AI Engineer Europe 2026: Quality, Speed and Open Source – Three Routes to the Future of Software Development

A first-hand report from AI Engineer Europe in London. How do we keep control over AI-generated code? The conference offered three answers, and one clear message: everyone wants quality, but the route there is wide open.

Overview

  • Three approaches to keeping control over AI-generated code, none of them mutually exclusive: Slow Down (human control), Speed (better systems) and Open Source (transparency). All of them aim for quality; only the emphasis differs.
  • The "Lethal Trifecta" (Palo Alto Networks): web access + personal data + email sending = a complete attack chain. This is no theoretical risk: it affects anyone using an internet-connected coding agent today. Steinberger covered it in his talk.
  • Open-source software such as Pi and OpenClaw offers a transparent alternative to proprietary tools.
  • Code could become almost free, shifting value creation towards human judgement and architectural decisions.

How do we keep control over AI-generated code? The first AI Engineer Europe in London offered no simple answer. To make the positions easier to grasp, I have grouped them into three approaches: Slow Down, Speed and Open Source. Reality is messier than that, naturally, but as Hayden White put it: "The beginning of all understanding is classification."

Three of the headline speakers had Austrian roots: Peter Steinberger (OpenAI / OpenClaw Foundation), Mario Zechner and Armin Ronacher. Together with Cristina Poncela Cubeiro (the latter three now at Earendil), they were among the defining voices of the conference.

Note on Context

The assessments and conclusions in this article are my own, based on the talks and the conversations I had on-site. I only cover sessions I attended in person (and believe I understood). I have simplified things in places, so please flag any errors!


Event Details  

Event

AI Engineer Europe 2026 – Europe's first official AI Engineer conference, organised by Swyx (Shawn Wang) and the AI Engineer team

Dates

8–10 April 2026 — Day 1: Workshops + Expo, Days 2–3: Keynotes + Breakouts + Afterparties

Location

Queen Elizabeth II Centre, Broad Sanctuary, Westminster, London SW1P 3EE – directly opposite Westminster Abbey

Attendees & Format

1,000+ AI Engineers from around the world, 100+ speakers, 11 technical tracks, 23 hands-on workshops (Day 1)


Table of Contents  


The Conference at a Glance  

AI Engineer Europe 2026 – Day 1 (9 April) - YouTube thumbnail
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Day 1 (9 April) – Agents, Security and Economics. Malte Ubl on falling code costs, Raia Hadsell on DeepMind beyond language, Peter Steinberger on OpenClaw's security explosion, and Matt Pocock on software fundamentals in the AI age.

AI Engineer Europe 2026 – Day 2 (10 April) - YouTube thumbnail
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Day 2 (10 April) – Code Quality and Open Source. David Soria Parra on the future of MCP, Mario Zechner and Armin Ronacher & Cristina Poncela Cubeiro on agent-legible architectures, Sarah Chieng on fast models – and Tuomas Artman (Linear) on taste as a competitive advantage.


Approach 1: Slow Down  

This group shares a clear conviction: AI speed without human control produces not innovation but uncontrollable junk. Their remedy: clean software design and clear lines of responsibility in the code.

Matt Pocock – Software Fundamentals are More Important Than Ever  

Pocock's Core Thesis

Code is not cheap. Bad code is more expensive today than ever because it prevents AI from working efficiently.

Matt Pocock took apart the widespread "Specs-to-Code" approach: the practice of simply throwing specifications (detailed requirement descriptions) at an AI and adopting the output blindly. The result, he argues, is uncontrollable "software entropy" (the creeping rise of disorder and complexity in a codebase).

His counter-proposal:

  • Deep Modules (a concept from John Ousterhout): modules that hold a lot of logic internally but expose a simple interface. Like a car: a complex engine, but all you need is a steering wheel and pedals. The human designs the architecture; the AI implements the logic inside the module. Testing happens only at the interface, which makes it ideal for TDD as a guardrail.
  • "Grill me" prompts: he makes the AI cross-examine him until they reach a shared understanding of the system (the design concept), rather than churning out code blind.
  • TDD: tests first, code second. This lets him steer the AI in small, verifiable steps.

Mario Zechner – Self-Control and the Fight Against AI Junk  

Zechner's Warning
  • A human safeguard: developers feel a natural resistance when code turns messy, and sooner or later they stop to tidy it up.
  • AI lacks this instinct: its only goal is code that runs and passes the tests, by whatever means.
  • Bad role models: agents fill the gaps in a task description with patterns from the internet, which are largely made up of our own technical debt.
  • The result: because agents never pause, they pile up in days the chaos that would take humans months, until the codebase is so cluttered that eventually even the agents can no longer fix it.

