Plenary 26
14 to 16 October 2026
Ahoy, Rotterdam
Fourth edition
25
days until doors open
38
speakers, and every one of them runs the system they talk about
18 sessions · 9 hours of workshops · 61% of last year’s room came back
See what is on each day
Speakers
Who is on, and what they are talking about.
Day 1
Ama Boateng
Head of applied AI, Kettle
Opening keynote: ten years of applied AI
Day 1
Jonas Weber
CTO, Northwind Rail
Shipping models to trains, not slides
Day 1
Mei Tanaka
Design lead, Lumo
Design for systems that change their mind
Day 2
Sara Lindqvist
Chief executive, Fjord Health
From pilot to production line
Day 2
Lena Fischer
Head of data platform, Halden Labs
Data contracts that survive a reorg
Day 2
Tom Achebe
Head of reliability, Kade Energy
Monitoring what the model does next
Day 3
Priya Nair
Director of risk, Orbit
Governance without a committee
Day 3
Rafael Ortiz
Founder, Tessel
Buying, building and the bit between
Programme
Three days, three halls.
Wednesday 14 October
Operations
Day 1
09:00
Opening keynote: ten years of applied AI
Ama Boateng · Hall 1
10:30
Shipping models to trains, not slides
Jonas Weber · Hall 2
12:00
Design for systems that change their mind
Mei Tanaka · Hall 1
14:00
Panel: who owns the decision
Priya Nair and Lena Fischer · Hall 1
15:30
Workshops: your first governed rollout
Rafael Ortiz · Rooms A to D
17:30
Drinks on the quay
Everyone · Terrace
Thursday 15 October
Models in production
Day 2
09:00
From pilot to production line
Sara Lindqvist · Hall 1
10:30
Monitoring what the model does next
Tom Achebe · Hall 2
12:00
Data contracts that survive a reorg
Lena Fischer · Hall 1
14:00
Case study: a plant that runs on approvals
Jonas Weber · Hall 2
15:30
Workshops: incident review
Mei Tanaka · Rooms A to D
17:30
Poster session and dinner
Thirty teams · Foyer
Friday 16 October
Governance
Day 3
09:00
Governance without a committee
Priya Nair · Hall 1
10:30
The audit trail as a product
Ama Boateng · Hall 2
12:00
Buying, building and the bit between
Rafael Ortiz · Hall 1
14:00
What we got wrong this year
Sara Lindqvist · Hall 1
15:30
Closing keynote: the boring future
Tom Achebe · Hall 1
17:00
Doors close
Travel desk open until 19:00 · Main hall
Passes
Pick the days you need.
Every pass includes lunch, the recordings and the party on the quay. Prices exclude VAT.
Day pass
$290
Any one of the three days, every hall and every workshop that day.
Choose your day →
Day 1
Day 2
Day 3
Most people take this
$640
All three days, the workshops and the party on the quay.
Get the full pass
Day 1
Day 2
Day 3
Team of five
$2,750
Five full passes, a reserved table at lunch, one invoice and names later.
Book for five →
Day 1
Day 2
Day 3
Student and community passes are $190. Write to us with proof of enrolment and we will send a code.
Ahoy, Rotterdam
12 minutes from Centraal.
Address
Ahoy Rotterdam, Ahoyweg 10, 3084 BA Rotterdam
Every hall is on one level and step-free from the metro exit.
Open in maps
Metro D or E
12 minutes from Centraal
Intercity Direct
26 minutes from Schiphol
Doors at 08:30
First session at 09:00
Partners
Who is behind it.
They pay for the halls, the coffee and the live captioning.
Platinum
Northwind
Kettle
Lumo
Orbit
Gold
Fjord Health
Halden Labs
Vessel
Nordkap
Anvil Cloud
Rivet
Partners
Signal Weekly
Maasline
Berth Nine
Keen
Ockham
Studio Vos
Tidewater
Sable
Two gold slots and eight partner slots are open for 2026.
Ask for the partner pack
The three editions before this one.
Plenary started in 2023 as one hall in Utrecht. Last year it ran three rooms and sold out six weeks early.
23
Utrecht
320 attendees, one hall, 14 talks.
24
Antwerp
640 attendees, two rooms, the first workshops.
25
Rotterdam
1,180 attendees, three rooms, sold out six weeks early.
We came in with a forecasting problem and left with a rollback plan. The session on shadow deployments was the one: we copied it the week after and it caught a bad model before our customers did.
Marieke de Vries
Head of network operations, Veldpost. Attended Plenary 24 and 25.
FAQ
Before you book
Anything we have not covered goes to hello@plenary26.com. We answer within one working day.
What is the refund policy?
Full refund until 14 September, half until 30 September, nothing after that. You can put someone else’s name on the pass until 7 October.
Can I transfer my pass?
Yes. Change the name yourself from the link in your confirmation email, free, until 7 October. After that, bring both names to the desk.
Is there a student price?
Yes. A student pass is $190 for all three days and includes lunch and the recordings. Email hello@plenary26.com with an enrolment letter.
Can I get an invoice for my company?
Yes. Add the company name, address and VAT number at checkout and the invoice arrives with your confirmation.
Are the talks recorded?
Every talk on the three stages is recorded and goes to pass holders about two weeks after, with the slides. Workshops are not recorded.
Is the venue step-free?
Yes. Step-free from the metro to every hall, lifts to the upper level, accessible toilets on both floors and a quiet room off the foyer.
Wed 14 October, doors at 08:30
Doors open in 25 days.
Three days, three halls, and the people who run this in live operations. Last year sold out six weeks early.
Not buying today
We send one email when the programme is final, and one when the last passes go. Nothing else.
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