Render Window — hero
camera + framing set up by the AI contestant
3D Viewport — red-ball User Persp
LOADING 3D VIEW
$0.06Cost
45sDuration
4Tool calls
5Turns
Blender 5.1.0MCP 1.22026-07-15
Tokens: 33560/3130Vision: ✓Votes W-L-T: 0-0-0reasoning: effort mediumNO DONE
B-BENCH — TRANSCRIPT Google / Gemini 3.5 Flash / thinking:medium · r1 · 2026-07-15
RUN LOG — red-ball · Google / Gemini 3.5 Flash / thinking:medium · 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…
54:44>>get_scene_info({"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."})
54:44<<{
"name": "Scene",
"object_count": 0,
"objects": [],
"materials_count": 2
}
54:54>>execute_blender_code({"code":"import bpy\n\n# Set render engine to Cycles if available, otherwise Eevee\nbpy.context.scene.render.engine = 'CYCLES'\nif hasattr(bpy.context.scene, \"cycles\"):\n bpy.context.scene.cycles.device = 'GPU'\n # Use reasonable preview/render samples\n bpy.context.scene.cycles.samples = 128\n bpy.context.scene.cycles.preview_samples = 32\n\n# Create the ground plane\nbpy.ops.mesh.p…)
54:54<<Code executed successfully: Created objects and assigned materials.
55:04>>execute_blender_code({"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.","code":"import bpy\nimport math\n\n# Clear existing cameras and lights\nfor obj in bpy.data.objects:\n if obj.type in ['CAMERA', 'LIGHT']:\n bpy.data.objects.remove(obj, do_unlink=Tr…)
55:04<<Code executed successfully: Set up camera and lights.
55:08>>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.","max_size":1000})
55:09<<
55:09imgimage delivered — get_viewport_screenshot
55:17ai>/edit: We want to preview the camera perspective (rendered mode) to verify materials and composition. Let's write code to position the viewport nicely or render a test. But let's first set viewport shading type to 'RENDERED' or render a low-res image.
Wait, let's render a quick image and save it or look directly through the camera in the screenshot. Let's make sure the camera is aligned and lookin…
55:17--status: ok
>
LOADING COMPLETE TRANSCRIPT…