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We build legal AI models for legal tech firms that help them ship smarter products, faster.
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Isaacus is an AI research company building legal superintelligence.
We offer a suite of state-of-the-art information retrieval, classification, extraction, and enrichment models that help supercharge legal AI applications.
As proud supporters of open research, we maintain popular open-source datasets and libraries such as the Massive Legal Embedding Benchmark (MLEB), Legal RAG Bench, Open Australian Legal Corpus, and semchunk.
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A collection of our favorite open-source legal datasets on Hugging Face.
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isaacus/legal-rag-bench
Viewer • Updated • 4.98k • 984 • 23 -
Legal RAG Bench: an end-to-end benchmark for legal RAG
Paper • 2603.01710 • Published • 8 -
The Massive Legal Embedding Benchmark (MLEB)
Paper • 2510.19365 • Published • 18 -
isaacus/open-australian-legal-corpus
Viewer • Updated • 147k • 215k • 90
A collection of our favorite open-source legal datasets on Hugging Face.
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isaacus/legal-rag-bench
Viewer • Updated • 4.98k • 984 • 23 -
Legal RAG Bench: an end-to-end benchmark for legal RAG
Paper • 2603.01710 • Published • 8 -
The Massive Legal Embedding Benchmark (MLEB)
Paper • 2510.19365 • Published • 18 -
isaacus/open-australian-legal-corpus
Viewer • Updated • 147k • 215k • 90
models 7
isaacus/kanon-2-tokenizer
Updated • 4
isaacus/kanon-tokenizer
Updated • 4
isaacus/emubert
Fill-Mask • 0.1B • Updated • 125 • 10
isaacus/open-australian-legal-llm
Text Generation • 2B • Updated • 280 • 12
isaacus/open-australian-legal-phi-1_5
Text Generation • Updated • 27 • 2
isaacus/open-australian-legal-distilgpt2
Text Generation • Updated • 12 • 2
isaacus/open-australian-legal-gpt2
Text Generation • 0.1B • Updated • 129 • 4
datasets 24
isaacus/legal-rag-qa
Viewer • Updated • 328 • 96 • 3
isaacus/legal-rag-bench
Viewer • Updated • 4.98k • 984 • 23
isaacus/open-australian-legal-corpus
Viewer • Updated • 147k • 215k • 90
isaacus/high-court-of-australia-cases
Viewer • Updated • 8.1k • 167 • 3
isaacus/echr-retrieval
Viewer • Updated • 600 • 87 • 2
isaacus/mleb-legal-rag-bench
Viewer • Updated • 5.08k • 213 • 2
isaacus/open-australian-legal-qa
Viewer • Updated • 2.12k • 629 • 19
isaacus/contractual-clause-retrieval
Viewer • Updated • 225 • 399 • 5
isaacus/uk-legislative-long-titles
Viewer • Updated • 234 • 69 • 2
isaacus/australian-tax-guidance-retrieval
Viewer • Updated • 329 • 125 • 6