📢 Call for Papers deadline: November 30, 2026
Last verified: October 17, 2026 · how we verify
Information aggregated automatically. Verify all dates, locations, and pricing on the official conference website before making arrangements.
Apidays Paris is the Paris edition of the global apidays conference series on APIs and the platforms built on them. It addresses API leaders, architects, developers and product managers across industries, and the 2026 program is framed around building trusted, independent and resilient AI ecosystems with APIs, including agentic AI that runs on local infrastructure and respects regional data residency. The event takes place from 1 to 3 December 2026 at CNIT Forest in Paris La Défense. The format combines hands-on workshops, real-world case studies, curated learning tracks and certifications, and a ticket also covers co-located partner events: Hacking APIs Conference Paris, GenerationAI Paris and Green IO Paris. The organisers cite more than 4,000 participants, 1,500 companies and over 300 sessions and speakers. Themes include API monetisation, security, AI-driven automation, LLM APIs, sustainability and platform governance. Attendees gain a broad view of how the API economy is adapting to generative and agentic AI, along with practical design and management techniques and a large professional network. For organisations in Europe weighing sovereignty and resilience in their digital platforms, this API conference in Paris is one of the largest gatherings on the subject.
Apidays Paris 2026 takes place December 1–3, 2026 in Paris, France.
Apidays Paris 2026 is an in-person event.
The Call for Papers is open — submissions close on November 30, 2026.
Travel questions? See Good to know in the travel guide below.
Paris in the first days of December has its Christmas lighting fully installed along the grands boulevards and the Champs-Elysees. An API conference here draws from across French and Southern European engineering, and the city's convention venues are generally well linked by metro. Days are short and often damp, which pushes the value firmly toward indoor culture and long lunches.
Charles de Gaulle (CDG) connects to central Paris by RER B in about 35 minutes, while Orly (ORY) links via the Orlyval and RER or the newer metro line 14 extension. The metro is dense, cheap and the only sensible way to move around. Eurostar and TGV services arrive at Gare du Nord and Gare de Lyon respectively, making rail competitive with flying from London, Brussels and Lyon.
Skip the taxi queue — pre-book a fixed-price airport transfer with Welcome Pickups. Exploring beyond the city? compare rental cars on Auto Europe.
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Metro tunnels now carry mobile coverage on most lines, though it remains patchy in places. An eSIM avoids roaming charges for non-EU attendees. Set up an eSIM with Airalo before you board and you're online the moment you land.
Musee d'Orsay. A converted Beaux-Arts railway station holding the world's principal collection of Impressionist and Post-Impressionist painting. The upper-floor galleries and the great clock face are the highlights. Two to three hours, and late-opening Thursday evenings are noticeably calmer. Tickets on Tiqets →
Sainte-Chapelle. A thirteenth-century royal chapel whose upper level is essentially a cage of stained glass, fifteen windows telling over a thousand biblical scenes. Overcast December light is less dramatic but the crowds are far thinner. Forty-five minutes, and security queues can be long. Tickets on Tiqets →
Le Marais. A historic quarter that escaped Haussmann's demolitions, leaving narrow medieval streets, seventeenth-century mansions and Place des Vosges. It is the most rewarding district in Paris to walk without a plan. Two hours, and Sunday is unusually lively here.
Musee des Arts et Metiers. A museum of industrial and scientific instruments housed partly in a deconsecrated priory, with Foucault's pendulum and early computing machinery. Consistently overlooked by visitors. Ninety minutes, and it is directly on metro line 3. Tickets on Tiqets →
What is the fastest route from CDG?
RER B runs to Chatelet-Les Halles in around 35 minutes. Taxis have a fixed flat fare to central Paris but take longer in traffic.
Is a museum pass worthwhile?
Only for a dense sightseeing schedule. For two or three sites, individual timed tickets booked online are usually simpler and cheaper.
How cold is early December?
Cool and damp rather than freezing, typically between four and nine degrees Celsius, with frequent light rain. An umbrella earns its place.
Travel notes written for Apidays Paris attendees. Links marked above are affiliate links — we may earn a commission at no cost to you. Verify schedules and opening hours on official websites before you travel.
Affiliate links — we may earn a commission at no cost to you.