Evaluation · deployment
Open-source French legal AI: opening the model does not open the whole legal stack
Open-source legal AI can provide more control over code or weights, but it does not automatically supply French legal data, licences, retrieval, security or maintenance. Compare the model, corpus, orchestration and operations separately. Self-hosting makes sense when a team can document components, patch vulnerabilities, maintain indexes and evaluate outputs over time.
Scope: French law · information, not legal advice
Open-source–self-hosted–SaaS matrix
The decision concerns a complete system and operating capability, not an isolated licence.
| Dimension | Deployment question | Owner |
|---|---|---|
| Model licence | Check use rights, restrictions, redistribution, modifications and compatibility with your service. | Assign it |
| Data licence | Document provenance, reuse, updates and restrictions for every legal corpus. | Assign it |
| Infrastructure | Encryption, backups, availability, logging and isolation become your responsibility when self-hosting. | Assign it |
| Maintenance | Plan patches, model changes, index rebuilds and regression tests. | Assign it |
| Confidentiality | Local deployment may reduce some transfers but does not remove access, log or insider risks. | Assign it |
| Total cost | Add compute, storage, engineering, security, support, evaluation and reviewer time. | Assign it |
Choose a starting point without entering personal facts
Select a category only. No identity, date, amount, document or free-text question is included in analytics events.
Model licence
Check use rights, restrictions, redistribution, modifications and compatibility with your service.
Keep the output, verify it against the listed sources, then obtain human review for any material decision.
Is there an open-source French legal AI?
Open components exist, but each project must be checked for its model, corpus, licence, maintenance and measured results. Check the source, its date and the full document before using this point in a decision.
Does open source mean free?
No. Licensing, infrastructure, integration, security, evaluation and maintenance all contribute to total cost. Check the source, its date and the full document before using this point in a decision.
Can Légifrance data be self-hosted?
The data has reuse conditions and access methods to verify; document the exact datasets used. Check the source, its date and the full document before using this point in a decision.
Does self-hosting guarantee confidentiality?
No. It shifts responsibility to your infrastructure, access controls, logs and operators. Check the source, its date and the full document before using this point in a decision.
How are legal sources kept current?
Automate versioned ingestion and controls, then test that historical rules do not contaminate current answers. Check the source, its date and the full document before using this point in a decision.
Which skills does the team need?
At minimum, product, data, security, operations and legal expertise capable of evaluating the system. Check the source, its date and the full document before using this point in a decision.
How do I choose between open source and SaaS?
Compare required control, data risk, time, internal capacity, measured quality and total cost. Check the source, its date and the full document before using this point in a decision.
Is Julie open source?
This page makes no such claim. Review the published product and privacy information against your criteria. Check the source, its date and the full document before using this point in a decision.
I am comparing open-source, self-hosted and SaaS AI for French law. Help me build a matrix for licences, data, security, maintenance, quality and total cost.