Auto86%Harbor: pendingCodingSafety & Alignment

PLCWorld

PLCWorld: Benchmarking LLM-Generated PLC Programs in Closed-Loop Plant Simulation

A benchmark with 100 synthetic tasks and 473 task-condition pairs evaluating LLM-generated Structured Text PLC programs via closed-loop plant simulation for task success and safety.

How to run

ltb · plcworld
$ npm i -g lettokenburn-cli
$ ltb bench info plcworld

External harness. No Harbor adapter has been generated for this benchmark yet. `ltb bench info` prints the known links.

Runs happen on your machine with your own subscription; only the score summary is pushed. CLI docs

Scores

6 sourced entries
HarnessSourceConfidenceLink
GPT-4o92.8N/AIndependentmediumOct 2, 2026arxiv.org
Claude Sonnet 550.9N/AIndependentmediumOct 2, 2026arxiv.org
Qwen3.5 Plus49.8N/AIndependentmediumOct 2, 2026arxiv.org
GPT-5.537.9N/AIndependentmediumOct 2, 2026arxiv.org
Gemini 3.1 Pro36.2N/AIndependentmediumOct 2, 2026arxiv.org
Gemini 3.8 Flash32.1N/AIndependentmediumOct 2, 2026arxiv.org

Every number links to where it was published. Low-confidence rows are muted and need per-cell verification.

Reproduced by the community

All runs
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About

PLCWorld contains 100 synthetic industrial control tasks (Motion Control, Material Handling) with 473 registered task-condition pairs. It couples Structured Text execution with simulated plant responses to assess control dependencies.

The protocol reports Task Success and Safety Violation separately. Direct GPT-5.5 achieved 82.70% success on Easy cases but only 25.10% on Hard cases, highlighting significant execution gaps.