ThursdAI — the weekly AI news podcast hosted by Alex Volkov — has covered 3 Arcee AI releases since Mar 2025, most recently Trinity Large on Jan 29, 2026. Highlights include Trinity Large, Arcee Trinity, Arcee Conductor. 2 of them shipped with open weights. Every entry below has primary-source links and the episode segment where we covered it live, plus key numbers where we have them.
Arcee AI ships Trinity Large: 400B MOE trained in 33 days for $20M
Arcee AI's Trinity Large is a 400B-parameter MOE with 13B active parameters, trained on 17T tokens across 2000 B300 GPUs in 33 days for $20M. It has 512K native context (twice Kimi K2.5), is free on OpenRouter until February 2026, and the panel called it the largest Western open-source lab model.
Arcee Trinity launches US-trained open MoE family
Arcee AI introduced Trinity, a family of US-trained open mixture-of-experts models built from scratch, starting with Trinity-Mini and Trinity-Nano-Preview. CTO Lukas Atkins joined the show to discuss the training approach and previewed Trinity-Large for January 2026. The release positions Arcee as a domestic alternative in an open-weights field dominated by Chinese labs.
Arcee AI announces Conductor, an intelligent model router
Arcee AI's Lucas Atkins joined the show to announce Conductor, a model router that picks the best model (including Arcee's small specialized models) for each query. It targets cost and quality optimization by routing requests instead of sending everything to one large model.
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