LIBRA benchmark structure by complexity groups Four complexity groups of LIBRA benchmark datasets, with LIBRA Mini datasets highlighted in amber LIBRA benchmark 18 datasets · 4 complexity groups · 4k–512k tokens Group I — sanity check passkey passkey_with_librusec Group III — multi-hop QA librusec_mhqa ★ long_context_multiq ★ ru_2wikimultihopqa ★ ru_babilong_qa3 ★ ru_babilong_qa1 ru_babilong_qa2 ru_babilong_qa4 ru_babilong_qa5 Group II — QA & multiple choice librusec_history matreshka_yes_no ru_quality ru_sci_fi ru_tpo ru_sci_abstract_retrieval matreshka_names ★ Group IV — complex reasoning ru_sci_passage_count ★ standard dataset LIBRA Mini dataset