Co-founder and CTO @RadicalNumerics He/him

San Francisco, CA
Joined August 2016
Armin W. Thomas retweeted
1/10 Introducing Omnii Genome, one of eight Advances built on Omnii-1. A single generalist model now outperforms leading specialized models (AlphaGenome) in linking genetic changes to gene activity and mapping regulatory interactions. These capabilities help make sense of the 98% of the human genome that doesn’t code for proteins How Omnii-1 works:
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We’re only beginning to see what generative models trained across biological modalities can do. Omnii Genome is a great example: built on Omnii-1, it demonstrates strong performance across very different genomic tasks, while supporting capabilities beyond those of leading specialized models. Really proud of the team that made this happen. Lots more to come!
1/10 Introducing Omnii Genome, one of eight Advances built on Omnii-1. A single generalist model now outperforms leading specialized models (AlphaGenome) in linking genetic changes to gene activity and mapping regulatory interactions. These capabilities help make sense of the 98% of the human genome that doesn’t code for proteins How Omnii-1 works:
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Armin W. Thomas retweeted
When we backed @RadicalNumerics, the bet was that one general model could learn the language of biology, the same way LLMs did for text. Today Omnii-1 beats AlphaGenome, designs antibodies and cancer vaccine candidates, and designed a phage covered by @carlzimmer in @NYTimes. All from one model. 🧬
Introducing Omnii-1, our most powerful genome language model, and a major step toward general biological intelligence In a world first, Omnii-1 designed the first AI-generated bacteriophages to be administered to a human patient with an antibiotic-resistant infection under compassionate use
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Armin W. Thomas retweeted
Introducing Omnii-1, our most powerful genome language model, and a major step toward general biological intelligence In a world first, Omnii-1 designed the first AI-generated bacteriophages to be administered to a human patient with an antibiotic-resistant infection under compassionate use
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Omnii-1 is out. We've learned a lot about what happens when you train a single model across biology rather than solving each problem separately. Some of the more surprising results haven't made it into a blog post yet. Incredibly proud of the team that built this!
Introducing Omnii-1, our most powerful genome language model, and a major step toward general biological intelligence In a world first, Omnii-1 designed the first AI-generated bacteriophages to be administered to a human patient with an antibiotic-resistant infection under compassionate use
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Armin W. Thomas retweeted
Today, we are launching Omnii-1, our next-generation multimodal genome language model. Omnii-1 draws on a long line of research breakthroughs in genome language modeling, spanning model architectures, multimodal pretraining, as well as new mid-training & post-training methods tailored to biological data. The launch includes a staggering amount of technical material: 8 full-length technical blogs (and we are just getting started). Proud of the team for this milestone!
Introducing Omnii-1, our most powerful genome language model, and a major step toward general biological intelligence In a world first, Omnii-1 designed the first AI-generated bacteriophages to be administered to a human patient with an antibiotic-resistant infection under compassionate use
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Excited to welcome @tri_dao as a scientific advisor @RadicalNumerics ! We go way back to our @HazyResearch days, working together on some of the first hybrid models (eg H3 / Hungry Hungry Hippos). Great to have you aboard, Tri!
I'm excited to share that @tri_dao has joined @RadicalNumerics as a scientific advisor! Tri and I were labmates at Stanford's Hazy Research, where he helped pioneer advances in efficient ML systems (FlashAttention). Scaling AI across multimodal biological data demands entirely new approaches to ML systems, and Tri will help guide our research at this frontier. Welcome aboard, Tri! Read more: radicalnumerics.ai/blog/tri-…
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Armin W. Thomas retweeted
1/5 We pretrained Omnii, a multimodal language model on DNA. Then, we asked it to design a cancer vaccine In new research, we show how Omnii learned to turn a tumor DNA sequence into a personalized mRNA vaccine design. Read more here: radicalnumerics.ai/blog/omni…
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Armin W. Thomas retweeted
I sat down with @mariogabriele on the Generalist podcast to talk about why DNA is the most complicated and important language ever, how we trained the largest genome language model to master it, and yet, we’ve only scratched the surface of what it can do and understand.
What happens when AI can write the genetic code for life itself? Eric Nguyen (@exnx) is the co-founder of @RadicalNumerics, the lab behind the models that generated the first genome ever created entirely by AI, a bacteriophage that had never existed in nature until it wrote one. He believes DNA should be treated the way language is treated: something a model can read, then write. With more DNA sitting in public databases than there is text on the entire internet, he sees an almost unmined field, one where the models built to make sense of it remain, by his own admission, no more sophisticated than linear regression. Thank you to the partners who make this possible @ahrefs Brand Radar: Find your brand in AI results: ahrefs.com/generalist @brexHQ: The intelligent finance platform: brex.com/mario @Guru_HQ: The AI source of truth for work: (3:35) An overview of Radical Numerics (11:08) Why they started with DNA (26:24) The limits of language models in biology (31:15) Eric’s free-range upbringing and path to his PhD program (41:20) Applying long-context models to DNA and meeting his co-founders (55:30) How better general LLMs benefit Radical Numerics (1:02:05) Making biology more concrete (1:18:09) Final meditations
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Armin W. Thomas retweeted
What happens when AI can write the genetic code for life itself? Eric Nguyen (@exnx) is the co-founder of @RadicalNumerics, the lab behind the models that generated the first genome ever created entirely by AI, a bacteriophage that had never existed in nature until it wrote one. He believes DNA should be treated the way language is treated: something a model can read, then write. With more DNA sitting in public databases than there is text on the entire internet, he sees an almost unmined field, one where the models built to make sense of it remain, by his own admission, no more sophisticated than linear regression. Thank you to the partners who make this possible @ahrefs Brand Radar: Find your brand in AI results: ahrefs.com/generalist @brexHQ: The intelligent finance platform: brex.com/mario @Guru_HQ: The AI source of truth for work: (3:35) An overview of Radical Numerics (11:08) Why they started with DNA (26:24) The limits of language models in biology (31:15) Eric’s free-range upbringing and path to his PhD program (41:20) Applying long-context models to DNA and meeting his co-founders (55:30) How better general LLMs benefit Radical Numerics (1:02:05) Making biology more concrete (1:18:09) Final meditations
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Armin W. Thomas retweeted
Showcasing a critical application of our new frontier genome language model, Omnii. Omnii can strengthen biodefense pipelines by covering blind spots of existing search-based methods.