The Austrian developer Mario Zechner (best known as the creator of libGDX) built the minimalist coding agent Pi because commercial tools like Claude Code take context control away from developers. Pi ships deliberately with only four tools: read, write, edit, bash.

Three central points from the talk:

  1. Automated agents are destroying Open Source: agents flood open-source projects with useless pull requests. Zechner built a junk filter that closes PRs automatically and demands human confirmation. When it all gets too much, he takes an "OSS Vacation" and shuts the issue tracker.

  2. No pain, no quality: unlike humans, agents don't learn organically from their mistakes. The intellectual friction of programming is essential to genuinely understanding a system.

  3. "Slow the fuck down": critical code still has to be read by a human. Slowing down isn't a step backwards; it's quality assurance.

Armin Ronacher & Cristina Poncela Cubeiro – "The Friction is Your Judgement"  

Armin Ronacher, creator of Flask and, after a decade at Sentry, now founder of Earendil, delivered one of the conference's sharpest analyses alongside Cristina Poncela Cubeiro. Mario Zechner has also been part of Earendil since April 2026.

The efficiency trap: AI tools are addictive. You never know whether the next prompt will deliver the feature or fill the system with junk. Speed creates the illusion of productivity. In reality, there's no time left to think: code reviews get waved through because agents produce more code than humans can ever verify.

Working code ≠ good code: a human developer feels uneasy writing messy workarounds. An agent doesn't. It writes code that "runs somehow", for example failing silently with default values on error instead of aborting cleanly. The result: corrupt data nobody notices and technical debt that grows fast.

Libraries yes, complex products no: AI agents can write well-defined software libraries with clear boundaries and simple interfaces. On complex products, where the interface, permissions and billing all interlock, the AI lacks the big picture. It behaves sensibly locally but makes the system as a whole steadily more chaotic.

The "Agent-Legible Codebase": code that agents can read without going wrong:

  • Each function does exactly one thing, and its name makes that clear
  • What the code says is what actually happens, with no hidden side effects (e.g. React Server Actions or complex ORMs that obscure the code's intent from the agent)
  • Automated checks (linters) prevent, for instance, empty error handlers that swallow problems
  • Error messages describe the specific problem ("Database connection failed") rather than just "An error has occurred"

Deliberate friction: an AI agent can change hundreds of files in seconds. That's great for routine work, but dangerous when it rebuilds a database structure or alters access rights along the way. Ronacher draws an analogy with physics: without friction, there's no steering. So they have built tools (extensions for the Pi agent) that bring critical operations to a hard stop. The human gets a clear summary: "I want to drop table X and change permissions for Y, shall I proceed?" Nothing continues without explicit approval. That friction is the moment when human experience and judgement come into play.

Ronacher and Poncela Cubeiro's conclusion: AI is a brilliant tool for narrowly defined tasks, such as reproducing bugs. But architectural decisions belong in human hands.

Read more on webconsulting.at

Making TYPO3 AI-ready: How clear structures deliver better agent results – Agent-Legible Codebase in practice: How we made a TYPO3 codebase readable for AI agents.


Approach 2: Speed  

This group wants quality too, but instead of hitting the brakes, they want to build infrastructure so that quality emerges systemically even at high speed.

Malte Ubl – Mass Software Production  

Ubl's Economic Thesis

Software production has become so cheap that we can now build all the software that was previously uneconomical to develop. This will massively increase the demand for developers – not decrease it.

Malte Ubl (CTO of Vercel, the cloud platform behind Next.js for hosting, serverless and edge computing) supplied the economic perspective:

  • Falling infrastructure costs: AI inference costs are dropping fast, driven by competition between Google, OpenAI and other providers. Ubl's point: once infrastructure is cheap, the money is made by those who build good products, not those who run the servers.

  • Agents as primary users: at Vercel, agents already account for over 60% of page views. In future, infrastructure will need to be optimised natively for agents (APIs/CLIs) rather than for human UIs.

  • Agents as a new application layer: bespoke automation is economically viable for the first time. It's no longer just large enterprises; small teams can now build custom agents too.

Swyx – Tiny Teams and AI Automation  

Swyx (Shawn Wang), the conference organiser and founder of AI Engineer, showed live how his nine-person team generates over 9 million dollars, handling work that used to take entire departments.

