# RoboDojo Sim

> A simulated robotics benchmark that measures the average success rate of a model controlling robots across simulated manipulation tasks.

Canonical page: https://benchlm.ai/benchmarks/robodojosim

- Category: [Agentic](/agentic)
- Last updated: November 11, 2026

## About RoboDojo Sim

- Year: 2026
- Tasks: Simulated robot-control tasks (count not published)
- Format: Average success rate
- Difficulty: Embodied agent control
- Paper: [Introducing Claude Fable 5.2 and Claude Mythos 5.2](https://www.anthropic.com/claude-fable-and-mythos-5-2)

Anthropic's launch page reports RoboDojo Sim average success rates at each model's highest available effort, run internally by Anthropic (Gemini 4 Argon at high effort). The task set and harness are not public, so BenchLM keeps it display-only. First added from the Claude Fable 5.2 launch.

RoboDojo Sim is currently displayed on BenchLM for reference, but it is excluded from the weighted scoring formula.

## Leaderboard (5 models)

| Rank | Model | Creator | Score |
|------|-------|---------|-------|
| 1 | [Claude Fable 5.2](/models/claude-fable-5-2) | Anthropic | 64.9% |
| 2 | [Claude Opus 5.5](/models/claude-opus-5-5) | Anthropic | 39.4% |
| 3 | [Gemini 4 Argon](/models/gemini-4-argon) | Google | 34.2% |
| 4 | [GPT-6 Astra](/models/gpt-6-astra) | OpenAI | 29.8% |
| 5 | [Claude Fable 5.1](/models/claude-fable-5-1) | Anthropic | 27.6% |

## FAQ

### What does RoboDojo Sim measure?

A simulated robotics benchmark that measures the average success rate of a model controlling robots across simulated manipulation tasks.

### Which model scores highest on RoboDojo Sim?

Claude Fable 5.2 by Anthropic currently leads with a score of 64.9% on RoboDojo Sim.

### How many models are evaluated on RoboDojo Sim?

5 AI models have published results on RoboDojo Sim in the BenchLM catalog.

### Does RoboDojo Sim affect BenchLM's overall score?

Not directly. RoboDojo Sim is still displayed on BenchLM for reference, but it is excluded from the weighted scoring formula.

## Compare Top Models on RoboDojo Sim

- [Claude Fable 5.2 vs Claude Opus 5.5](/compare/claude-fable-5-2-vs-claude-opus-5-5)
- [Claude Opus 5.5 vs Gemini 4 Argon](/compare/claude-opus-5-5-vs-gemini-4-argon)
- [Gemini 4 Argon vs GPT-6 Astra](/compare/gemini-4-argon-vs-gpt-6-astra)
- [GPT-6 Astra vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gpt-6-astra)