Robo Use

Push the block across the table so it rests on the goal position

gymrobotics-fetch-push-s0seed 0 variantGymnasium-RoboticsFetch armManipulationmedium

Reference solution, 65 of 300 steps.

Instruction

A Fetch robot arm with a two-finger parallel gripper stands at a table (adapted from Gymnasium-Robotics, FetchPush-v4, layout seed 0).

Goal: Push the block across the table so it rests on the goal position.

Success: the block centre (obj1_pos) is within 5 cm of goal_pos, judged after you call robo done and the robot has held still for about 10 steps.

In robo observe: hand_pos/hand_vel are the gripper position (m) and velocity (m/s), gripper_open is the finger opening (0 = closed, 1 = fully open) and gripper_width the gap in metres, obj1_pos, obj1_vel and obj1_rot (Euler angles, rad) describe the block, and goal_pos is the target (shown as a red sphere in camera images). The block is a 5 cm cube.

The action robo act DX DY DZ GRIP moves the gripper by up to 5 cm per step along world x/y/z (DX = 1 means 5 cm); GRIP +1 closes the fingers and -1 opens them. The gripper always points down.

How the robot is controlled and scored

You are controlling a simulated robot. Read the task below, then solve it by running the robo command in your shell (start with robo info and robo observe). Keep going until the task is done, then call robo done once. Do not stop to ask questions; there is no human to answer.

How to control the robot

You are the robot's policy. You act only through the robo command in your shell. There is no other way to move the robot, and you cannot read or change the simulator, the scoring, or other files to succeed; the episode server judges the final physical state itself.

robo info                         # action space, available skills, step budget
robo observe                      # robot and object state as numbers
robo observe --image              # also saves a camera image and prints its path (open it to look)
robo act DX DY DZ GRIP [--repeat N]   # low-level action, applied N times (N <= 50)
robo move-to X Y Z [--grip G]     # skill: move the gripper toward a point (if enabled for this task)
robo grip G [--steps N]           # skill: hold position and set the gripper (+1 close, -1 open)
robo done "short summary"         # end the episode and ask for scoring
robo give-up "reason"             # end the episode without claiming success
  • Positions are in metres in the world frame (x, y on the table plane, z up).
  • The episode has a fixed step budget (see robo info); every simulated step counts, including skills.
  • Unless the task says otherwise, success is judged about 10 steps after you call robo done, with the robot holding still, so the goal must still be true when the robot stops.
  • Work in small steps and re-observe after each motion. Call robo done exactly once when finished.

Run this task

bench eval run \
  -d benchflow/robouse-core@0.1 \
  --registry https://robouse.ai/hub/registry.json \
  --agent oracle \
  --include gymrobotics-fetch-push-s0

Pinned to robohub commit 9e672aa1e7f0. The verifier and the reference solution are not published.

Trial
GPT-6 Astra · CodexSolved46 / 30060 sTrial Compare
Kimi K3 · Claude CodeSolved90 / 3002 minTrial Compare
Kimi K3 · mini-swe-agentSolved55 / 3004 minTrial Compare
GLM-5.3 · mini-swe-agentSolved104 / 3003 minTrial Compare
GLM-5.3 · Claude CodeSolved89 / 30069 sTrial Compare
Opus 5.5 · Claude CodeSolved41 / 30038 sTrial Compare
GLM-5.3 · CodexNot solved300 / 3004 minTrial Compare