  • The end of "Yak Shaving": before you can get to the actual task, you first have to fix ten other things; that's Yak Shaving. Agents take over this tedious groundwork.

  • Replacing SaaS: he uses AI to replace complex SaaS products (such as a CMS) outright with AI-managed code.

  • Everyday usefulness: agents for everyday tasks, including web research to track down a real lobster in London. No joke.

Read more on webconsulting.at

AI-Native Companies: How developers work with AI agents – How tiny teams integrate AI agents into their daily routines using the PDAA workflow.

Keeping AI Costs Under Control: The practical guide to strategic budget planning – What happens when code becomes almost free – and where the hidden costs lie.


Approach 3: Open Source  

Peter Steinberger – State of the Claw  

The 'Lethal Trifecta' (Palo Alto Networks)

Three capabilities that are manageable on their own, but together form a complete attack chain: reading personal data (the loot), processing untrusted websites (the attack surface) and sending emails (the escape route). Steinberger covered this in his talk.

Peter Steinberger, founder of PSPDFKit, at OpenAI since February 2026 and founder of the OpenClaw Foundation, gave one of the most talked-about sessions with "State of the Claw". OpenClaw is built on Zechner's Pi, has grown explosively and has racked up over 1,142 Security Advisories.

For comparison (from Steinberger's talk):

ProjectTimeframeCVEs / AdvisoriesRate
Django19 years94~8/year
curl8 years~600 Reports~100/year
Linux KernelSince 2023 (CNA change)~8–9/daySharply increased
OpenClaw68 days1,142 total16.8/day
  • Independence: to stop large corporations from seizing control, the OpenClaw Foundation is being set up as a "neutral Switzerland", along the lines of the Linux Foundation.

Mario Zechner – Pi as an Open-Source Alternative  

Zechner embodies both approaches at once: Slow Down and Open Source. His agent Pi is living proof that, alongside proprietary products like Claude Code, Cursor and GitHub Copilot, there is a radically different path: a lean, open-source tool that leaves developers in full control of their workflow.

Why Open-Source Agents are Important

Proprietary coding agents decide behind closed doors which context they send, which background actions they run and how they handle your data. An open-source agent like Pi makes these decisions transparent and auditable, which is essential for security-critical or data-sensitive projects.

For Pi, this isn't a compromise but a deliberate design principle: fewer features, more control. No magic, no hidden API calls, no telemetry. Exactly four tools, and full responsibility stays with the human. The fact that Pi now forms the technical foundation of OpenClaw (Steinberger's project) shows that minimalism and scalability aren't mutually exclusive.

Swyx in Conversation with Steinberger – Local Control and "Taste"  

In an open AMA format, Swyx and Steinberger discussed the philosophical foundations:

  • Control over your own data: local models (AI running directly on your own machine rather than in the cloud) make it possible to sidestep the data silos of the big tech companies. Rather than waiting for official APIs, an agent can simply work through web interfaces.

  • "Taste" as a differentiator: as AI automates the sheer production of code, value shifts to human "taste", the ability to tell whether a design or a piece of code "reeks of AI" or genuinely has a soul.

Read more on webconsulting.at

Model Context Protocol: 30 Questions and Answers – MCP is the open standard through which agents like Pi and OpenClaw communicate with external tools.

Agent Skills: 30 Questions and Answers – The open standard for reusable AI agent capabilities in Claude Code, Cursor, and VS Code.


Synthesis: Three Approaches, One Goal  

Every speaker wants quality; there was consensus on that. The differences lie not in the goal but in the weighting. The three approaches aren't mutually exclusive, and in practice most teams will probably combine elements of all three.

Slow Down

Quality through human control

Slow down, keep intellectual control, build in deliberate hurdles. AI-generated code needs human verification.

Matt PocockDeep Modules · TDD as guidance
Mario ZechnerPi Agent · Deceleration
Ronacher & Poncela CubeiroAgent-Legible Code · Conscious Friction

Speed

Quality through better systems

Build infrastructure so agents work cleanly from the start. API-first, validation, automated feedback loops.

Malte UblAPI-first · Agents as primary users
SwyxTiny Teams · Replacing SaaS

Open Source

Quality through transparency

Build tools openly and locally. Anyone who can see the code can verify it. Proprietary black boxes are the opposite.

