Ian Lim (@IanCLim) header
Ian Lim (@IanCLim) profile picture

AI health | prev AI + neuro @stanford

NYC
Joined February 2015
Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)Photo by Ian Lim (@IanCLim)
Surprise 1: Anthropic acquired a one-person biotech . . . Surprise 2: that person is me Surprise 3: I’m here to tell you all about it Yes, this is what you think it is; after 6 yrs of increasingly loose anonymity: the Professor Oak reveal post …and yes, it has gotten so boring around here that I’m literally doxxing myself to spice up the timeline ------- Ok, allow me to introduce myself. My name is Cody Tranbarger. I mostly tweet, but occasionally find time to dabble in drug dev & starting/building biotechs. My past lives span the VC, crossover, startup continuum; Prof Oak has been my way of keeping a digital foot in those worlds, despite having my physical feet planted elsewhere. The past 18 mo, ‘elsewhere’ was Mithril Medicine, a co. I founded to develop bsAbs for LAMA2-CMD & other ECM-related genetic diseases. Mithril was born out of hands-on building with @MikeNGladstone, @JasonPaulRhodes, @LifeSciVC, & team @atlasventure. Somehow, I made enough half-decent calls along the way (even a broken clock is right twice a day, eh?) to convince them Mithril/I warranted a small seed. While I can hardly rationalize such an outrageously cavalier bet, I’m grateful for it, & I'd partner with Atlas again in a heartbeat. In typical AV fashion, Mithril’s primordial form was virtual, decentralized, & ultra-lean. This stage tends to be short-lived, but for Mithril, it worked surprisingly well, for surprisingly long, thanks in part to the rapid maturation of the AI tools I used liberally. Eventually, Mithril became a bit of an experiment itself - to find the upper bound of how far it could scale as a single operator + a bunch of Claude (+ a stellar bench of part-time consultants). In parallel, I started spending time with @nc_frey, @an1lam, & @CoefficientBio team; and promptly experienced, for the 1st time, AI at the frontier. Soon thereafter, Mithril stopped looking like an experiment, & started looking like a preview of an entirely new operating model. From that spark came “Pipeline-in-a-Person.” The idea immediately resonated when we shared it here back in April; and it was central to the shared vision that led to Anthropic’s acquisition of Mithril, & my joining the team. Why join Anthropic? Three reasons. (1) For Mithril, the programs continue, with more resources & infrastructure behind them, and as much Claude as I can put to work. (2) For me, the chance to start several more programs, & find out how many one person can actually run in parallel - an almost unprecedented luxury for a curious drug hunter. (3) For our mission, a path to institutionalize & scale this new way of working, then put it in the hands of all of biopharma, all over the world - which, candidly, I find the most energizing. Will AI x Bio cure diseases? Unequivocally yes, imo… but not by the route that gets the most airtime. Rather than timeline acceleration & compression, I see orchestration & parallelization as today's low-hanging fruit. Most drug hunters see a handful of go/no-go calls in a career, & spend entirely too much of the rest trading emails (my inbox can attest). Give them the bandwidth to run several programs at once, and the time to focus on scientific judgment, and I’m willing to bet they’ll make better calls. And at scale, better calls translate to more drugs, higher hit rates, broader patient impact, & likely, a disease or 10 or 100 cured. I couldn't be more excited to build toward that future @AnthropicAI. Finally, a heartfelt thank you to BioTwitter/X. The end of anonymity is bittersweet, but if anyone’s earned a proper introduction, you all have. It’s difficult to overstate how much this app has done for me: a decade of education, plenty of friends, many job opportunities, several mentors, a few investors, even a co-founder (fmr). It was the generosity of this community that inspired me to start posting 6 years ago, after just as many years lurking. I hope I’ve been able to pay it forward, in my own small way. But, to be clear, Prof Oak isn’t going anywhere. Same beat, same themes, and now, a front-row seat to drug development at the frontier. Stay tuned for dispatches from the trenches; and remember... Gotta Cure 'Em All
535
1,066
388
14,425
1,762,635
Ian Lim retweeted
