Strands Decider 2B: open 2B local decision model for agent workflows
AWS Strands Labs released Strands Decider 2B—an open-source 2B-parameter decision model (Qwen3.5-2B torso) that picks among fixed options with calibrated confidence in ~115ms on a local GPU, for agent routing, tool selection, and guardrails instead of a full LLM call. Weights, training data, and scripts ship on GitHub/Hugging Face with a strands-decider CLI and Strands Harness intervention examples.