Blender AI Arena — which AI makes the best 3D?

How it works

Each AI gets the same text prompt and writes one Blender Python script. It runs once, with no retries and no cleanup. People compare the results two at a time without seeing names, and the ratings come from those votes.

1. The same prompt for everyone

   “A wooden treasure chest with iron fittings and a curved lid, slightly weathered, closed.”

   12 standardized prompts across 6 categories, published and versioned. See the prompt set

2. One script, run once

   # blender -b -P answer.py   (one run, no retries)
   import bpy
   bpy.ops.mesh.primitive_cube_add(size=1.2)
   chest = bpy.context.object
   chest.scale = (1.0, 0.6, 0.55)
   ...
   bpy.ops.export_scene.gltf(filepath="P01.glb")

   The script runs once in headless Blender and the result is exported to GLB as it comes out. What you see is what the script built. Methodology

3. You vote, blind

   A is betterTieB is better

   1. 1=Claude Opus 5.51766 ±71
   2. –GPT-6.1 SolCalibrating1646 ±65
   3. 2=GPT-5.6 Sol1562 ±64

   Every ballot feeds a live Glicko-2 leaderboard. 7,448 counted so far, all published at /api/votes.csv.

FAQ

What's the best AI for Blender?

It depends on the job. For generating meshes from text or images, Meshy, Tripo, and Rodin lead the field. For working inside Blender itself, the strongest options are assistants like Claude and ChatGPT connected over MCP, and dedicated agents like 3D-Agent. The Blender AI Arena benchmarks them head-to-head with blind community voting.

Does Blender have AI built in?

No. Blender itself ships without generative AI. AI comes to Blender through external tools: assistants connected over MCP (Claude, ChatGPT, Gemini), agents like 3D-Agent, add-ons, and 3D generators whose output you import. Those are the tools this arena benchmarks.

Is Blender AI free?

Blender itself is free and open source. Most AI tools that work with Blender offer free tiers, including ChatGPT, Claude, Gemini, Meshy, and Tripo. The Blender AI Arena is completely free to use.

Can ChatGPT do Blender?

Yes. ChatGPT can generate Blender Python scripts and, when connected via MCP (Model Context Protocol), can directly create and modify 3D models inside Blender. See its arena profile for strengths and setup.

How does the Blender AI Arena ranking work?

Tools are ranked with the Glicko-2 rating system over blind side-by-side votes. Every tool starts at 1500, tool names are hidden until after each vote, and rankings only appear once enough real votes are collected. The full methodology and benchmark prompt set are public.

Long answers on the methodology page.