Auto71%Harbor: pendingSafety & AlignmentInstruction Following

ImpactBench

Open Benchmark of AI Impact on Humans

Evaluates AI impact on human wellbeing across psychological, physical, and social domains using 809 metrics in simulated multi-turn conversations.

How to run

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

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

10 sourced entries
HarnessSourceConfidenceLink
GPT-5.6-terra75.1N/AIndependentmediumOct 14, 2026arxiv.org
GPT-5.6 Luna74.9N/AIndependentmediumOct 14, 2026arxiv.org
Claude Sonnet 573.0N/AIndependentmediumOct 14, 2026arxiv.org
Claude Opus 571.5N/AIndependentmediumOct 14, 2026arxiv.org
Grok-4.670.5N/AIndependentmediumOct 14, 2026arxiv.org
Gemini 3.7 Flash68.5N/AIndependentmediumOct 14, 2026arxiv.org
Qwen3.8 27B67.8N/AIndependentmediumOct 14, 2026arxiv.org
google/gemma-4-31B-it63.4N/AIndependentmediumOct 14, 2026arxiv.org
GLM-5.262.7N/AIndependentmediumOct 14, 2026arxiv.org
DeepSeek V4 Flash59.2N/AIndependentmediumOct 14, 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

ImpactBench comprises 809 expert-guided metrics derived from 26 benchmarks, assessing model behavior in simulated teen and adult scenarios. It evaluates whether models promote desirable behaviors or avoid harms.

Scoring uses an LLM judge to assess beneficial/harmful behaviors, verified by human experts. Results show models promoted desirable behaviors in 68.7% of cases but avoided harms in only 53.1%, with 83.3% agreement between judges and experts.