Abacus opens 2T-parameter Smaug agent model

Abacus.AI released three open-weight Smaug models, including a 2T-parameter Smaug Agentic and a 27B Smaug Mini, while claiming its fine-tuning improves long-running agent loops by 15–20% without raising cost in its launch announcement. Enterprises can host the family inside their own VPC, and the Hugging Face model listings make the weights downloadable. Builders weighing local control against hosted frontier models should treat the 15–20% as a vendor claim and run task-level evals alongside the archive’s open-weight adoption denominator.