1/ Leaders of OpenAI, Anthropic, & GDM signed a letter urging Congress to mandate DNA synthesis screening. But chatbots & agents can't read DNA. So we built Omnii to defend against natural & AI-designed pathogens. Blog: radicalnumerics.ai/blog/omni… Letter: screendna.org
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Making dangerous DNA is basically a print job nowadays. You design it on a laptop and it shows up at your door. The screening meant to catch it is mostly spell-check: it matches your sequence against a list of known threats. Omnii actually reads. It understands what a sequence would do, even the AI-designed ones meant to sneak past today's tools. First look into our biodefense work @RadicalNumerics below. Much more to come!
1/ Leaders of OpenAI, Anthropic, & GDM signed a letter urging Congress to mandate DNA synthesis screening. But chatbots & agents can't read DNA. So we built Omnii to defend against natural & AI-designed pathogens. Blog: radicalnumerics.ai/blog/omni… Letter: screendna.org
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Armin W. Thomas retweeted
1/ Leaders of OpenAI, Anthropic, & GDM signed a letter urging Congress to mandate DNA synthesis screening. But chatbots & agents can't read DNA. So we built Omnii to defend against natural & AI-designed pathogens. Blog: radicalnumerics.ai/blog/omni… Letter: screendna.org
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Armin W. Thomas retweeted
Together with my co-founders Michael @MichaelPoli6, Stefano @Massastrello and Armin @athmsx, I am excited to announce @RadicalNumerics is emerging from stealth with a $50M seed round to build general biological intelligence. We’re also sharing an early preview of our new model Omnii, the most powerful genome language model to date. Omnii preview link: radicalnumerics.ai/blog/radi… At Radical Numerics, our mission is to master the code of life, and to drive the frontier of biological AI for both design and defense. This is our dual mandate, which comes from something our own team helped make possible. Our founding team trained Evo and Evo 2, the largest biological AI models (40B params) trained on DNA sequences. Trillions of tokens across all of life, from microbes to mammals. It’s fully open source, and created the field now known as generative genomics. Last year, scientists used Evo to generate the world’s first complete genome from scratch using AI. Turns out it was a bacteriophage—a type of virus. It functioned in the real world, and in this case it was harmless. But for us, it was a clear turning point. It showed that AI is no longer just analyzing biology. It is on the cusp of generating functional lifeforms. Eventually, AI will have the power to design and control life itself. That should make all of us incredibly excited, and incredibly uneasy. (Anyone can design DNA with a new function, and have it synthesized and delivered, like something from Amazon Prime). The same technology that will help us cure cancer is the very technology that might create the next global pandemic, or worse, allow the creation of bioweapons that can wipe out populations. We believe these forces are inseparable. If you work on the frontier of biology, you have to build technology to safeguard it from its misuse. Existing biosecurity tools are sorely losing the arms race, relying on outdated “have I seen this exact thing before?” style algorithms. We founded Radical Numerics to turn the tide. And we can’t do that by training on textbooks and natural language. We must understand the language of biology from the raw physical data itself, to reason across every molecule and modality, from DNA to proteins. The next frontier for AI goes far beyond chatbots or video generators to models that can understand and engineer life. Today, we’re previewing Omnii, which is already far surpassing Evo 2, and will continue improving as we scale and add new modalities (training now). 1. For human health, Omnii can read and write whole genomes (more on writing later). It’s state of the art (SOTA) on detecting causal variants for disease, and can rank Alzheimer's mutations zero-shot. We’re partnering with a diagnostics company to use Omnii for early cancer detection (pancreatic and multi-cancer). 2. For defense, Omnii is SOTA at detecting AI-generated pathogens. We benchmarked existing detection tools, and they simply can’t detect the AI-generated ones (“deepfake viruses”). We’re partnering with a US national lab to pilot Omnii for detecting the next pandemic, both natural and AI-generated. We have a data center full of Blackwells in construction now to build the most powerful biological AI models ever. This mission takes a new kind of AI lab that can actually scale on physical, biological data: new alignment research (mid/post training), scaling long context, building out mech interp teams to dissect what these models learn, new architectures and systems designs, all from the ground up. Our team is made up of AI researchers and scientists from top labs and institutions (e.g. Stanford, MIT, Google DeepMind), but more importantly, we all share the belief that this is the most important challenge of our lifetime. If you feel similarly, we are hiring. We aim to bring the brightest minds in AI and science together to save lives. Thanks to our partners on this journey, led by Emergence Capital @emergencecap, with Obvious Ventures @obviousvc, Triatomic @TriatomicCap , and Patrick Collison @patrickc. Our advisors include Eric Horvitz @erichorvitz, CSO of Microsoft, Chris Re @HazyResearch of Stanford, George Church @geochurch of Harvard, and Andrew Weber @AndyWeberNCB, former Assistant Secretary of Defense for Nuclear, Chemical and Biological Defense Programs. Fortune article: fortune.com/2026/06/15/exclu… Jobs: radicalnumerics.ai/join-us
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