We’re excited to announce our final challenge partner for the Prompt Finance Hackathon: Aiven.
Aiven is the Helsinki-born data platform powering many builders’ production AI: open source based, fully managed, multi-cloud. Deploy PostgreSQL, Kafka, ClickHouse, OpenSearch, or Valkey on AWS, GCP, or Azure in a few minutes and get back to building. pgvector for RAG, Kafka for agent event streams, ClickHouse for fast analytics on whatever your agents produce — it’s all there, no infra to babysit. Wolt and Supermetrics run production on Aiven. So do thousands of other teams that need real data infrastructure without the operational tax.
The Challenge: Engineering Aiven’s Infra Economics
This is the final chance to apply to the hackathon!
https://luma.com/81o7pkb7
Aalto Entrepreneurship Society
Jaa
We are building a world where people can unleash their full potential through entrepreneurship to make a better tomorrow. More at https://aaltoes.com
11/05/2026
If you’re interested in building hardware products and physical AI, and want to hear about it from those who have done it, this is the perfect place for you.
Join for a roundtable discussion with:
1. Touko Rautiainen — CEO and Co-Founder, Kova Labs
2. Pyry Haulos — CTO, Varjo
3. TBA
We’ll start with quick intros, and then continue with group discussions, where you can ask the speakers any questions about their experience of researching the field and founding a company in it.
Startup Sauna
May 20th - 18:00
https://luma.com/u6pmft17
08/05/2026
Prompt Workshop 1 — Building Skills
For the first Prompt Workshop, we’re going super practical: how to go from “chatting with AI” to building reusable workflows you can run anytime. We’ll learn how to create Claude skills / custom commands and turn them into a personal toolkit — without needing prior AI tooling experience.
Join us for a hands-on workshop on:
• How Claude skills/custom commands work
• Turning a one-off prompt into a reusable workflow you can trust
• A live build-along: everyone builds one skill end-to-end
• A challenge round: build your own skill with support + feedback
• Demos + next steps
Skill level: Beginner
May 18th — 18.00
Startup Sauna
Sign up now:
https://luma.com/kt9c94le
08/05/2026
We’re looking for technical people, who want to build cool s**t, but don’t yet know what real problem they can solve. In this sprint we’ll give you space, guidance and structure to find this problem.
- 2 weeks
- for technical people to find out what they want to build
- come without an idea, solo or with a team
Worst case: you learn how to do market research and outreach, and you’ve tried your best.
Best case: you build a working solution to a real problem and already have a paying pilot customer.
(you can do this alongside your courses and exams)
Apply by May 17th. Sprint runs May 18 - June 1.
https://luma.com/z8lo9slw
“The model providers will steamroll everyone” vs “vertical wins.” We’re turning the discussion into a 3-part series at Startup Sauna.
Navigating Vertical AI Startups Event Series by Prompt, supported by Wave Ventures
The goal is simple: bring Finland’s sharpest operators and investors together to cut through the hype and get concrete about what actually wins in vertical AI right now.
Talk 1 — Tue 19 May: Business models for vertical AI startups
https://luma.com/2xrmutoc
Talk 2 — Thu 21 May: Is the AI market in a bubble?
https://luma.com/3xmn5pj0
Talk 3 — Tue 26 May: GTM strategies for vertical AI startups
https://luma.com/jz5l7uun
Sign up now.
05/05/2026
Prompt Talks EP. 01 — AI in Finance & Mission-Critical Tasks
For the first edition of Prompt Talks, we’re diving into where AI actually works in finance, especially in mission-critical workflows where mistakes are expensive and “almost correct” isn’t good enough. We’re joined by Aleksi Rantala (Founder, Stealth Startup) and Juhana Peltonen (Lead Data Scientist, Ilmarinen) for a fireside chat on what it takes to move from demos to reliable production systems in high-stakes environments.
Join us for a fireside chat on:
Where AI is already creating real leverage in finance (and where it still fails)
What “mission-critical” means in practice: reliability, monitoring, auditability, and controls
How teams manage risk: compliance, evaluation, and human-in-the-loop workflows
The shift from copilots to agents: what’s realistic today vs. hype
What “trustworthy AI” looks like when the output impacts real decisions and money
May 13th — 18.00
Startup Sauna
Sign up now:
https://luma.com/lg8gmuj4
We’re thrilled to announce our second challenge partner for the Prompt Finance Hackathon: Taxxa.ai.
Taxxa.ai is the next-generation AI workspace designed for accounting and auditing professionals. Adopted by more than 4,300 users across 156 client firms in 6 European countries, Taxxa.ai automates research, compliance, client advisory, and communication, freeing teams to deliver higher-value work. Innovative firms including Rantalainen, Grant Thornton Finland, Kleer Group, Klara Consulting, Freedom Group, Leinonen, DFK, Win Win Ekonomi and Aarnio have made Taxxa.ai part of their daily operations.
The Challenge: Agentic GraphRAG for accounting regulatory research
Stay tuned — we will continue announcing partners over the coming days. We currently have a total cash prize pool of 7,000€ and credits and tools on top of that for you to build with.
Applications close on the 13th of May and are accepted on a rolling basis. Apply now.
https://luma.com/81o7pkb7
04/05/2026
Pitching in front of people can feel like a big thing.
That’s why Pitch It works.
The room feels human, but real enough to count.
You can try your idea out loud without huge pressure.
It’s a safe place to do something a little brave.
Come by and see for yourself.
Thursday, May 7 · 18:00
Startup Sauna
luma.com/0q8l1gs6
We’re excited to announce our first challenge partner for the Prompt Finance Hackathon: Sortter.
Sortter is a leading loan comparison platform, combining advanced fintech with a strong focus on innovation and data in the financial space. As a domestic player, Sortter has grown rapidly through innovation, a sustainable, pioneering, and value-driven business model, strong use of data, the normalization of money-related conversations, and a powerful, trusted brand - and is currently dominating the loan comparison market. The Sortter team consists of top experts in business, banking and finance, data, IT, and technology.
The Challenge: Next-level personalization in leading loan comparison
Stay tuned — more challenge partners + details will be announced soon.
Ps. We have a cash prize pool of over 5,000€ along with credits and more ontop of that
Sign up here
https://luma.com/81o7pkb7
Prompt Finance Hackathon
May 23–24, Villa Upinniemi
We’re hosting Prompt’s first hackathon, focusing on finance: a 2-day build sprint to explore what it takes to create agents that can support real business work.
We’re keeping the group tight and high-signal so people can move fast and build seriously.
Sign up now:
https://luma.com/81o7pkb7
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