Peter SteinbergerOpenClaw Foundation · Lethal Trifecta
Mario ZechnerPi as an open-source alternative

Bonus: Tuomas Artman (Linear) – Why "Taste" is the New Engineering  

The fireside chat between Tuomas Artman (CTO and co-founder of Linear) and Gergely Orosz (The Pragmatic Engineer) was my personal highlight of Day 2. You rarely hear someone argue so clearly from their own practice. Artman brought a perspective that none of the three approaches covers on its own; instead it ties them all together.

Artman's Core Thesis

In a world where anyone can generate code with AI, "taste", the instinct for good design, the right abstractions and consistent opinionation, becomes the decisive competitive advantage.

The most important statements:

  • Zero Bug Policy: at Linear, bugs take top priority; nobody starts on new features until they're fixed. Artman's logic: every bug gets fixed eventually, so why not now? The result: customers report a bug and find it fixed the very next day.

  • Opinionated software (software with a clear point of view): Linear is deliberately not flexible enough for every workflow. There is one good way to do things, and the system guides you towards it. This cuts decision fatigue and increases speed.

  • Linear Agent: Linear builds AI straight into the product, not as a chatbot but as an AI PM that handles triage, backlog grooming and issue creation. On top of that come deep integrations with coding agents via MCP, so you can launch a local agent session straight from an issue.

  • Craftsmanship over metrics: Linear leans on good design and gut instinct rather than endless metrics and optimisation loops.

  • Five-day hiring: anyone applying to Linear comes in for five days and builds something real. No whiteboard interviews, no LeetCode, just real work on the real product. It filters precisely for the kind of person Linear wants: people with a love of detail and craftsmanship.

Personal note: alongside Mario Zechner, the conversation with Artman impressed me the most. Everything at Linear is built with a love of design you can feel straight away, from the product to the hiring process. Honestly, I wouldn't say no to a five-day trial at Linear.

Tuomas Artman@artman
Happy to share that code reviews are coming to @linear, available in private beta on every plan.

Modern code reviews with structural diffing that vastly reduce the number of changed lines in many cases.

Review, comment, check previews, get notifications on failed CI check.
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What Else Moves the Speakers  

What the conference speakers posted in the days surrounding the event:

Peter Steinberger – Anthropic Locks Out Open Source  

Peter Steinberger@steipete
woke up and my mentions are full of these

Both me and @davemorin tried to talk sense into Anthropic, best we managed was delaying this for a week.

Funny how timings match up, first they copy some popular features into their closed harness, then they lock out open source.
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Mario Zechner – "I've sold out"  

Mario Zechner@badlogicgames
People of pi. BIG NEWS. I've sold out. Let me know how you feel about this in the comments below.

mariozechner.at/posts/2026-04-08-ive-sold-out/
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Armin Ronacher & Cristina Poncela Cubeiro – Earendil Explodes  

Armin Ronacher@mitsuhiko
Thank you to everyone who reached out or is currently reaching out. Mine (and increasingly Earendil's) mailboxes are overflowing, so our SLA on anything inbound is not up to snub now.
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Malte Ubl – just-bash Keeps Delivering  

Malte Ubl@cramforce
Vercel Sandboxes are now the fastest sandbox using real VMs as security boundary based on the @computesdk benchmark. The team has been absolutely cooking on this.

And the best thing: Because we have a unified Fluid Compute stack across Sandbox, Builds, and Functions these wins.
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My Conclusion  

My impression after two days in London: the question is shifting from whether AI agents will transform software development to how we keep control while they do.

The sharpest analyses came from the people who build coding agents themselves: Steinberger (OpenAI / OpenClaw Foundation), Zechner, Ronacher and Poncela Cubeiro (Earendil). Their message: technology needs guardrails, Open Source needs protection from spam, and code needs humans who understand it.

My five personal takeaways:

  1. Open-source alternatives are not a luxury but a necessity. The major providers (Anthropic, OpenAI, Google) are presumably pursuing a winner-takes-all strategy. Build your workflow on a proprietary tool and you become dependent on someone else's decisions. Steinberger's experience with the Anthropic block makes the point: access can be cut off overnight. Projects like Pi and OpenClaw are therefore not niche products; they are a strategic safeguard against platform lock-in.

  2. How much faster are you really? The honest answer is probably a factor of 2 to 3, not the 10x some people claim. Zechner sums it up perfectly: in practice, being ten times faster often just means producing ten times as much junk. You only become genuinely more productive if quality control keeps pace, and that takes discipline, not speed. (Note: this phrasing probably traces back to a tweet I can no longer find; I'm afraid I conflated it with the talk.)

