Verified100%Harbor adapterKnowledge & Reasoning

BBH

BIG-Bench Hard

BIG-Bench Hard evaluates advanced reasoning capabilities across 23 challenging tasks using over 6,500 English samples.

How to run

ltb · bbh
$ npm i -g lettokenburn-cli
$ ltb bench pull bbh --n 50
$ ltb bench run ./bbh -a claude-code -m anthropic/claude-opus-4-8
$ ltb bench push

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

Scores

59 sourced entries
HarnessSourceConfidenceLink
gemini-1.5-pro-00189.2N/ASelf-reportedmediumN/Astorage.googleapis.com
DeepSeek-V387.5N/ASelf-reportedmediumN/Aarxiv.org
Gemini 1.5 Pro 001 Feb2484.0N/ASelf-reportedmediumN/Astorage.googleapis.com
Llama-3.1-405B-Instruct82.9N/AIndependentmediumN/Aarxiv.org
Phi-3-medium-128k-instruct81.4N/ASelf-reportedmediumN/Aarxiv.org
Qwen2.5-72B-Instruct79.8N/AIndependentmediumN/Aarxiv.org
Phi-3-small-8k-instruct79.1N/ASelf-reportedmediumN/Aarxiv.org
DeepSeek-V278.8N/ASelf-reportedmediumN/Aarxiv.org
GPT-4-061375.1N/AIndependentmediumN/Aarxiv.org
Phi-3-mini-4k-instruct71.7N/ASelf-reportedmediumN/Aarxiv.org
Yi 34B71.7N/AIndependentmediumN/Aarxiv.org
StableBeluga269.3N/AIndependentmediumN/Aarxiv.org
Llama 2 70B64.9N/AIndependentmediumN/Aarxiv.org
GPT-3.5 Turbo 061361.6N/AIndependentmediumN/Aarxiv.org
Phi-259.4N/ASelf-reportedmediumN/Aarxiv.org
Nemotron-4 15B58.7N/ASelf-reportedmediumN/Aarxiv.org
LLaMA 65B58.4N/AIndependentmediumN/Aarxiv.org
LLaMA 2 13B58.2N/AIndependentmediumN/Aarxiv.org
Mistral-7B-v0.156.1N/AIndependentmediumN/Aarxiv.org
Gemma 7B55.1N/AIndependentmediumN/Aarxiv.org
Gemma 7B55.1N/ASelf-reportedmediumN/Aarxiv.org
Qwen-14B55.0N/AIndependentmediumN/Aarxiv.org
Qwen-14B53.4N/ASelf-reportedmediumN/Aarxiv.org
InternLM 20B52.5N/AIndependentmediumN/Aarxiv.org
Llama 2 70B51.2N/ASelf-reportedmediumN/Aarxiv.org
LLaMA 33B50.0N/AIndependentmediumN/Aarxiv.org
Baichuan-2-13B-Base49.0N/AIndependentmediumN/Aarxiv.org
Baichuan-2-13B-Base48.8N/ASelf-reportedmediumN/Aarxiv.org
Baichuan2-13B-Chat47.2N/AIndependentmediumN/Aarxiv.org
Yi-6B47.2N/AIndependentmediumN/Aarxiv.org
Qwen 7B45.0N/ASelf-reportedmediumN/Aarxiv.org
LLaMA 2 34B44.1N/ASelf-reportedmediumN/Aarxiv.org
LLaMA 2 34B44.1N/AIndependentmediumN/Aarxiv.org
LLaMA 65B43.5N/ASelf-reportedmediumN/Aarxiv.org
Vicuna 13B V1.143.0N/AIndependentmediumN/Aarxiv.org
Baichuan-13B-Base43.0N/ASelf-reportedmediumN/Aarxiv.org
Baichuan-2-7B-Base41.6N/AIndependentmediumN/Aarxiv.org
Baichuan-2-7B-Base41.6N/ASelf-reportedmediumN/Aarxiv.org
LLaMA 33B39.8N/ASelf-reportedmediumN/Aarxiv.org
LLaMA 2 13B39.4N/ASelf-reportedmediumN/Aarxiv.org
LLaMA 2 7B39.2N/AIndependentmediumN/Aarxiv.org
XVERSE-13B38.1N/AIndependentmediumN/Aarxiv.org
MPT 30B38.0N/AIndependentmediumN/Aarxiv.org
LLaMA 13B37.9N/AIndependentmediumN/Aarxiv.org
Falcon 40B37.1N/AIndependentmediumN/Aarxiv.org
InternLM 7B37.0N/AIndependentmediumN/Aarxiv.org
LLaMA 13B37.0N/ASelf-reportedmediumN/Aarxiv.org
MPT 7B35.6N/AIndependentmediumN/Aarxiv.org
Gemma-2B-IT35.2N/ASelf-reportedmediumN/Aarxiv.org
INTELLECT-1-Instruct34.9N/ASelf-reportedmediumN/Aarxiv.org
Top 50 of 59 by score

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

This benchmark comprises the most difficult subset of BIG-Bench, featuring 23 diverse tasks requiring complex reasoning. It is scored via exact-match accuracy on a dataset of approximately 6,511 examples and serves as a rigorous testbed for evaluating model robustness beyond standard benchmarks.