Meet Factory Droid 1.0: A Model-Independent Coding Agent Harness Built on Script Mode
Factory has released Droid 1.0 , the largest update yet to the Factory Droid agent harness. The main change is programmatic tool calling, now on by default. The model writes a program that runs its tools. One model request can now drive hundreds of tool calls. TL;DR Size: Base prompt is 13,055 input tokens, down 37% from 20,887. Only 2 tool definitions ship up front, down from 11. Runs on: macOS and Windows desktop app, a terminal UI, and the Node SDK @factory/droid-sdk . Works with any supported model, including your own API keys. Performance: Highest pass rate of every harness Factory tested, on the same model, at lower cost. Best: 65.2% on Terminal-Bench 4 with Claude Opus 5.5, at $4.73 per passed task (self-reported). Worst: With GPT-6.1 Sol, Droid takes 10% longer per passed task than Codex. What is Droid 1.0? Droid 1.0 is a model-independent coding agent harness from Factory. Factory defines a harness as everything around the model. That me...
