Arca vs Legora
Arca
arca.legal
Legora
legora.comSide by side
| Figure | Arca | Legora |
|---|---|---|
| Price from | — | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 2 | 1 |
| Spec score · AI Legal Research Software | 8.5 (#2) | 7.7 (#18) |
| Access controls | The platform provides audit logs, granular permissions, and human-in-the-loop controls. | The aOS includes ethical walls, role-based access controls, and audit trails for tool calls, file access, and agent actions. |
| AI data use | Arca says customer data is not used to train general-purpose machine-learning models. | Legora says it will not use customer data to train or fine-tune AI models. |
| Encryption | Arca says data is encrypted at rest and in transit using industry-standard protocols. | The company says data is encrypted in transit using TLS 1.2 or higher and at rest using AES-256, with an option for customer-managed encryption keys. |
| Headquarters | Arca’s own pages list 205 W 28th St, New York, NY 10001. | Stockholm, Sweden |
| Legal research | The platform searches indexed primary legal sources across the United States, European Union, Canada and Asia. | Its legal research capability uses jurisdiction-aware research grounded in sources and provides structured citations. |
| Product | Arca is a platform for deploying legal and compliance agents that perform research, intake and standard operating procedures. | Legora describes its product as an agentic operating system for legal work, supporting research, review, and drafting across complex matters. |
| Security | Arca states that it is SOC 2 Type II certified and GDPR compliant. | Legora says it is ISO 42001 and ISO 27001 certified, meets SOC 2 requirements, operates under GDPR, and does not use customer data to train or fine-tune AI models. |
Plans
In their own words
Legora
Legora is an agentic operating system for legal work, supporting research, document review, and drafting for law firms and in-house legal teams. Its Agent plans, executes, reviews, and delivers complex legal work. Legal research is jurisdiction-aware, grounded in sources, and presented with structured citations, covering case law, statutes, and regulations across global jurisdictions. Tabular Review extracts information from large document sets into an AI-powered spreadsheet. The Microsoft Word add-in supports drafting, redlining, review, template filling, anonymization, writing improvement, and translation while preserving formatting and structure. Customizable Playbooks define review rules for documents such as NDAs and service agreements. Outlook tools summarize threads, draft replies, and save threads or attachments to matters. Legora also describes iManage Cloud access and mobile apps for iOS and Android. It states ISO 42001 and ISO 27001 certification, SOC 2 requirements, GDPR operation, encryption, and no customer-data training. Pricing is on request via demo.