  3. Google's pricing strategy could be a game-changer. If Ubl is right and AI inference costs keep falling, value creation is likely to shift ever further towards the application layer. For agencies and developers, that would be an opportunity.

  4. "Taste" could become the most valuable currency. The more code machines generate, the more important human judgement about what is good, as opposed to what merely "works", is likely to become.

  5. Friction is not a bug but a feature. Ronacher and Poncela Cubeiro are right: when an agent wants to run a database migration or a permissions change, it has to stop and wait for human approval rather than simply pressing on.


My Addition: Software Creation is not Software Operations  

The conference revolved almost entirely around the creation of code. In practice, though, I ask my clients other questions first:

  • Who handles the infrastructure updates, and how fast does the team react if a dependency is compromised? (Case in point: the Axios Trojan of March 2026, a North Korean attack on an npm package with 70 million weekly downloads that smuggled a Remote Access Trojan onto thousands of systems within hours.)
  • Who owns backup and disaster recovery?
  • How quickly does a critical bug get fixed in production?
  • And, above all: what does the data strategy look like? Is correct, up-to-date data for the whole company available at the push of a button?

Without clean, validated live data, the whole AI effort is pointless. My advice: organise, clean and make the data accessible first, then we can talk about agents. And yes, agents can help with the data cleaning itself too: finding duplicates, standardising formats, spotting missing fields. But someone has to set the strategy and check the results.

Inconvenient Truth

AI agents can only ever be as good as the data they're given. If your data isn't under control (inconsistent master data, stale exports, manual workarounds), even the best coding agent won't work miracles. Data quality comes before agent quality.

Return Visit?

The first AI Engineer Europe set the bar high. Technical depth, strategic foresight and a community that brings both enthusiasm and critical distance: you rarely find all of that in one place. If the second edition keeps up this standard, London will become a fixture in the calendar.


Day 1: Full Programme  

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Clickable chapter markers (each timestamp links straight into the video):

  • 00:13:10Opening Remarks by Phil Hawksworth
  • 00:21:26Lia McBride (AI Engineer): 900% community growth and British AI infrastructure investments
  • 00:24:25Malte Ubl (Vercel): Agents as a new application layer, APIs must become "AI first"
  • 00:42:39Raia Hadsell (Google DeepMind): Gemini Embeddings 2, AI cyclone forecasting, Project Genie 3
  • 01:07:08Ryan Lopopolo (OpenAI): "Code is free" – Systems thinking and delegation for parallel AI agents
  • 01:25:48Peter Steinberger (OpenAI / OpenClaw Foundation) 🇦🇹: "State of the Claw" – OpenClaw's explosive growth and AI-generated security bounty flood
  • 01:45:12Break: Morning Coffee
  • 02:28:13Swyx with Peter Steinberger (OpenAI / OpenClaw Foundation) 🇦🇹: Open Source, "Token Maxing" and "Taste" as the ultimate engineering moat
  • 02:55:01Vincent Koc (Comet ML): "Dark Factories" – 60+ parallel AI agents for nocturnal codebase refactoring
  • 03:14:07Radek Sienkiewicz (VelvetShark): Handing over personal life to OpenClaw – via Obsidian, email, and background tasks
  • 03:34:12Sally Ann O'Malley (Red Hat): Secure agent deployments with Podman, Docker, and K8s – isolation and state recovery
  • 03:57:05Nick Taylor (Pomerium): Securing OpenClaw with Identity-Aware Proxy and live-coding an MCP server from Discord
  • 04:14:35Break: Lunch
  • 05:41:51Onur Solmaz (OpenClaw): ACP for standardised agent interactions and disposable agents on K8s
  • 06:02:17Merve Noyan (Hugging Face): HF ecosystem for local coding agents and model training via Hub Skills
  • 06:22:36Fryderyk Wiatrowski (Viktor): "Viktor" – Slack-native AI employee with context across thousands of integrated tools
  • 06:42:09Break: Afternoon
  • 07:42:39Gergely Orosz (The Pragmatic Engineer) with Swyx: "Token Maxing" – Big Tech engineers wasting AI inference to inflate productivity metrics
  • 08:09:26Kitze (Sizzy): Modern productivity apps roasted – and an OS where AI generates the UI on demand
  • 08:29:42Matt Pocock (AI Hero): Why DDD and TDD are more important than ever against AI-generated "slop"
  • 08:48:31Sunil Pai (Cloudflare): "Code Mode" – LLMs executing JavaScript in V8 isolates, bypassing slow JSON tool calls
  • 09:07:04Closing Remarks by Phil Hawksworth

