Sia wins two awards at the Prix des Sociétés de…
Sia x OpenAI
Our Partnership
An OpenAI Advanced Partner, and a founding member of the OpenAI Partner Network
Sia joined the first wave of the OpenAI Partner Network as a Founding Partner in June 2026, and was named an OpenAI Advanced Partner in July 2026.
The Advanced tier recognizes partners with proven delivery capability, sustained client impact and specialist expertise in deploying OpenAI's enterprise AI solutions, including ChatGPT Work, Codex and plugins built on OpenAI's models and APIs.
We help organizations build, deploy and scale AI solutions responsibly and effectively: more useful work from every token and stronger performance per dollar with GPT-5.6, while using ChatGPT Work to turn ambitious goals into finished work.
Becoming an OpenAI Advanced Partner reflects our ambition to help organizations move beyond AI experimentation and achieve enterprise-wide transformation. Our role is not only to bring the best AI technologies to our clients, but to ensure they create measurable business impact through large-scale adoption."
Our Expertise
We pair strategic consulting with hands-on execution: identifying high-impact opportunities, redesigning workflows, building in governance early and sustaining adoption.
Our Forward Deployed Success model embeds Sia teams alongside clients. Born in the digital era, Sia works with leading global technology partners while remaining fully agnostic.
What We Bring
How Sia helps organizations scale, using OpenAI's advanced models.
- Rolling out ChatGPT and Codex enterprise-wide, from strategy to adoption
- Building with Codex, plugins, OpenAI models and APIs
- Serving organizations of all sizes, from mid-sized companies to global enterprises
The OpenAI Partner Network, backed by a $150M investment from OpenAI, brings together a select group of global firms to speed up enterprise adoption of frontier AI.
Adoption & Change
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Adoption strategy
Moving from isolated use cases to lasting, enterprise-wide change.
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Use-case identification
Focusing on high-value, high-impact opportunities.
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Governance
Building in governance, risk and accountability from the start.
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Training
Training teams to embed AI in everyday workflows.
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Change management
Redesigning how work gets done and sustaining adoption.
Build With OpenAI
Operationalizing OpenAI at scale.
ChatGPT Work and Codex in business workflows
Enterprise adoption of ChatGPT Work and Codex across daily operations and core processes, for durable operational change beyond isolated use cases.
Codex for software engineering transformation
Faster software delivery, higher developer productivity and modernized development practices, with AI embedded in live development environments under governance, security and engineering standards.
Selected Projects
From global enterprises to mid-sized companies
Global Organization
10,000+ employees onboarded on ChatGPT and Codex.
Mid-Sized Companies
A Few Hundred licenses deployed, embedding AI in everyday workflows.
The biggest challenge in enterprise AI is no longer the technology—it's adoption. Our FDS model embeds our teams alongside our clients to accelerate deployment, drive lasting behavioral change, and turn ChatGPT and Codex into everyday business capabilities."
Contact Us
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Ségolène Ramadier
Global Head of Tech Partnerships and Ventures | Paris
Ségolène Ramadier is Global Head of Tech Partnerships and Ventures at Sia, overseeing the group's relationships with leading global technology companies and Sia's startup investment fund. After graduating from ESCP, she joined Sia in 2013.
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David Martineau
Managing Partner & Chief AI Officer | Paris
David Martineau is Chief AI Officer at Sia, based in Paris. He supports executive committees and technology leaders across all transformations related to AI adoption. A CentraleSupélec engineering graduate, he has strong expertise in AI, data science, and quantitative analytics.
