Teddy Citrin
@tcitrin
Definition @cognition, @decagonai, @modal, @privy_io, @rox_ai, @tldraw, @tryramp, @togethercompute
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We rebuilt Devin for Claude Sonnet 4.5. Available starting today as an Agent Preview that’s over 2x faster and 12% better on our Jr. Developer Evals.
We've raised our Series B! We’re excited to grow our team and continue building AI-native infrastructure to power the next generation of applications. Thank you to our investors, the Modal team, and our community 💚 axios.com/pro/enterprise…
6 months, 25 million revenue agents & 3 trillion tokens later... Rox is now globally available 🌎 Just as coding agents 10x’d engineering, revenue agents 10x customer work. With Rox, humans are evolving to orchestrators while agents manage the end-to-end customer lifecycle.…
Modal's goal has always been to build an entire suite of tools for building ML/AI applications, starting with the compute layer. We're launching Notebooks today. It leverages our powerful Modal infrastructure to startup up GPU-backed kernels in seconds, and much more. Try it…
We're thrilled to share Modal Notebooks: a new, powerful cloud-hosted GPU notebook. It has modern real-time collaborative editing and is backed by our AI infrastructure — swap GPUs in seconds. Modal Notebooks are generally available, and you can start using them now. 🧵
We're thrilled to share Modal Notebooks: a new, powerful cloud-hosted GPU notebook. It has modern real-time collaborative editing and is backed by our AI infrastructure — swap GPUs in seconds. Modal Notebooks are generally available, and you can start using them now. 🧵
Big milestone for @tryramp: the cover of Fortune. Grateful for our customers, team, and everyone helping us build what’s next.
Five years ago, @tryramp launched its first product. Last month, we crossed $1B in annualized revenue—while generating free cash flow. Banks sell money. Ramp sells something different: time. Grateful to @leomschwartz and @packym for two of the most extraordinary deep dives yet
When we started Cognition, we were a small group of engineers who shared a lifelong love of coding. We hunkered down in an apartment in NYC and built the product we always wanted for ourselves. A lot has changed over the last 20 months but the core vision has not. We see a…
We’ve raised over $400M at a $10.2B post-money valuation to advance the frontier of AI coding agents. The round was led by Founders Fund with other existing investors including Lux, 8VC, Neo, Elad Gil, Definition Capital, and Swish VC all doubling down. We’re also joined by new…
We’ve raised over $400M at a $10.2B post-money valuation to advance the frontier of AI coding agents. The round was led by Founders Fund with other existing investors including Lux, 8VC, Neo, Elad Gil, Definition Capital, and Swish VC all doubling down. We’re also joined by new…
Exclusive: Fintech startup Ramp hits $1 billion in annualized revenue after notching $22.5 billion valuation | Fortune fortune.com/2025/09/04/ram…
Ramp made the Forbes Cloud 100 for the second year in a row, this time at lucky #6! Grateful for @Forbes and @BessemerVP for recognizing our team's velocity, and our 40,000+ customers who trust us with their financial operations every day.
☁️ Big news: Together AI has made the 2025 Forbes Cloud 100! This list recognizes the world’s top privately-held cloud companies and we’re thrilled to be included 🏆
Maths savant turned @cognition founder @ScottWu46 joins me to discuss their AI software engineer, acquiring Windsurf over a weekend, the Moneyball-ification of everything, math contests with @alexandr_wang in 6th grade, the future of independent coding tools, and why he thinks we…
from big idea → forbes’ next billion-dollar startups 2025. 🚀 just getting started.
People have asked about our culture and recent employee communications. Cognition has an extreme performance culture, and we’re upfront about this in hiring so there are no surprises later. We routinely are at the office through the weekend and do some of our best work late into…
Today, @tryramp raised $500M at a $22.5B valuation. Finance is at an inflection point. How does an industry change? Gradually, then suddenly. Decades where nothing happens; months where decades happen. Now, we’re teaching software to think like people. Exciting times…
To put it mildly, the past week at Windsurf has been crazy. There have been a lot of different rumors and reports, so I want to share a transparent account of how it actually went down. Before I start, I just want to say that Varun and Douglas were great founders and this…
It’s a privilege to welcome Windsurf to Cognition. Here are more details in the note I sent to our Cognition team this morning: Team, As discussed during our all-hands, we are acquiring Windsurf. We have now signed a definitive agreement and we couldn’t be more excited. Here’s…
Cognition has signed a definitive agreement to acquire Windsurf. The acquisition includes Windsurf’s IP, product, trademark and brand, and strong business. Above all, it includes Windsurf’s world-class people, whom we’re privileged to welcome to our team. We are also honoring…
Finance teams waste hours chasing receipts and answering weird policy questions. Now they don’t have to. Introducing our first @tryramp AI agents. Upload your company policy and put the bullshit work on autopilot so your finance team can actually do finance.
@lovable_dev uses Modal Sandboxes to power 20,000 concurrent code execution sessions in production 🩷💚 Every time you create an app in Lovable, that AI-generated code runs in a secure Modal Sandbox!
Slack came out in 2014. At the time it wasn't obvious why you'd want to use it. We already had email for professional conversations; quick group messages felt too unrefined to use at work. Coding agents are at a similar inflection point today. Most engineers are used to writing…
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