Render Window — hero
camera + framing set up by the AI contestant
3D Viewport — red-ball User Persp
LOADING 3D VIEW
$0.00Cost
110sDuration
5Tool calls
6Turns
Blender 5.1.0MCP 1.22026-07-15
Tokens: 32564/2470Vision: ✓Votes W-L-T: 0-0-0DONE ✓
B-BENCH — TRANSCRIPT Google / Gemma 4 31b It · r1 · 2026-07-15
RUN LOG — red-ball · Google / Gemma 4 31b It · r1 · ok
SYSTEM PROMPTthe control — every model on this task got these instructions
PROMPTblender-bench v6HARNESSraw-v1
SHOW FULL PROMPT · 1104 chars
You are participating in Blender-Bench, a public benchmark where AI models complete the same Blender task. Your result will be compared head-to-head with another model. Anyone on the internet can vote, based only on the published visual outputs they can inspect: the interactive 3D scene and rendered presentation. Complete the request as well as you can. The benchmark does not prescribe a workflow or visual style; use whichever Blender techniques you consider appropriate. Make the important requirements evident in the published result, save a complete scene, and present the work clearly in every requested output. ## Harness Instructions You are operating Blender through the provided tools. The scene starts empty. Build what the user's prompt asks for in the current scene. Work step by step and verify your own work. Before you finish, set up a camera and lighting to frame a single, well-composed presentation image of your result — position and aim the camera, and add or adjust lights so the subject reads clearly. When you are finished, reply with the single word DONE and no tool calls.
--TASK red-ball: ## Task
Complete the following Blender task:
<task>
A red sphere of 1 meter diameter resting on a white ground plane — touching it
exactly, neither floating nor sunk. Smooth shading, a plain red material on the
ball, plain white on the floor.
The floor is the sphere, the color, and the contact. The ceiling is presentation:
a soft believable shadow under the ball, a hint of glossiness that catc…
56:03>>execute_blender_code({"code":"import bpy\n\n# Clear scene\nbpy.ops.object.select_all(action='SELECT')\nbpy.ops.object.delete()\n\n# 1. Create Ground Plane\nbpy.ops.mesh.primitive_plane_add(size=10, location=(0, 0, 0))\nplane = bpy.context.active_object\nplane.name = \"GroundPlane\"\n\n# 2. Create Sphere\n# Diameter = 1m, so radius = 0.5m\n# To touch the plane at z=0, the center must be at z=0.5\nbpy.ops.mesh.primitive…)
56:03<<Code executed successfully:
56:23>>get_viewport_screenshot({"user_prompt":"A red sphere of 1 meter diameter resting on a white ground plane — touching it exactly, neither floating nor sunk. Smooth shading, a plain red material on the ball, plain white on the floor. The floor is the sphere, the color, and the contact. The ceiling is presentation: a soft believable shadow under the ball, a hint of glossiness that catches the light, and clean framing."})
56:24<<
56:24imgimage delivered — get_viewport_screenshot
56:42>>execute_blender_code({"code":"import bpy\nimport mathutils\n\n# Adjust camera position for a cleaner, more professional composition\ncamera = bpy.data.objects['Camera']\ncamera.location = (4, -4, 3)\n\n# Re-calculate rotation to look at the center of the sphere\ntarget = mathutils.Vector((0, 0, 0.5))\ndirection = target - camera.location\nrot_quat = direction.to_track_quat('-Z', 'Y')\ncamera.rotation_euler = rot_quat.…)
56:42<<Code executed successfully:
56:46>>get_viewport_screenshot({"user_prompt":"A red sphere of 1 meter diameter resting on a white ground plane — touching it exactly, neither floating nor sunk. Smooth shading, a plain red material on the ball, plain white on the floor. The floor is the sphere, the color, and the contact. The ceiling is presentation: a soft believable shadow under the ball, a hint of glossiness that catches the light, and clean framing."})
56:48<<
56:48imgimage delivered — get_viewport_screenshot
57:04>>execute_blender_code({"code":"import bpy\n\n# Set shading to Material Preview or Rendered to see colors in screenshot\n# Note: bpy.context.space_data is only available in the UI context.\n# We will rely on the final render output or the fact that I've set materials.\n\n# Double check the position of the sphere and plane\nsphere = bpy.data.objects.get(\"RedSphere\")\nplane = bpy.data.objects.get(\"GroundPlane\")\n\nif …)
57:04<<Code executed successfully:
57:07ai>DONE
57:07--status: ok · DONE declared
>
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