Arthur Bresnu

So happy to share that I joined @arcee_ai as a Research Engineer in VLM! My time at @huggingface was truly inspiring, and I’m grateful for all the amazing experiences. Excited for these new challenges, and want to thanks @latkins for his trust in me !

@tomaarsen congrats on the release !

🌐 I've just released Sentence Transformers v5.4: we're going fully multimodal for embeddings & reranking! Also featuring a modular CrossEncoder, and automatic Flash Attention 2 input flattening. Highlights in 🧵

OpenClaw 2026.4.7 just dropped, and Arcee is officially a bundled provider. The new bundled provider plugin includes our full catalog as well as OpenRouter support. Select Trinity-Large-Thinking from the drop-down and give it a run. Check out Trinity-Large-Thinking x @openclaw in action in the video below. 👇

@eliebakouch @PrimeIntellect congrats man !! moving to sf ?

update: joining @PrimeIntellect 🦋 i'm super excited to join the team. i really admire what they've been building and i love the mission of pushing the frontier in the open i'll be working on pre/mid training, there's so much left to figure out and i truly believe a small group with the right people, resources and focus can do sooo much 🚀

Arcee x @NousResearch Trinity x Hermes Agent

first earthquake from the 30th floor, def an interesting feeling

they said it's a good day for launches

INCREDIBLE Trinity-Large-Thinking just dropped > The STRONGEST American open model we’ve gotten so far > #2 on PinchBench > ~96% cheaper than Opus > not hype, look at the benchmarks > GPQA-D > 76.3 > beats MiniMax M2.7 !!! > but still behind Opus 4.6 > Tau2-Airline > 88.0 > basically trading blows with the frontier > ahead of most of the pack > Tau2-Telecom > 94.7 > strong > but GLM-5 still spikes higher here > PinchBench (agent check) > 91.9 > #2 overall > sitting right behind Opus 4.6 > and ahead of all other opensource attempts > this is the important one btw > because this is what your agents actually feel like in prod > AIME25 (math / reasoning) > 96.3 > competitive with Kimi and GLM > still under Opus ceiling > MMLU-Pro > 83.4 > solid general intelligence baseline > BCFLv4 > 70.1 > middle of the pack, not its strongest axis > this model is not trying to be the best at everything > it’s optimizing for: > multi-turn coherence > tool use > long-horizon agents > cost > aka the stuff that actually matters when you deploy > not “we beat everyone on X benchmark” > but “we’re close enough where economics flip the decision” > also Apache 2.0 weights > meaning: > you can run it > fine-tune it > break it > own it > American open models finally starting to look real again > took long enough Buy a GPU

the best American open-source model ever just dropped, and it costs less than $1 per million tokens i feel like more people should be talking about this

@code_star @latkins @xeophon @arcee_ai I projected my dream after a 2 months hell of apartment hunting 🫠

@latkins @xeophon @arcee_ai @Arthur_Bresnu Is he available as a real estate agent?

Today we're releasing Trinity-Large-Thinking. Available now on the Arcee API, with open weights on Hugging Face under Apache 2.0. We built it for developers and enterprises that want models they can inspect, post-train, host, distill, and own.

This April Fool's Day, we decided to stop joking around. Trinity-Large-Thinking is out now.

It's a good model sir 🫡

Bay lights return the week I move in, living room just gain some interest

Here are a few of our favorite shots from our recent out-of-home campaign. Loving how the Arcee teal cuts right through the noise of downtown SF and the traffic on the 101 + a bonus shot from the DC metro.

Sf def have some interesting conference room ! Congrats @PrimeIntellect, hell of an event !

A banner weekend for Arcee as Trinity Large Preview officially entered the Top 5 overall models on @OpenRouter! After surpassing 80B tokens on Sunday, we are already on pace to break that record again today. As our inference volume consistently tests the upper bound of our current limits, this growth signals a compounding market demand for our frontier-class open weights as we scale far beyond our initial 1T token milestone. Stay tuned—more exciting news is on the horizon!

Grateful for such an incredible team.

Walking in San Fransisco on a saturday can be surprising sometime

we finally got it on arxiv

1 trillion+ tokens served on @OpenRouter. Surpassing this milestone less than one month after the preview release of Trinity Large proves that Arcee is sticking with developers. This growth is fueled by strong enterprise developer adoption, 25,000+ unique daily users, and a #2 ranking for @openclaw usage on OpenRouter.