CEO of @b12 | 🤓 🤖

Joined November 2008
64 Photos and videos
We've had beta access to ChatGPT Ads and have been impressed. AI advertising is complicated, but I remember friends who were early advertisers on Facebook and saw massive success. We are making a bet at @B12 that the same opportunities will exist on ChatGPT. See some of our early lessons below. If you are playing around with ChatGPT Ads let me know as well, we would love to trade notes.
May 11
1/8 @OpenAI just launched its self-serve Ads Manager for ChatGPT, but we've been running ads inside ChatGPT since March. Here are six lessons we've learned.
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With code generation in @b12, we were worried about the loss of traditional no-code editing. We have spent nearly a decade thinking through ways for users to click and edit. It has been amazing to see how quickly the team has reached parity and, in some ways, improved how users can edit a website in B12 today, while also having the power of native AI generation and agents.
May 1
New editing options are live in B12! Click to tweak fonts, colors, images, and more directly on the page with visual edit mode, or use the left pane to see more style choices.
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The first time I used our new agent, I thought about how great it would be to queue tasks. I'm glad this is now live for all users!
Apr 27
New in B12: message queuing. Now you can give the AI Agent tasks as quickly as you think of them. No need to wait before sending your next request. It queues everything up and handles tasks in order.
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Try a free month of B12 on us!
Apr 21
Built something with B12, or want to try it? Generate a new site or share one you made in the past month, then reply with your link. We’ll DM you a code for a free month. Can’t wait to see what you make!
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We are excited to announce one of the biggest changes we have ever made at @b12. We started working on AI-powered websites in 2015. This was before ChatGPT, before the scaling laws, and even before OpenAI was founded. We spent the last decade building tooling, themes, and a library of components that would help us bring AI to websites. It was, at times, a glimpse into our AI future. Over the last year, coding agents have made tremendous progress, and we have had many discussions about what that means for B12. It became increasingly clear that the future of our space would be driven by agentic coding. Not only is the technology improving exponentially, but the promise of code generation also aligns well with the pain points we hear from users who want to build without constraints. So we made a hard call: we disrupted ourselves and moved beyond a framework we had spent years building. Today, we are announcing B12 3.0, powered by a new coding agent. We have been testing it over the last few weeks, and the results have been stunning. B12 3.0 has enabled users to build websites, apps, and internal tools that are richer in functionality and design. It has also doubled our purchase rate. Huge thanks to the whole team that worked so hard to bring B12 3.0 to market and to our users who have provided tremendous feedback. We are in the early innings of how agentic coding will change what we can all build. I’m excited to bring this capability to B12!
Mar 12
We’ve spent 10 years trying to make building a website dramatically easier. Not just faster, but helping people create exactly what they have in mind. Today we announced B12 3.0. Instead of templates, you start with a prompt that a coding agent turns into a complete project around your idea. You can build everything from user-friendly web apps to beautiful online stores. Use the link below to read more about what’s new in B12 3.0.
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B12 is excited to be one of the first apps on ChatGPT! Across Plugins, GPTs, and now Apps, @b12 has been lucky to help millions of @OpenAI users build and grow websites with AI.
Feb 18
Okay, this is a fun one 🚀 B12's Website Generator is now featured in @OpenAI's ChatGPT app directory! It’s an easy way to make a real website directly in ChatGPT. Tell it what to build, answer a couple of quick questions, and get a link to view your complete site on B12, where it's ready to customize and publish. If you want to try Website Generator: • Visit the ChatGPT app directory • Click B12 Website Generator under Productivity • Hit "Start chat" Or just get started using the link in this thread. Really proud of the team and can’t wait to see what people build! ✨
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28 Oct 2025
Memory can unlock how we use AI. @taranjeetio and the @mem0ai team are building the infrastructure to bring AI across applications. I was lucky enough to invest in the pre-seed. Just as inspiring as the traction is Tarajeet's journey from India to SF to build Mem0.
28 Oct 2025
Memory is what makes us human. It's also what makes AI truly intelligent. @mem0ai has raised $24M to build the universal memory layer for AI. Thousands of teams in production. 14M downloads. 41K GitHub stars. Intelligence needs memory & we're building it for everyone. More👇
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23 Oct 2025
Way to go Sky! In a market where great builders can do more than ever, you couldn’t ask for more talented folks than @AriX and @conradev to help shape the future of AI on your device. Thanks so much for letting me support you as an angel for the second time!
We’ve acquired Software Applications Incorporated, the maker of Sky—a natural language interface for Mac. openai.com/index/openai-acqu…
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2 Oct 2025
Congrats to the @Lighter_xyz community on the mainnet launch! @vnovakovski is both a brilliant and resilient founder and it is awesome to see him and Lighter thrive.
1 Oct 2025
The Lighter public mainnet is live after 8 months of private beta! Trade perpetuals with low costs and low latency on Ethereum L2 with custom ZK circuits for verifiable matching and liquidations. Experience onchain trading at the performance grade of high frequency finance.
