LLM development · Paris
LLM development company in Paris
GDPR-first, fully documented and hosted in the EU, with a senior team working your morning hours.
Clarigo Infotech is an LLM development company that builds custom applications on large language models such as OpenAI GPT, Anthropic Claude, Google Gemini and open-source models like Llama. We design the prompts, retrieval, tools and guardrails, connect the model to your data and systems, and run it in production with monitoring, evaluation and cost control.
French companies most often hire us for SaaS products, e-commerce platforms and GDPR-compliant AI.
10+
Years of delivery
600+
Projects delivered
20+
Countries served
25-30
Days to a live MVP
Get a free consultation
Tell us what you need. A senior engineer replies within one working day.
Privacy, quality and clear documentation
European teams tell us they want a partner who treats data protection and quality as the starting point, not an add-on. That is how we work.
GDPR by design
Data minimisation, consent, EU hosting and a signed data processing agreement before any personal data is touched.
Documentation you can audit
Written specifications, architecture notes, test reports and handover documents, so your team or auditors can follow every decision.
Accessible by default
Interfaces built to WCAG guidelines, helping you meet the European Accessibility Act for digital products and services.
Predictable contracts
Fixed scope and price, clear milestones and acceptance criteria, and full ownership of the code and IP.
What we build with LLMs
Custom LLM applications
Assistants, copilots and internal tools built around your workflows, not a generic chat window.
LLM integration
Add GPT, Claude or Gemini to your existing product through secure, well-tested APIs.
Open-source and private models
Deploy Llama and other open models on your own cloud when data must stay in-house.
Fine-tuning and evaluation
Tune models on your examples and measure accuracy with test sets before and after launch.
Guardrails and safety
Input and output filtering, PII masking, grounding checks and human review where needed.
Cost and latency optimisation
Model routing, caching and prompt design that keep responses fast and bills predictable.
How we approach LLM development
Choosing the right model
There is no single best model. We compare OpenAI, Claude, Gemini and open-source options on your real tasks for accuracy, speed, cost and data handling, and design the app so the model can be swapped later without a rewrite.
Grounded in your data
Most business value comes from connecting the model to your documents, databases and tools. We use retrieval (RAG), function calling and agents so answers come from your information and actions happen in your systems.
Built for production, not demos
We add evaluation test sets, logging, monitoring, rate limits, fallbacks and cost alerts from day one, so the app keeps working well after launch and you can see exactly what it is doing.
Security and compliance
Data minimisation, encryption, access control and providers configured not to train on your data. For healthcare we build to HIPAA requirements with BAAs in place for any service that touches PHI.
How we work with Paris clients
Time-zone overlap
Central European and Indian working days overlap by three and a half to four and a half hours, so your team is online for stand-ups and calls every morning your time.
The GDPR and the French Data Protection Act (Loi Informatique et Libertés)
We design to the GDPR and CNIL guidance: data minimisation, consent, access controls, encryption, data hosted in France or the EU, and a data processing agreement signed before work starts.
Billing
Invoices in euros (EUR) or US dollars. Typical senior rates are $25 to $49 (USD) per hour, or a fixed price for a defined scope.
Industries we work with in Paris
Paris startups and businesses use us for SaaS, e-commerce and AI products, built to the GDPR with interfaces in French and English.
Luxury and fashion
Maisons invest in premium e-commerce and clienteling. We build AI agents, assistants and automation around these workflows.
Aerospace
Aircraft makers and suppliers need engineering and data software. AI here usually means faster reporting, fewer manual steps and better customer replies.
Tourism and hospitality
Hotels and attractions compete for online bookings. We start with one costly process and automate it end to end.
AI startups
A growing AI scene creates demand for product engineering. We build AI agents, assistants and automation around these workflows.
Meetings in your time zone
Our team's hours, in Paris time
05:30–15:00
Monday to Friday
Overlap with your working day
09:00–15:00
About 6 hours every day
Daily stand-up
09:30
Paris time, plus written updates every evening
Built for how Paris works
Messaging channels
Languages
Local payments
Data hosting
AWS Europe (Paris), Google Cloud europe-west9 (Paris) and Azure France Central, in your own cloud account, so data stays where your rules require.
How it works
Week 1: discovery and design
We agree the use case, success measures and data, and show you a clickable design.
Weeks 2-3: build and integrate
We build, connect it to your systems and data, and demo working software every week.
Week 4: test and launch
We test with real cases, add monitoring and guardrails, then go live.
After launch: improve and scale
The same engineers keep tuning quality, cost and features as usage grows.
See what we've built
Try it yourself, free
Free browser tools from our team. No sign-up needed.
LLM development company: questions from Paris
Do you work with companies in Paris?+
Yes. Clarigo Infotech works with companies across Paris, including Paris, La Defense, Boulogne-Billancourt, as part of clients in 20+ countries. French companies most often hire us for SaaS products, e-commerce platforms and GDPR-compliant AI. We work remotely from India with one in-house team.
What time-zone overlap do we get from Paris?+
Central European and Indian working days overlap by three and a half to four and a half hours, so your team is online for stand-ups and calls every morning your time.
How do you handle the GDPR and the French Data Protection Act (Loi Informatique et Libertés)?+
We design to the GDPR and CNIL guidance: data minimisation, consent, access controls, encryption, data hosted in France or the EU, and a data processing agreement signed before work starts.
Which currency do you bill in, and what does it cost?+
We bill in euros (EUR) or US dollars. Senior engineers typically cost $25 to $49 (USD) per hour, and fixed-scope projects such as an MVP in 25 to 30 days are quoted after a free consultation.
What time are your meetings in Paris time?+
Our team works 05:30–15:00 Paris time, so we overlap with your day from 09:00–15:00. Daily stand-ups are usually at 09:30 your time.
Can you build in French and English?+
Yes. We build interfaces and content in French and English, and test them with native speakers before launch.
Where will our data be hosted?+
Usually in AWS Europe (Paris), Google Cloud europe-west9 (Paris) and Azure France Central, or wherever your data rules require. Everything runs in your own cloud account, so you stay in control.
What does an LLM development company do?+
An LLM development company designs, builds and runs applications powered by large language models: assistants, copilots, document processing, search and agents. Clarigo Infotech handles model choice, prompts, retrieval, integrations, guardrails, testing and production monitoring.
Which LLM should we use: GPT, Claude, Gemini or open source?+
It depends on your task, data rules and budget. We test the options on your real examples and recommend the best fit, and we build so you can switch models later.
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