Blue brush · sweep forward¶
Agent runs
Each mode of this task runs once per run. Est. cost is tokens at list price (data/prices.yml), never a bill; see the DexToolBench runs for every task of a run.
Codex + GPT-6 Luna, reasoning xhigh (ChatGPT login)default run
| Trial | Started | Agent time | Model requests | Tokens in / out | Est. cost | Grade |
|---|---|---|---|---|---|---|
| U✗ 1h 00m 0% | 09-29 02:15 | 1h 00m | — | 5.6M / 106k | $0.126 | deterministic 1, grader_error 0, n_actions 600, video_rendered 1 |
| L✗ 53m 0% | 09-29 07:09 | 53m | — | 25.3M / 136k | $0.377 | deterministic 1, grader_error 0, video_rendered 1 |
1 other run(s) of DexToolBench
Codex + GPT-6 Luna, reasoning xhigh (Azure OpenAI API, 2026-09-30 stress test)
| Trial | Started | Agent time | Model requests | Tokens in / out | Est. cost | Grade |
|---|---|---|---|---|---|---|
| U✗ 1h 00m 6% | 09-30 17:03 | 1h 00m | — | 21.3M / 227k | $0.360 | deterministic 1, grader_error 0, n_actions 2589, video_rendered 1 |
| L✗ 1h 00m 0% | 09-30 06:48 | 1h 00m | — | 11.9M / 84k | $0.175 | deterministic 1, grader_error 0, video_rendered 1 |
Task instruction (upstream)
Pick up the blue brush and move it through the demonstrated motion (a forward sweep): bring it to each of the 34 goal poses in order.
Recorded by us: SimToolReal's pretrained RL policy replayed in our MuJoCo port of the task, four views (front, side / top, oblique); it reaches 8 of 34 goals here. The green ghost tool is the current goal.
What DexToolBench states about this task
| Defined in | dextoolbench/trajectories/brush/blue_brush/sweep_forward.json |
| Category | brush |
| Object | blue_brush |
| Task | sweep_forward |
| N Goals | 34 |
| Tool Model | assets/urdf/dextoolbench/brush/blue_brush/blue_brush.urdf |
| Table | table_narrow.urdf (plain) |
| Metric | task progress: goals reached / goals (8 grasp-box keypoints within 1.5 cm; 10 s per goal) |
From https://github.com/tylerlum/simtoolreal @ 313d5ae.
Measured on the stack we run — MuJoCo 3.3.7 (CPU, bit-exact replay), KUKA iiwa 14 (MuJoCo Menagerie 1b86ece) + Sharpa HA4, 600 Hz physics, 60 Hz control
| Harness Task | dextoolbench_brush_blue_brush_sweep_forward |
| Oracle | SimToolReal's pretrained policy, recorded in this scene and replayed: 8/34 goals |
Read from run in our MuJoCo port (robot_coding_bench tasks/dextoolbench_brush_blue_brush_sweep_forward, image rcb-mujoco 0.1.1), 2026-09-28.
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Why this task is interesting¶
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