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1 Oct 2025
I have some Sora invites. Just reply / DM if you want one :)
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18 Sep 2025
We just launched the B12 Agent! It helps you edit, launch, and manage your website with AI. It has already been used hundreds of thousands of times and is now available to all our users. Let us know what you think!
18 Sep 2025
Meet B12’s AI Agent — the fastest way to update your website. ⚡ Instead of aimlessly clicking or thinking of what's next, just type what you want or ask AI Agent for advice: - “Switch my color palette” - "Suggest 5 blog posts" - “Publish now” Try it out: b12.io/signup
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8 Sep 2025
I distinctly remember learning about Arnav and silent speech in 2018. This team has pioneered a new way for us to communicate with computers and each other. I recently saw the product at @alterego_io's office, and it feels like magic. I'm excited for the future and thrilled to invest in this incredible team.
8 Sep 2025
Introducing Alterego: the world’s first near-telepathic wearable that enables silent communication at the speed of thought. Alterego makes AI an extension of the human mind. We’ve made several breakthroughs since our work started at MIT. We’re announcing those today.
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30 Jun 2025
It's clear to see the pace of AI in our own tools. It is harder to grasp the speed of change in other domains. @joshim5 and the @chaidiscovery are quickly advancing the frontier of how we can engineer molecules.
We’re excited to introduce Chai-2, a major breakthrough in molecular design. Chai-2 enables zero-shot antibody discovery in a 24-well plate, exceeding previous SOTA by >100x. Thread👇
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5 Jun 2025
Congrats to @circle on the IPO today! In 2013, I had the opportunity to work with Jeremy and David while the company was being incubated at @generalcatalyst. That experience taught me three things: - There are levels to entrepreneurship, and Jeremy showed what it means to operate at a different level. - I learned the value of backing great founders repeatedly. David had worked with Jeremy several times, and it felt like they’d always be building together. - Bitcoin and crypto were going to be big 🚀 Circle has become foundational internet infrastructure. I’m excited to see what’s next!
5 Jun 2025
Circle is now officially a public company, listed on the @NYSE under $CRCL. With @USDC, EURC, Circle Payments Network & more, we're pushing forward a future of frictionless value exchange. We are not just building financial products. We are building the money layer of the internet. To everyone who has contributed to this moment, thank you.
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28 May 2025
Excited for Sky to bring AI to macOS! @AriX and @conradev are amazing builders and I'm excited to back them for a second time ☁️
28 May 2025
Introducing Sky for Mac. Here's a 90-second sneak peek:
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10 Apr 2025
Way to go @vybeappp and @mandelapatrick_ 🚀
10 Apr 2025
A common pattern in consumer AI over the last couple years: An app that generates AI portraits of you will go viral—but then users churn after a few days. I started advising one of these apps last year called @vybeappp and the goal was to turn it into a durable app. We started with this question: In what context would people need generative portraits on a recurring basis? The founder @mandelapatrick_ dug into the data and found that some users were sticking around: they were trying on different clothes using the app. So we redesigned the app to be exclusively focused on this use-case. But most importantly, we integrated it into their existing patterns of behavior: a mobile safari extension that would intercept the user every time they were shopping. Just tap a button to try on the item on any page. They just shipped it and the results blew past all expectations: Retention nearly 4x. Once the user enabled the extension, they were essentially retained for life. And even better, it unlocked a better revenue stream: instead of a subscription that users would inevitably cancel, VYBE simply collects a commission in the background off every purchase into perpetuity.
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7 Apr 2025
We just hit 3 million conversations on ChatGPT by adding 1 million conversations in 52 days! I've never seen anything grow as fast as AI tooling. @b12 added more users to our platform last month than we did in our first 8.5 years. 🚀
7 Apr 2025
Our Website Generator passed 3M conversations on ChatGPT only 52 days after hitting 2M. 🌟 Thank you, @OpenAI! Check it out and build a website with B12 on ChatGPT: chatgpt.com/g/g-iYSeH3EAI-we…
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13 Feb 2025
Our CEO @KaranKunjur broke the news this morning about our $110M Series B funding round on @BloombergTV! The funding round, co-led by @lightspeedvp and Altimeter, includes participation from existing investors Alpine Space Ventures, @firstround, and others. More details here: prnewswire.com/news-releases… We're grateful for the support and excited to revolutionize satellite tech with our high-power, multi-orbit satellite platforms. Join the team! k2space.com/careers
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30 Jan 2025
Seeing my pal @dharmesh take the world of AI and Agents by storm has been fun! He’s been talking about this for as long as I’ve known him—which, at this point, is an embarrassingly long time. @b12 launched our Website Generator less than a year ago, and it’s already been used over 2 million times. Now, we’re officially on @AgentDotAi!
30 Jan 2025
Our Website Generator agent is officially live on @AgentDotAi! 🚀 Create a complete website in seconds — all you need to share is your business name and a short description: agent.ai/agent/website-gener… Shout-out to @dharmesh for creating such a cool platform!
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