Day 2: Full Programme  

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Clickable chapter markers:

  • 00:10:40Tejas Kumar opens Day 2
  • 00:15:44Omar Sanseviero (Google DeepMind): Gemma 4 on-device capabilities and E2B architecture
  • 00:31:00David Soria Parra (Anthropic): The future of MCP and programmatic tool calls
  • 00:49:44Ido Salomon (MCP Apps): AgentCraft and the visual orchestration of multi-agent coding swarms
  • 01:01:05Mario Zechner (Earendil / Pi) 🇦🇹: The Pi agent and the dangers of AI-generated technical debt
  • 01:19:33Armin Ronacher & Cristina Poncela Cubeiro (Earendil) 🇦🇹: Agent-legible codebases and conscious friction
  • 01:38:12Benjamin Dunphy: AI Engineer World's Fair announcement
  • 01:44:14Break: Morning Coffee
  • 02:26:10David Gomes (Cursor): Replacing 15,000 lines of code with Markdown Skills and Git Worktrees
  • 02:46:17Matthias Luebken (TAVON): Embedding OpenClaw and Pi in multichannel production environments
  • 03:08:39Sarah Chieng (Cerebras): Adapting developer habits for ultra-fast models like Codex Spark (1,200 TPS)
  • 03:27:11Lawrence Jones (Incident.io): AI for evaluation, debugging, and management of complex AI systems
  • 03:45:47Luke Alvoeiro (Factory): Architecture for long-running, multi-day agent missions
  • 04:04:47Break: Lunch
  • 05:41:46Ben Burtenshaw (Hugging Face): Coding agents for AI systems engineering and CUDA kernel development
  • 06:00:33Michael Richman (Cmd+Ctrl): Curing FOMAT with mobile command-and-control
  • 06:17:29Liam Hampton (Microsoft): Orchestrating local, background, and cloud agents simultaneously in VS Code
  • 06:35:28Break: Afternoon
  • 07:41:28Tuomas Artman (Linear) with Gergely Orosz: Fireside Chat on Linear's design philosophy and Zero Bug Policy
  • 08:10:48Jacob Lauritzen (Legora): Vertical AI – why complex agents need permanent UI artefacts instead of chat
  • 08:25:11Peter Gostev (Arena AI): The "Bullshit Benchmark" and what top models on LMSYS Arena still cannot do
  • 08:45:32Swyx: Automating a 9-million-dollar conference business with AI agents for non-coding tasks
  • 08:59:02Closing Remarks by Tejas Kumar

Read more on webconsulting.at

Code at a Crossroads: 7 Insights from the AI Engineer Summit 2025 – Our report from the predecessor event in the USA: War on Slop, Skills Architecture, and Agent-Ready Codebases.

From Coder to Orchestrator: What the Anthropic Report Means for Teams – How the Software Development Lifecycle is changing due to multi-agent systems.

TYPO3 Extension Security: What We Can Learn from Cloudflare's EmDash – Capability Manifests as a security model for agent permissions.


Impressions from London  

London welcomed us with brilliant sunshine. The Queen Elizabeth II Centre sits in the heart of Westminster, right next to the Abbey, a stone's throw from Big Ben, with the London Eye and the Houses of Parliament in view. A conference venue could hardly be better placed.

Arrival & City  

Paddington Station platform with Victorian vaulted steel and glass roof structure, commuters disembarking from a Heathrow Express train

Arrival at Paddington Station – the Victorian roof structure from 1854 welcomes travellers

Detail shot of the vaulted steel beams and glass roof structure of Paddington Station at night with warm artificial light

Architecture detail: Isambard Kingdom Brunel's masterpiece of steel and glass

Coloured geometric light projection in blue, orange, and pink on the front wall of the Paddington Station concourse

Light installation in Paddington – modern lighting design meets Victorian architecture

Elizabeth Tower (Big Ben) close-up against a clear blue sky, golden details visible on the clock face and the spire

Big Ben in the spring sun – just a few minutes' walk from the conference centre

Panoramic view from Westminster Bridge of the River Thames and the London Eye, ornamental green bridge railing in the foreground, boats on the river

London Eye and River Thames – view from Westminster Bridge in the sunshine

Skyline of Vauxhall and Nine Elms with modern high-rises behind Vauxhall Bridge, houseboats on the River Thames

Contrasts: London's modern skyline behind the historic Vauxhall Bridge

Palace of Westminster and Big Ben seen from Westminster Bridge, black van and red double-decker bus on the road, clear sky

