesday > pushed my first pr on wednesday > biked to see the seals 🦭 so far sf has been amazing! super excited to work with all the GOATS at @vercel and continue doing fun stuff
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Connor Loi retweeted
I told @tryreplicas to update our logo on github and this is what it responded with, along with a video uploading it
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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
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Opus 4.8 is now available in @tryreplicas ! We also are very fond of Dynamic Workflows, so that's coming soon 👀
May 28
Introducing Claude Opus 4.8: it builds on Opus 4.7 with sharper judgment, more honesty about its own progress, and the ability to work independently for longer than its predecessors. Available today at the same price.
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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
hey everyone! i'm daniel - 1st year cs @UWaterloo - currently swe intern at @slashapp - 20x hackathon winner - back-to-back finalist at canada's largest hackathon - 100 github stars with an AI sketch to animation tool - top 99.5 percentile in multiple national math contests - researched brain MRI segmentation at 16 - #1 kpop fan new to twitter, but will be posting more about tech, life, and larping. just landed in sf recently, hmu if you want to connect!
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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 👇
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