Open models from an American research lab. discord.gg/arceeai

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Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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Arcee.ai retweeted
Nathan has worked his ass off in recent months to get this off the ground, and I'm so excited he can finally show it off! Congrats, and the community is better off with you and @trillium_labs in it!
Today we're unveiling Trillium Labs @trillium_labs, a new non-profit to foster the open science of frontier AI. We're building open post-training recipes and will expand into open infra to study RSI, reward-hacking, multi-agent systems, and whatever comes next. We're built around the theory of change that you need more eyes to solve hard technical problems. We have faith in the scientific methods and communities that humanity has built, and worry that AI is becoming too closed to utilize them. Trilliums are wildflowers that bloom briefly in the spring, before the forest canopies fill out. Though they are small, they lay the foundation for the cycles of growth and nourishment through the rest of the year. At Trillium Labs, the recipes will be the slow nutrients for the seasons and the model releases will be the blooms. Building an institution dedicated to this is needed because, much as nature’s trilliums are slow to expand and grow, the open-ecosystem needs time and dedicated resources to catch up. I co-founded with with a long-time friend and collaborator Tom Zick (@thesezickbeats). We're hiring (full time + student collabs/interns), we're fundraising, and we're looking for compute. Please get in touch if you're interested in helping out. Offices based in the Bay Area and Cambridge MA, remote okay. I’m in the Bay Area until for The Curve and COLM to connect with people who are interested. We’re thankful to have initial support from Halcyon Futures and Schmidt Sciences with more funding en route to enable our ambitions of scaling. Our advisors @Thom_Wolf, @HannaHajishirzi, @gneubig and @ctnzr have been instrumental to building the ecosystem that exists today, and I’m stoked to get to keep working with them.
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Arcee.ai retweeted
Six more speakers are joining Open Intelligence Summit + more on our Day 0 Workshop with @MLHacks. Jeff Boudier, @huggingface Linden Li, @appliedcompute Vasek Mlejnsky, @e2b Lucas Atkins, @arcee_ai Victor Su Ortiz, @MiniMax_AI Meghan Grady, DigitalOcean RL, agent infra, and learning loops, from the people building them. Request a seat. do.co/4ADFScF
Join MLH and @DigitalOcean at The Midway for a hands-on workshop day. Ship real projects with open-weight models and open-source infrastructure with MLH and DigitalOcean. When: Monday, October 12 at 9am Where: The Midway, San Francisco Register: luma.com/OIS
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We’re two days out from @flwrlabs AI Day. Catch our CTO @latkins on stage, see the latest Flower tech and panels, and connect with teams pushing open, production-ready AI forward. We'll see you at The Pearl! Register: luma.com/flwrlabs-uygg
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Arcee.ai retweeted
1/9 The Reverie Summit 2026 agenda is live! What does it take to build world models, train robots, and search hundreds of billions of pages? Meet the teams building the data systems behind them. November 5 in San Francisco. reveriesummit.com/
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Arcee.ai retweeted
Super excited that I am the closing keynote at Reverie Summit in SF on November 5th. Going to be taking the traditional Cloud Native infrastructure approach to task and talk about how we look at infra and compute differently at @arcee_ai. reveriesummit.com/session/re…
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Arcee.ai retweeted
okay let's read this
Replying to @llm_wizard
Full tech report is so detailed, btw, @stochasticchasm - it's time.
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Arcee.ai retweeted
Open Science is alive !!!
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in @stochasticchasm tradition, I am going to do a paper breakdown of the new DeepSeek Elastic Compute after reading through it. looks very nerd snipe-y and interested in the lessons they learned. arxiv.org/pdf/2609.22978
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We’re proud to sponsor Open Together, a free community event hosted by @huggingface on Friday, October 16, to kick off Open Source AI Week in SF. The evening is split into two parts: ➡️ 6PM – 9PM: 36 live community demos, food, drinks, and time to connect with open-source builders 🪩 9PM – 12AM: Full dance floor with live DJ sets Doors open at 6 PM, and the first 500 people through the door get collectible HF swag. 🤗 RSVP: luma.com/opentogether
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Arcee.ai retweeted
Thrilled to announce I've joined @arcee_ai as Head of Compute / Infrastructure to build the model stack for the next generation of American open source frontier intelligence. I'm hiring. If you're interested in working on a rigorous team at the frontier of infra, DMs are open!
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Today on TITV: - AI safety push sparks demand for watchdog groups | @rocketalignment -What is China’s view of AI safety? | @ruima, Founder of Tech Buzz China -@arcee_ai raises $150M at $1B valuation | @MarkMcQuade, Co-Founder and CEO of Arcee -Why compute needs a big down payment | @meredithmazz x.lingyaoai.com/i/broadcasts/1qKDzWLmY…
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Lucas Atkins (@latkins) helped build Trinity Large, @arcee_ai’s 400B-parameter open-weight model, trained on 17 trillion tokens. He also co-introduced NAC, an open-source harness that coordinates parallel agents and preserves task state across long-running engineering work. From training open models to building systems that work together, Lucas brings hands-on experience to the collaborative AI conversation. Meet him at Flower AI Day 2026, September 30 at The Pearl in San Francisco. Register: luma.com/flwrlabs-uygg
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Huge thank you to @emergencecap for this spot on the @NYSE floor!
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Love seeing US labs growing and thriving. Show @arcee_ai some love. 💙
Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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Arcee.ai retweeted
BOOOOOOOM 🔥
Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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Arcee.ai retweeted
Proud of our team and grateful to everyone backing us. We’ve been quiet for a bit, but we’ve been in the lab cooking. Lots coming over the next few months, and looking forward to sharing what we’ve been working on. A big milestone for us, but the job’s not done.
Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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Arcee.ai retweeted
Beautiful things are going to come out of this. The team is cracked, the vision is clear, and the work is in full swing.
Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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Arcee.ai retweeted
I’m so incredibly proud of what we are building at @arcee_ai . It’s a truly special place. We are only getting started though. We’ve been quiet for a while, but we haven’t been idle. I can’t wait to share more about what we have been grinding on for the past ~6 months. I won’t spoil anything, but you can get some idea from this announcement.
Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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Arcee.ai retweeted
So happy to finally announce this. There’s a lot of work still to do, but we don’t have to cut corners anymore. I can’t wait to show you the fruits of this, which will be sooner than you think. Thank you to everyone who has supported us, argued in favor of open weights, and published their research transparently and openly. We wouldn’t be here without all three!
Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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