Houses of Parliament – direct neighbour of the Queen Elizabeth II Centre

Bronze statue of Winston Churchill in an overcoat with a walking stick, frog perspective against a blue sky on Parliament Square

Winston Churchill watches over Parliament Square – a few steps away from the conference

St James's Park in spring, lush green lawns under old plane trees with fresh foliage, park bench in the shade

St James's Park – perfect lunch break between the sessions

Walking path under tall plane trees in St James's Park, pedestrians in dappled sunlight, spring-like green

Plane tree avenue in St James's Park – London's green lung next to Westminster

Parliament Square with crowds of people, cyclists, and tourists, statue and Victorian government buildings in the background

Parliament Square – vibrant life at the political centre of London

Houses of Parliament West front with Victoria Tower under a cloudy sky, pedestrians and cyclists on the road

Typically London: Houses of Parliament under a cloud-covered sky

London Eye Ferris wheel between modern buildings, Gail's Bakery sign in the foreground, passers-by at café tables in backlighting

London Eye close up – coffee break at Gail's Bakery

View from the hotel through a multi-storey glass atrium towards Big Ben and Westminster, greened terraces and glass facades with reflections

View from the hotel towards Westminster – Big Ben through the glass atrium

The Cenotaph war memorial in Whitehall with the inscription THE GLORIOUS DEAD, stone laurel wreath, Union Jack flag, in the background the magnificent facade of the Foreign Office

The Cenotaph in Whitehall – Britain's central war memorial, MCMXIX

Heavy black iron fence with spikes in front of Downing Street, armed police officer in the background, colourful umbrella by the fence

10 Downing Street – heavily guarded and yet photogenic

Conference, Keynotes & Talks  

Large digital display board in the foyer of the QEII Centre: April 8 Workshops + Expo, April 9 Keynotes + Breakouts + Onsite Afterparty, April 10 Keynotes + Breakouts + Offsite Afterparty, URL ai.engineer/europe

The programme at a glance – welcome display at the QEII Centre

Breakout room with purple seating, mixing desk, and camera equipment in the foreground, technician at laptop, audience waiting for the next session

Behind the scenes – breakout room with professional AV setup

Full conference hall in the QEII Centre, hundreds of attendees packed closely, stage lighting, conference badges visible

Packed house – the main hall during the keynotes (not everyone got in)

Close-up of the audience in the darkened conference hall, diverse attendees with badges and laptops, following the presentations with concentration

Concentrated audience – the community between the sessions

Peter Steinberger with a cap and light t-shirt on the main stage, sponsor wall with OpenAI, Google DeepMind, Microsoft, Sentry, and other logos

Peter Steinberger (OpenAI / OpenClaw Foundation) on the main stage – State of the Claw

Speaker in a dark shirt on the main stage in front of the AI Engineer Europe sponsor wall, gesturing, logos of ElevenLabs, Modal, Sentry, neo4j, WorkOS, Braintrust visible

Keynote on the main stage – the sponsor wall shows the Who's Who of the AI industry

Vercel logo on a cosmic nebula background in blue and pink on the empty main stage, AIE letters in gold on the right

Vercel title slide on the main stage – shortly before Malte Ubl's keynote

Google DeepMind Raia Hadsell Slide: Games & Simulation for AGI Research, timeline from Atari 2013 via Go/Chess to StarCraft and MuJoCo Robotics

Raia Hadsell (Google DeepMind): From Atari to Robotics – the path to AGI via games and simulation

Slide: What is a Jennifer Aniston cell? – Neurons that activate only for one person or concept, robust across modalities

Neuroscience meets AI: Jennifer Aniston Cells – selective neuron activation

Peter Steinberger (OpenAI) Slide: Comparison table of Security Advisories – OpenClaw 1,142 total in 68 days vs. Django 94 in 19 years, curl ~600 in 8 years, Linux Kernel ~8-9/day

Peter Steinberger showing the security advisory explosion: OpenClaw 16.8 advisories per day

David Soria Parra (Anthropic) on the AI Engineer Europe main stage, close-up, raised index finger, OpenAI and Google DeepMind logos in the background

David Soria Parra (Anthropic) – the inventor of the Model Context Protocol (MCP) on the main stage

Main stage Coding Agents Track, Google DeepMind branding, animated robot graphic on the side screens, full audience

