B2B Companies × Paris
Best AI Agencies for B2B Companies in Paris (September 2026)
Paris agencies with verified B2B client evidence — ranked by depth of documented work, then editorial quality.
Each listed agency evidences at least 2 documented B2B clients. Combined, the agencies below document 37 client engagements.
Ranked agencies for B2B clients
Rankings updated · Newest review
Preste
#1Paris, France
Client evidence: 17 documented clients overall
Best for: Hardware and industrial firms that need computer vision running on the device, not in the cloud, delivered as a 2–6 month build.
Paris, France
Client evidence: 15 documented clients overall
Best for: Large French employers that want their own people building agents rather than a vendor owning them.
Artefact
#3Paris, France
Client evidence: 5 documented clients overall
Best for: Large consumer and industrial groups that want AI agents adopted across a workforce, not piloted in one team.
About this list
Paris's B2B page holds different purchases under one label: a transformation program, an enablement program and an embedded build. Artefact's Bpifrance engagement took agentic AI from experiment to scale across 500 employees at the public investment bank, and what came out was more than 1,500 agents built by the business teams themselves. AI Sisters publishes mostly enablement—AI shows, promptathons and workshops for Accor, Samsung, JCDecaux and VINCI Facilities—and co-builds agents alongside the teams it trains. Preste is the builder: its project cards name the client, the stack and the build time, from a Jetson Orin Nano pipeline inside Greenbig's B:Bot recycling machine to a TensorRT model reading foosball games at 120 frames a second for Tecbak, though none reports an outcome or says whether the system still runs.
Pick the shape before the firm. If the goal is a workforce that builds its own agents, compare adoption evidence—how many people, how many agents, still in use after a year. If the goal is a model running on your own device, ask for the latency and accuracy it held in the field and who maintains it after handover.
Intro by Gabor Kiss, curator · How we rank
Expert Insight
Why B2B fit matters
B2B AI lives inside operational systems, so integration experience is delivery experience—an agency that has shipped into an ERP or a ticketing queue has already fought the battles your project will fight.
Operational outcomes are checkable in a way marketing outcomes are not: handle time, error rate and hours removed either moved or they did not, and the strongest agencies here publish those numbers.
The internal business case matters—an agency whose case studies quantify results gives your sponsor the numbers to defend the budget with.
Frequently asked questions
3 agencies in our directory combine verified B2B client evidence with a Paris base. The current top-ranked are Preste, AI Sisters, Artefact — ordered by depth of documented client evidence, then our editorial scoring (portfolio quality, credibility, completeness); placement is never paid.
Published rates across this page's agencies run €45–85 per hour (median ~€65). Project totals depend on scope — the rate index at /rates breaks the computed bands down by region, country and team size.
Each listed agency has at least two documented, named B2B clients — published case studies or engagement descriptions our research actually read, with source URLs stored per client. Logo walls without published evidence carry no weight, which is what separates this list from self-declared directories.