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# Claude Opus 5.5 (max) scored 83% on Epoch AI's furniture-assembly test for robot reasoning, the best of 36 models
- URL: https://aiadoption.org/data/ai-furniture-assembly-benchmark/
- Published: 2026-10-31T11:11:13.000Z
- Updated: 2026-11-03T20:42:12.000Z
- Description: On Epoch AI's furniture-assembly benchmark, which tests whether a model can plan the physical steps to put furniture together, Claude Opus 5.5 (max) scored 83%, ahead of GPT-6.1 Sol (max) at 80%.
- Author: Manu
- Tags: Data, Robotics, #chart, #hub-robotics

83%

best furniture-assembly score, Claude Opus 5.5 (max) (Anthropic), of 36 models

## What the chart shows

Epoch AI’s furniture-assembly benchmark asks a model to work out how to assemble real furniture, a test of the physical reasoning robots need. Claude Opus 5.5 (max) (Anthropic) scored 83%, ahead of GPT-6.1 Sol (max) (80%).

It tests the model’s planning, not a robot’s hands: no physical robot is involved.

## Key numbers

| Measure                                 | Value |
| --------------------------------------- | ----- |
| Claude Opus 5.5 (max) (Anthropic)       | 83%   |
| GPT-6.1 Sol (max) (OpenAI)              | 80%   |
| GPT-6 Astra (max) (OpenAI)              | 80%   |
| GPT-6.1 Terra (max) (OpenAI)            | 79%   |
| Claude Sonnet 5.5 (max) (Anthropic)     | 75%   |
| Gemini 4 Argon (high) (Google DeepMind) | 72%   |

## How to read it

- Epoch AI’s own runs; each model’s best score across scorers is shown.
- All models shown were tested in 2026.

**Source:** [Epoch AI](https://aiadoption.org/sources/#epoch-ai), 2026: [Benchmarking Hub](https://epoch.ai/benchmarks?ref=aiadoption.org), read 3 November 2026\. Chart and text by AI Adoption.  
Numbers checked against the published data on 3 November 2026.  
[Download the data (CSV)](https://charts.aiadoption.org/ai-index/csv/ai-furniture-assembly-benchmark.csv?ref=aiadoption.org) · [Cite this chart](#source)