Arcee AI Raises $150 million at a $1 billion valuation, aiming to build open-weight models and compete with leading foreign labs.

Arcee AI built a 400-billion-parameter open model for about $20m. Now investors value the US lab at more than $1bn.

SAN FRANCISCO, Sept. 16, 2026 (GLOBE NEWSWIRE) -- Arcee AI, a U.S. artificial intelligence company building frontier open-weight foundation models, today announced its Series B funding round led by ...

In 2025, Mark McQuade took a gamble wholly specific to the AI era. Arcee AI, the startup he founded in 2023, was focusing on post-training—the process by which an existing model is honed for humans.

Bolt.new launches Forge, giving Pro users 50x more usage while training a trillion-parameter open-weight model with Arcee AI starting October ...

MIAMI, April 19, 2024 /PRNewswire/ -- Arcee.ai, the industry leader in specialized language models for enterprise generative AI, is hosting a Model Merging Hackathon–offering cash prizes to developers ...

For much of 2025, the frontier of open-weight language models has been defined not in Silicon Valley or New York City, but in Beijing and Hangzhou. Now, one small U.S. company is pushing back. Arcee ...

Arcee, a tiny 26-person U.S. startup that built a massive, 400B-parameter open source LLM on a $20 million shoestring budget, has released its new reasoning model. Arcee calls the model Trinity Large ...