Over the past few months, Anthropic scientists have engaged in deep research partnerships with six organizations developing new medicines. We've also begun drug discovery efforts of our own. In doing so, we’ve learned much more about how Claude can support the many stages of drug development. In this blog post, we share some early results from these efforts, and describe how this work fits in with our wider ambitions in the life sciences. anthropic.com/research/early…
779
1,338
704
11,921
3,674,251
A collection of achievements from @neuralink: - Unveils brain threads thinner than a human hair and a robot that sews them into the brain - A monkey named Pager plays Pong with his mind - FDA clears Neuralink for its first human trial - Noland Arbaugh, paralyzed from the shoulders down, becomes the first human implanted and goes home the next day - Noland plays chess and Civilization VI with his thoughts - Noland hits 8 bits per second of cursor control, a world record for a brain-computer interface - Second patient Alex plays Counter-Strike 2 and designs parts in CAD software on his second day with the implant - Blindsight, its device to restore vision, earns FDA Breakthrough Device status - Brad Smith, who has ALS and can't speak, edits and narrates a YouTube video in his own AI-cloned voice - Speech restoration earns FDA Breakthrough Device status - Trials expand to Canada, the UK, and the UAE - 21 people enrolled worldwide, with zero serious device-related adverse events - A man who couldn't move his limbs for four years feeds himself with a thought-controlled robotic arm - First surgery that threads the implant through the brain's protective membrane without cutting it - Patients steer powered wheelchairs with their minds - A patient with ALS tells his wife "I love you" through the implant - A patient sets a new record of 11.32 bits per second, faster than most people with a mouse, per Neuralink
Andrew Huberman on @neuralink, and the next frontier for brain-computer interfaces: "Getting people who are in locked-in syndrome to speak, or getting people who have a spinal injury to walk, which Neuralink and others are trying to develop technologies to do. That's heroic. @elonmusk obviously understands what he's trying to achieve with Neuralink, and he's extremely savvy with respect to what can be done now, where we need to go. I think the coolest problem that's also the biggest problem is how we can noninvasively write to the nervous system in sleep and waking states. Who can develop, it will probably be ultrasound, a non-invasive way of selectively activating or quieting brain areas with high amounts of temporal precision. That, to me, seems like the most important thing to resolve right now, and it's totally doable."
1
3
1
25
8,788
Walking into work as a new Nobel laureate.
128
1,471
175
17,479
1,229,459
Ian Lim retweeted
bring back having phases become obsessed with tennis for 6 months. learn everything about espresso. randomly decide you’re a runner. buy a camera. start cooking. you don’t need to do everything forever. sometimes it’s fun to just be really into something
93
4,929
362
28,461
493,329
Ian Lim retweeted
We got hoop highlights edited by opus in devin now 😭😭 Unreal times
fun time playing basketball for the first time yesterday! thank you so much for the invite and hospitality @mattbergland looking forward to running it back! edited with opus 5.5 in Devin @cognition
2
12
848
Ian Lim retweeted
In 12 weeks, we built a research facility that is run entirely by AI. AI designs, executes, and observes experiments end-to-end across biology, chemistry, and materials science. We’re introducing SciUniverse: a benchmark that measures AI’s ability to do real-world scientific research.
243
394
221
2,826
810,061
Ian Lim retweeted
New paper! In subliminal learning, LLMs transmit traits (e.g. loving cats) though seemingly unrelated data (e.g. numbers). We proactively detect these effects as readable prompts. To do so, we use the surprising ability of models to verbalize learned soft prompts.🧵
7
38
6
252
28,420
There’s a crazy plan to turn the vacant SF Centre Mall into a downtown basketball Mecca. NBA coach Phil Handy (on staff with LeBron/76ers) is involved. The plan includes a prep academy, a Top Golf-like floor, and retail. @jillianiles and I have the deets: sfstandard.com/2026/09/13/sa…
6
13
2
63
13,434
Voice is now available in your existing Codex threads. Talk through a PR with the agent that wrote it, debate the architecture, or work out what comes next. You can jump into voice whenever something needs a back-and-forth, then let the agent keep working once you’ve figured it out together.
