Auto86%Harbor: pendingAbstract Reasoning

ArgGYM

ArgGYM: A Procedural, Engine-Verified Benchmark for Structured Defeasible Reasoning

A procedural benchmark with a frozen set of 1,440 verified instances evaluating structured defeasible reasoning across twelve tasks using an ASPIC+ argumentation engine.

How to run

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

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

11 sourced entries
HarnessSourceConfidenceLink
DeepSeek V4.1 Flash89.7N/AIndependentmediumSep 29, 2026arxiv.org
Qwen/Qwen3.5-9B81.3N/AIndependentmediumSep 29, 2026arxiv.org
GPT-oss 120B78.1N/AIndependentmediumSep 29, 2026arxiv.org
google/gemma-4-31B-it77.4N/AIndependentmediumSep 29, 2026arxiv.org
google/gemma-4-26B-A4B-it75.1N/AIndependentmediumSep 29, 2026arxiv.org
google/gemma-4-E4B-it69.4N/AIndependentmediumSep 29, 2026arxiv.org
gpt-oss-20b65.7N/AIndependentmediumSep 29, 2026arxiv.org
Qwen/Qwen3.5-4B63.6N/AIndependentmediumSep 29, 2026arxiv.org
Gemini 2.5 Pro60.8N/AIndependentmediumSep 29, 2026arxiv.org
Qwen/Qwen3.5-27B60.1N/AIndependentmediumSep 29, 2026arxiv.org
google/gemma-4-E2B-it13.1N/AIndependentmediumSep 29, 2026arxiv.org

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

Reproduced by the community

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About

Content & Construction: ArgGYM is a reinforcement learning verifiable rewards (RLVR)-compatible environment based on the ASPIC+ framework. It decomposes defeasible reasoning into twelve distinct operations, such as formalization, defeat diagnosis, and theory revision. The benchmark includes procedural generators that create fresh instances while maintaining engine verification.

Scoring & Key Findings: Scoring is grounded in a symbolic argumentation engine computing formal states (e.g., acceptability). A frozen set of 1,440 instances covers fifteen curriculum configurations with varying structural demands and preference orderings. Results show that frontier models differ significantly from open-weight models on specific reasoning profiles.