Why Frontière AI?
Frontière AI is the European gateway to open AI models — an EU sovereign AI gateway through one prepaid OpenAI-compatible API. This page lays out exactly what that means — and what it does not — so your legal and engineering teams can decide on facts.
Five pillars
What Frontière AI is built on
01
European jurisdiction
Know where every request is processed. Sovereign models run on EU providers with no non-EU capital control — OVHcloud, Scaleway, or our own dedicated EU servers. The operating company is French: the corporate structure is designed to keep EU Sovereign workloads outside US jurisdiction.
02
One API
One key, one endpoint, dozens of models. The API is OpenAI-compatible: point base_url at Frontière AI, swap the key, and your existing SDK, scripts and agents keep working. Switching models is a one-field change, not a migration.
03
Verified models
Every model is assessed before it goes live across six criteria: license, provenance, security, GDPR assessment, benchmarks, and API compatibility. What exactly did we verify? The checklist is public, per model, on every model page.
04
No vendor lock-in
No proprietary SDK, no account per model vendor, no rewrite when you switch models. The API speaks the OpenAI protocol, so the rest of your stack — LangChain, n8n, Vercel AI SDK, Open WebUI, LibreChat — plugs in unchanged.
05
Transparent routing
EU sovereign vs fast access is disclosed on every model card and in every API response. When a frontier model is only reachable through US infrastructure, it is labeled “fast access”, never “sovereign” — you choose per call, with full information.
Built for European enterprises
Four workloads where jurisdiction actually matters
The homepage speaks to developers; this section is for the people who sign off: CTO, CIO, DPO, CISO, AI lead. Four recurring cases, and what changes when the infrastructure is EU sovereign.
AI agents
Run your existing agents on European infrastructure. n8n, LangChain, Vercel AI SDK, Open WebUI and LibreChat all work through the same OpenAI-compatible endpoint — no rewrite, no new SDK.
Internal copilots
Protect employee prompts and company documents. Zero prompt retention on API calls: nothing your teams type is stored, logged, or used for training.
Customer-facing AI
Deploy AI without automatically routing company data through US providers. Sovereign models keep the serving path under EU jurisdiction; anything else is labeled before you call.
Regulated workloads
Make infrastructure and model jurisdiction explicit. Per-model jurisdiction labels and zero retention give your DPO a factual answer instead of a marketing promise.
How we compare
Frontière AI vs OpenAI, Anthropic and OpenRouter
The same comparison your procurement team would run. Where a cell depends on deployment choices, the footnote applies.
| Criterion | Frontière AI | OpenAI | Anthropic | OpenRouter |
|---|---|---|---|---|
| EU sovereign infrastructure | ✓ | ✗ * | ✗ * | ✗ |
| Open-weight models | ✓ | Limited | Limited | ✓ |
| One API | ✓ | ✓ | ✓ | ✓ |
| Model jurisdiction visible | ✓ | Limited | Limited | Variable |
| Sovereignty verification | ✓ | ✗ | ✗ | ✗ |
| Prepaid, no subscription | ✓ | ✗ | ✗ | ✓ |
* Depends on the selected infrastructure / deployment model — these vendors can deploy in-region for enterprise plans, but the operating company remains US-controlled and subject to US legal process. Frontière AI figures reflect the default EU Sovereign tier.
Frontière Verified
What exactly did we verify?
Every model carries a 6-criteria verification checklist, public on its model page. A checkmark means we confirmed it ourselves — a missing one means we are still working on it. The same labels are returned in the API response.
Run your first call under EU jurisdiction today
Create an account, top up €10, change two lines. One key for the whole catalog.