LightOn vs ChatGPT
LightOn is a European alternative to ChatGPT: same ai & machine learning use case, headquartered in France and operating under GDPR by default, while ChatGPT (OpenAI) is based in the United States.
By the EU Alternatives team Last updated
Enterprise generative AI platform with grounded retrieval, document parsing, structured extraction, and deployment from EU cloud to fully on-premise.
- Jurisdiction
- EU / EEA
- GDPR by default
- Yes
- US CLOUD Act exposure
- No
- Open source
- No
- Free tier
- Yes
ChatGPT is the most widely used AI assistant, with a capable free tier and paid Plus, Team and Enterprise subscriptions. Conversations are processed by OpenAI in San Francisco, and free-tier chats can be used to train future models unless you opt out. Prompts and uploaded files therefore leave EU jurisdiction.
- Jurisdiction
- US
- GDPR by default
- Requires DPA + TIA
- US CLOUD Act exposure
- Yes
LightOn vs ChatGPT at a glance
| LightOn | ChatGPT | |
|---|---|---|
| Headquarters | France | US |
| Data jurisdiction | EU / EEA | US law applies |
| GDPR by default | Yes | Requires DPA + transfer assessment |
| US CLOUD Act exposure | No | Yes |
| Open source | No | — |
| Free tier | Yes | — |
| Best for | Teams that need ai & machine learning with EU data residency | Teams already invested in the OpenAI ecosystem |
Choose LightOn if…
- You want your data to stay under EU law without extra legal paperwork
- GDPR compliance or public-sector requirements apply to you
- You want to start free and scale up later
- You'd rather back the European tech ecosystem
Stick with ChatGPT if…
- You depend on integrations only available in the OpenAI ecosystem
- Your organisation has no EU data-residency constraints
- Migration costs outweigh the jurisdiction benefits for now
About LightOn
LightOn is a French enterprise AI platform and Europe's first publicly listed pure-play generative AI company, trading on Euronext Growth Paris since November 2024. Where consumer chatbots stop, LightOn starts: grounded retrieval with citations, document parsing that turns scans and handwriting into structured Markdown, and schema-based extraction, all built for regulated organizations.
Deployment flexibility is the differentiator: run it as SaaS on EU sovereign hosting, in a dedicated cloud, inside your VPC, or fully on-premise where no token ever leaves your infrastructure. Enterprise controls include SSO, RBAC, SCIM provisioning, workspace ACLs for agents, and audit logs, with SecNumCloud compliance available for the most sensitive French deployments.
Key features:
- Grounded retrieval with citations, combining dense and sparse search
- Document parsing for scans, tables, handwriting, and complex layouts
- Structured extraction driven by JSON schemas with async webhooks
- Deployment anywhere from EU SaaS to air-gapped on-premise
- Enterprise security with SSO, RBAC, SCIM, and audit logs
- Free starter tier with pure usage-based pricing, no commitment
- GDPR, SOC 2, and AI Act-ready posture stated across the platform
LightOn SA is headquartered in Paris, France, founded in 2016, and serves Safran, Région Île-de-France, and the French tax authority among others, with partnerships including Orange Business and HPE.
Ideal for European enterprises and public bodies that want ChatGPT-class capability on infrastructure their regulators will accept.
Why choose LightOn over ChatGPT?
The decisive argument is data jurisdiction. ChatGPT is headquartered in US, which means personal data processed through it can be subject to non-EU legal regimes: the US CLOUD Act, FISA 702, or similar laws depending on the provider. After the 2020 Schrems II ruling, EU organisations must carry out a transfer impact assessment for every such data flow.
LightOn removes that overhead. As a France-based provider, it operates natively under GDPR, and data stays inside the EU/EEA by default. For regulated sectors such as health, public administration, and finance, that's not a nice-to-have but a requirement. For everyone else, it's concentration-risk insurance: you avoid depending on a single non-EU jurisdiction that can change the rules without warning.