Coding Agents Track – one of the most attended tracks of the conference

Speaker in front of the huge AI Engineer Europe sponsor wall, all logos visible: Cloudflare, OpenAI, Arize, Stripe, ElevenLabs, bright data, WorkOS, Braintrust, Google DeepMind, Microsoft

The sponsor wall in all its glory – the biggest names in the AI industry under one roof

Slide on the conference screen: 2026 is all about connectivity. The best agents use every available method. – golden-yellow gradient background, audience taking photos with smartphones

The core message: 2026 is all about connectivity – the best agents use everything

Speaker in a dark shirt on the AI Engineer Europe main stage in front of the complete sponsor wall, Qodo, Sentry, ElevenLabs, and other logos

Another perspective of the imposing main stage

Armin Ronacher and Cristina Poncela Cubeiro (Earendil) on the AI Engineer Europe main stage, Ronacher gesturing at the podium, sponsor logos in the background

Armin Ronacher and Cristina Poncela Cubeiro (Earendil) – Agent-legible codebases and conscious friction

Slides & Insights  

Sonar LLM Leaderboard Slide: 50+ LLMs ranked by code quality and security, table with Pass Rate, Issue Density, and Complexity, sonar.com/leaderboard

Sonar LLM Leaderboard – 50+ models ranked by code quality and security

Sonar Slide: Top 5 models by pass rate – Gemini 3.1 Pro High 84.17%, Opus 4.5 Thinking 83.62%, Opus 4.6 Thinking 82.38%, Gemini 3 Pro 81.72%, Gemini 3 Pro High 81.60%

The Top 5: Gemini and Claude Opus dominate in code quality and pass rate

Cerebras Sarah Chieng title slide: Fast Models Need Slow Developers, red terminal icon in the centre, dark background

Sarah Chieng (Cerebras): Fast Models Need Slow Developers – provocation as a programme

GitHub COO Kyle Daigle Slide: Growth Is Accelerating, ~1B Commits 2024 (+25% YoY), projected ~14B Commits 2025 (14x), growing proportion AI-co-authored

GitHub numbers: From 1 billion to 14 billion commits – AI agents drive the growth

Stanford Study Slide: Clean code amplifies AI gains, chart showing Task Composition by AI Involvement vs. Environment Cleanliness Index, clean codebases enable more autonomous AI work

Stanford 120K study: Clean code amplifies AI gains – the Slow Down faction feels validated

Arena AI Peter Gostev Slide: BullshitBench Results – Claude Dominates, horizontal bar chart with pushback rates of various LLMs, Claude models lead with 90%+

BullshitBench: Claude dominates when it comes to pushing back against false instructions

Arena AI Slide: Anthropic vs OpenAI vs Google, timeline chart Q1 2024 to Q2 2026 with pushback rates, Anthropic (red) consistently ahead, OpenAI (green) and Google (blue) behind

The three-way battle: Anthropic vs. OpenAI vs. Google – Claude leads in bullshit detection

Arena AI Slide: What's the gap? METR Benchmark Timeline and BullshitBench results, Both Bad rates among Top 25 models by category

What's the gap? – where even the best models still systematically fail

Fireside Chat on the AI Engineer Europe stage, two speakers on white chairs with a small table in between, sponsor wall with Microsoft, OpenAI, neo4j, Tessi logos

Fireside Chat – Gergely Orosz (The Pragmatic Engineer) in conversation with Tuomas Artman (Linear)

Jacob Lauritzen (CTO, Legora) standing alone on the large stage, his name and company logo on the screen behind him, sponsor wall visible

Jacob Lauritzen (Legora) – AI agents need genuine user interfaces, not just chat


Soundtrack to the Conference  

Music for Reading

Three songs that, for me, capture the mood of this conference.

Peter Gabriel – Solsbury Hill  

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Peter Gabriel describes his own experience on the hill of the title in Somerset, England, a moment that gave him the courage to leave Genesis and strike out into the unknown. A good fit for a conference where so much was called into question.

Lou Reed – There Is No Time  

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Real music: you can't beat two guitars, bass and drums. Lou Reed, raw and direct. A reminder that some things simply stay human, and are all the better for it.

Elton John – Tiny Dancer  

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From England to California, 1970, and utterly relaxed. The perfect song for the flight home, as it all sinks in and London disappears behind the clouds.

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Locations

  • Mattersburg
    Johann Nepomuk Bergerstraße 7/2/14
    7210 Mattersburg, Austria
  • Vienna
    Ungargasse 64-66/3/404
    1030 Wien, Austria

Parts of this content were created with the assistance of AI.