104
62
64
1,292
183,091
Glad to announce our Series A, bringing on some incredible partners to support us in solving one of the fundamental problems in AI.
Today we're announcing our $40M Series A at a $400M valuation, led by @a16z , with participation from existing investors @8vc, @pearvc, and @BloombergBeta and new investors @HRTVentures and @nextladder. Alongside the fundraise, three more announcements: - Vals Smith: is now generally available. Anyone can create a custom coding benchmark from any GitHub repo with 120 free credits to get started. - Frontier Risk Benchmarks: We are releasing the RSI Index in collaboration with @CoreWeave and just launched ReverseEngBench, a new cyber benchmark built with Columbia University, Tufts University, UC Berkeley, and UCLA. We are also sharing our initial work in mental health, with more to come across environmental impact, military, and biosecurity. - Website + Vals Index 2.0: We completely rebuilt the Vals website and have released Vals Index 2.0, with coverage of more of the economy. Our revenue has already grown 8x compared to all of 2025. Our customer base doubled and the team tripled in 6 months. Our results have been cited in model cards from OpenAI, Anthropic, Google, Meta, and xAI. The AI economy runs on self-reported grades. When a model ships, the scores come from the company that built it. No other trillion-dollar industry works this way. Finance has ratings agencies. Medicine has the FDA. AI has vibes and vendor benchmarks. We built Vals to be the independent evaluation layer the industry is missing. Check out our new website and try Vals Smith!
52
15
4
223
61,744
Today we're launching Sailboxes: the first cloud environment purpose-built for long-horizon AI agents. Sailboxes are full machines with persistent state that auto-sleep, built for agents that live forever, priced so you only pay for what they actually use. From $0.015 per active vCPU-hour, over 70% cheaper than other providers. Under the hood: novel architecture from @NirvikBaruah and @charley3c that live-migrates VMs based on actual resource usage. To show how robust it is, we ran a Minecraft server in a Sailbox and forced it to migrate every 2 minutes--players never noticed.
37
28
17
381
72,013
Today we're launching Era and announcing $11M in funding. We're building the intelligence layer for a new ecosystem of AI devices — the platform that lets any device manufacturer, brand, designer, or creator make objects that think, respond, and act in their own style. We're entering a Cambrian explosion — new form factors, new creators, new objects worth desiring. Made by people who've never had the tools to make them, before today. Welcome to the new Era. Backed by @AbstractVC, @BoxGroup, @topology_vc, @betaworks, @CollaborativeFund, @MozillaVentures, and @AIResidency.
We’re officially in our new Era.
143
79
41
684
435,911
Ian Lim retweeted
Neuralink telepathy user experience
395
1,112
267
9,973
1,824,893
Let’s build a better grid.
After a year focused on my family, enjoying extended travel and many hours spent gardening and surfing, I’m excited to share that I’ve started a new company, Heron Power. The electricity sector is struggling to keep pace with AI’s insatiable energy demand on top of the growing electrification of transport, industry, and buildings. Meanwhile, developed economies are deploying renewable resources at near terawatt pace in the face of strong headwinds from undersized, decades-old electric infrastructure long-due for renewal. As we transition towards a more sustainable, largely electrified energy economy, the need for more deployable, efficient, and resilient electrical infrastructure has never been more critical. Heron Power is building cutting-edge power electronics for the 21st-century grid. We aim to unlock faster growth of the electricity sector with scalable, innovative, and less costly hardware solutions, accelerating the electrification of everything. If this sounds like your kind of adventure, let us know by reaching out or applying at heronpower.com!
2
4
25
5,123