Arjun Karanam

@rronak_ 👀👀

I’ve left Google DeepMind. The last two years have been an incredible whirlwind. A couple years ago, I joined a small startup called Codeium. There, I got to ship Windsurf, train SWE-1 (a frontier agentic coding model), go to DeepMind in the $2.4B acquisition. Now, I decided to leave the acquisition money and DeepMind. I’m grateful to the mentors, teammates, and friends I worked with along the way. At Windsurf, thanks to @_mohansolo and Douglas Chen, I got to see what a fast moving startup that ships relentlessly and builds for the future looks like. I learned from @thenickmoy how excellent research leadership can drive outsized innovation. At DeepMind, I got to push the frontier of agentic coding, be part of the amazing team that shipped Antigravity and contributed to Gemini 3. DeepMind is a rare place: deeply curious people, exceptional research taste, and access to enormous compute and Google-scale infrastructure. A few things that I learned: 1. Finding the right hill to climb. Now more than ever, there are a multitude of directions to push the frontier in AI research. It’s easy to optimize for the wrong benchmark or capability. You should step back regularly to question if you are climbing the right hill, and adjust course often. 2. The secret to being a fast-moving team. Moving quickly is not just about working hard and long hours. It requires making concrete bets about where the world will be in 6 months, aligning around them, and cutting everything else. This was our journey from the Codeium Extension → Windsurf IDE → SWE-1 → Antigravity → Antigravity CLI 3. Silicon Valley is small. Since the split of Windsurf to DeepMind and Cognition, many of my colleagues have gone to other exciting places - Thinking Machines, OpenAI, xAI, Cursor, fast-moving startups, or started their own companies. I’m grateful to have worked with so many talented, hungry people whose stories are not yet finished. So what’s next? We are living in one of the most exciting and powerful times in human history. Just like we transformed software engineering, soon every industry, every unit of work will be radically transformed, democratized, accelerated. With this comes new challenges, and new doors of frontier research to be opened. More soon.

@catherinehyeo @evatuecke @GreylockVC @neo @BoxGroup @Liquid2V @JeffDean Let’s goooo, so hyped

Introducing Altara: the scientific intelligence platform for the physical world. Today @evatuecke and I are excited to announce our $7M seed led by @GreylockVC, joined by @Neo, @BoxGroup, @Liquid2V, and angel investors including @JeffDean and leadership from OpenAI & AMD. We’re already working with early customers in semiconductors, batteries, and advanced materials. More below.

@mvpatel2000 oh wow that's crazy

Friend got a job offer and to close him the startup gave him... a h100 node for a week lol

@ericzelikman @gharik @YuchenHe07 @TheAndiPenguin @noahdgoodman Ahh congrats!! So so exciting

finally announcing i’ve started humans& w/ amazing friends @gharik & @YuchenHe07 & @TheAndiPenguin & @noahdgoodman & many other world-class folks. we're optimists: it’s possible to rethink how we build ai, to empower people to accomplish more together tldr: love is all you need

@leithnyang ooh say more?

2025 was the year of rl. 2026 is the year of distillation

ive always held that full immersion is sliiiightly overrated - any screen can feel immersive if you're locked in enough - sent from my iphone while laying in bed

@cyber_plantae ooh so down

Starting a GC for Storytelling! If you’re working on a tech project and creating a story/its lore or need inspiration for crafting lore around it, engage with this post to join!

@jonah_manzano I mean it isn't right

Some say this is not liquid glass on Instagram.👀

@josancamon19 it’s terrifying

just think about the amount of shareholder value lost

The streets feel like GTA V SF edition

@Casey I’m so excited for the world where we have a digital twin for everything

did a project w meta quest 3 where i scanned my studio. its pretty rad, you can walk around a look at stuff and get close. i spefically did not clean the place before we scanned it. works on your phone and on the headset - horizon.meta.com/world/25324720…

@MohapatraHemant neither sci fi nor fiction, but team of rivals is a must

📖📚At a book shop for the next 30 minutes, what was the best book you read in 2025? Sci-fi & fiction preferred, but anything else good too!

@lizwessel Big +1! After our GC, our contract lawyer has been the most essential in helping w/ enterprise partnerships and data privacy

@afoxdesign Tbh my top Vision Pro use case

Give me a lightweight headset, a selection of calm VR environments, noise cancelling headphones and access to my Kindle library ..and I think I would read in VR

@mathurahravi rest in peace lower mission bay (*dogpatch)

your quality of life in sf is instantly better if you’re walking distance to one of the neighborhood main streets (valencia, filmore, polk, irving st, union, hayes, divis, columbus, etc)

Mostly agree, but my take is that in the future we’ll see memory and retraining working hand-in-hand Memory imo is like taking notes: fast personalization and context. RL post-training is acquiring the skill itself - fixing systematic mistakes, improving tool use, and turning pass@n -> pass@1 The especially fun combo comes when we RL product-specific ways of reading and writing to memory

The everyday practitioner's continuous learning is really AI memory. >Easier to adopt >Instant adaptation (real-time learning) >Personalization without retraining >Deterministic, auditable behavior >Safer than model level learning avoiding catastrophic forgetting

@ToonHive @radsechrist 😭, a peak Covid memory

‘Kipo and the Age of Wonderbeasts’ is scheduled to leave Netflix on June 26, 2026. (Source: whats-on-netflix.com/leaving-soon/o…)

@_akhaliq they cooked

Microsoft just released TRELLIS 2

@AKurian001 😍

Single image to Splat in just 2 seconds. Testing out in AirVis app. Apple ML team did an amazing job.

@yacinelearning Dread it, run from it, gans will always arrive

“heard you guys had trouble verifying the unverifiable” - GANfather