FlexAI Powered by Sesterce: The Partnership to Drive AI Innovation Under European Umbrella

At FlexAI, we believe AI innovation should never be limited by infrastructure complexity or by a lack of control over where and how your data is processed. That’s why we’ve partnered with Sesterce, a European leader in high-performance computing, to launch a sovereign AI compute solution that meets the unique needs of companies building AI-based technologies in Europe.

This partnership brings together FlexAI’s Workload-as-a-Service (WaaS) platform with Sesterce’s GPU infrastructure hosted entirely in France, creating a solution that’s as powerful as it is compliant.

What Makes This Truly Sovereign?

At a time when digital sovereignty is more critical than ever, we’ve launched an integrated platform that goes beyond the promise of “EU cloud regions”. Together, FlexAI and Sesterce deliver AI compute operated, hosted, and secured entirely within France, with full European data residency and regulatory compliance built-in.

Compute Physically Hosted in France

All GPU resources are provisioned through secure data centers in France, including NVIDIA H100 and H200. This ensures no trans-border data movement and no reliance on foreign legal frameworks, offering unmatched protection for sensitive AI workloads. Sesterce’s infrastructures leverage cutting-edge cooling and energy efficiency systems, reducing carbon footprint while maintaining high-density compute performance, key for sustainable AI at scale.

Hosting in France also delivers strategic advantages: ultra-low latency connectivity across Europe via major internet exchange hubs, competitive electricity costs with >90% low-carbon power and industry-leading efficiency with PUE 1.1, enabling sovereign AI that is secure, sustainable and economically optimized.

Full EU Data Residency and Compliance

The platform meets stringent GDPR, NIS2, and CNIL-aligned privacy and cybersecurity standards. All orchestration, data storage, and runtime compute stay within the EU, and more specifically, within French legal jurisdiction.

Powerful Solutions for Secure and Resilient AI Workloads

Inference at Low Latency

Ideal for RAG pipelines, chatbots, GenAI APIs, and latency-sensitive applications:

• L40S and H100-based nodes tuned for real-time inference

Fine-tuning and LoRA Workloads

Start fine-tuning within 60 seconds – zero configuration/devops required:

• Plug-and-play fine-tuning tools for QLoRA, PEFT, and native HF Accelerate
• Natively restart trainings from existing checkpointing

Model Training at Scale

Ideal for LLMs, foundation model pretraining, and computer vision pipelines:

• NVIDIA H100 and H200 clusters optimized for large-scale model training through, out of the box support for Deepseed and Flash Attention 2.
• Support for FP8, BF16, and multi-GPU distributed training. Includes auto-scaling and built-in asynchronous checkpointing

Multi-cloud Overflow & Sovereign Failover

Ideal for regulated industries with sovereign compliance needs

• Use FlexAI’s orchestration to burst into sovereign French clusters when your public cloud region is full, restricted, or non-compliant

Containerized Custom Workloads

Full workload tracing, telemetry, and data lifecycle management included.

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FlexAI Powered by Sesterce:
A Platform for European Innovation

With FlexAI’s dynamic workload routing and Sesterce’s sovereign French infrastructure, this partnership unlocks a powerful new paradigm: a truly compliant, instantly accessible, developer-friendly AI cloud for Europe.