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Glossary

Term Meaning
Eyes The screen model. Given a screenshot and a description, it returns where to click. Used for apps that expose no accessibility tree.
Brain The decision model. Answers typed multiple-choice questions about one step, with a probability for every option.
Hands The macOS harness. Reads windows through accessibility, turns each step into questions for Brain, acts, and checks the result.
Bench Real-desktop tasks with graders that check the final state of files and apps. Suite versions are written v25 and so on.
System One Our name for the decision style: fast, one-pass choices with probabilities, as opposed to step-by-step reasoning in text.
/v1/systemone The HTTP request format Brain serves: a state, typed questions, and answers with probabilities.
choice / score / noul The three question types: pick one option; pick a level on a scale; yes or no.
Router The 0.8B answers first; steps below its threshold, or costly to get wrong, are answered by the 4B.
Threshold The confidence below which the router hands a step to the 4B. The release uses 0.96, stored as router_threshold in the 0.8B’s deskmind.json.
Escalation A step answered by the 4B instead of the 0.8B. About 70% of steps escalate in the current release.
ASK An option the harness adds when the goal matches more than one record; choosing it asks you instead of guessing.
DONE / done-check DONE is the model saying the task is finished. The done-check makes the harness verify the final state before accepting it.
False “done” The model said DONE when the task was not finished. The release had none in 39 real-desktop runs.
Release tags (G14, G18b, …) Training rounds of Brain. G18b is the current release; on Hugging Face its weights are tagged g18b-q8 (8-bit).
q8 / 4-bit Weight quantization. Brain ships 8-bit; Eyes runs 4-bit in the app.
MLX Apple’s machine-learning framework for Apple Silicon; DeskMind’s models run on it.
Oracle A scripted run that knows the correct answer for a sandbox task; used to label training data, never at run time.
Held-out / holdout Tasks or decisions kept out of training, used only to evaluate.
Offline gate Before a desktop test, every probe and held-out set is replayed against the previous release; a candidate that is worse on any check does not ship.
JevBench A third-party benchmark of typed decisions. We report the 231 public items and have requested a sealed run; DeskMind is not affiliated with its maintainers.
ScreenSpot-Pro A public benchmark for finding UI elements in high-resolution professional apps; used for Eyes.