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Isaacus
Isaacus

Isaacus

Pre-Seed

Isaacus builds foundational legal AI models, APIs, and applications for legal technology builders and enterprise legal teams.

HQ
Surry Hills, NSW, AU
Founded
2025
Overview
Analysis
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Fundraising
Employees
News

Isaacus develops legal AI infrastructure including retrieval and enrichment models, embedding and reranking systems, and a platform API for legal technology builders. Its open-source and research assets include the Massive Legal Embedding Benchmark (MLEB), semchunk, the Open Australian Legal Corpus, and the Open Australian Legal LLM.

The company was established in 2025 by Umar Butler, Abdur-Rahman Butler, and advisor Anthony Butler. In September 2025, Isaacus announced a $700k pre-seed round led by Aura Ventures and Galileo Ventures. It serves customers such as Microsoft, IBM, the World Bank, and several Australian universities, and deploys its systems in cloud, on-premises, and air-gapped environments.

Isaacus - Products & Services

  • Legal AI Platform logo

    Legal AI Platform

    Isaacus Platform provides legal AI models, APIs, and applications for retrieval, classification, extraction, and enrichment.

    Competing Products

    Thomson Reuters logo

Isaacus - Similar Companies

Thomson Reuters logo

Thomson Reuters

thomsonreuters.com

Harvey logo

Harvey

harvey.ai

Claren logo

Claren

claren.law

Alexsei logo

Alexsei

alexsei.com

Legalbook.io logo

Legalbook.io

legalbook.io

Vikk AI logo

Vikk AI

vikk.ai

Legalyze.ai logo

Legalyze.ai

legalyze.ai

Fortuna-Insights logo

Fortuna-Insights

Paxton AI logo

Paxton AI

paxton.ai

Enter logo

Enter

getenter.ai

aiLegal logo

aiLegal

ailegal.com

Claudius Legal Intelligence logo

Claudius Legal Intelligence

Standd logo

Standd

standd.io

Lawformer logo

Lawformer

lawformer.com

Herculex.ai logo

Herculex.ai

Isaacus - Quick Facts

Who are Isaacus' competitors?

Companies similar to Isaacus include Thomson Reuters, Harvey, Claren and Alexsei.

When was Isaacus founded?

Isaacus was founded in 2025.

Where is Isaacus' headquarters located?

Isaacus' headquarters is located in Surry Hills, NSW, AU.

When was Isaacus' last funding round?

Isaacus' most recent funding round was for $700k (USD) in September 2025.

How much has Isaacus raised to-date?

As of Sep 16, 2025, Isaacus has raised a total of $700k (USD).

Isaacus - Classification

Industry
  • Legal Tech
Ownership
  • Venture-backed private company
Technology
  • Artificial Intelligence
Geographic Exposure
  • Australia
Model
  • AI Platform
Revenue
  • B2B Subscription
Customer
  • Enterprise