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Perfomance & AI Day • Nov 27, 2025

AI is an Electric Bike for the Brain - Stoyan Stefanov

Stoyan Stefanov argues AI is an electric bike for developers, flawlessly accelerating prototyping and research. Find out why this performance expert outright refuses to ship AI-generated code to production.

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#1 about 6 min

Analyzing performance in automatically generated code

Evaluating the rendering and layout calculations of a font inspector created with an AI code generation tool.

#2 about 5 min

Navigating the stages of AI grief and adoption

How developers transition from initial denial and panic to embracing artificial intelligence for enhanced productivity.

#3 about 4 min

Integrating AI into web performance engineering workflows

Utilizing language models to rapidly create isolated test pages and generate research ideas without modifying production application behavior.

#4 about 3 min

Building greenfield projects with AI code generation

Accelerating exploratory development and feature implementation in a vanilla JavaScript music notation application.

#5 about 6 min

Exploring browser integration with the model context protocol

Allowing language models to directly analyze layout shifts and performance regressions within the development environment using standard testing protocols.

#6 about 5 min

Overcoming AI hallucinations and restrictive content guardrails

Why general language models temporarily struggle with accurate performance audits and how strict constraints motivate building custom infrastructure.

#7 about 6 min

Sourcing training data for predicting web page speeds

Extracting relevant performance metrics and tabular properties from the HTTP Archive dataset to evaluate real user experiences.

#8 about 6 min

Training a gradient boosting regression model in Python

Creating a decision tree that predicts targeted performance metrics by iteratively analyzing tabular feature splits.

#9 about 6 min

Evaluating page performance using customized ML prediction models

Applying a bespoke prediction model and game theory simulations to determine which code features impact page rendering times the most.

#10 about 3 min

Assessing the future of AI in web performance optimization

Why domain expertise remains essential for evaluating automated performance suggestions and manually curating machine learning training data.

Matching moments

5:16 min

Motivations for adopting AI to enhance developer productivity

1:55 min

Shifting developer workloads and realistic AI productivity gains

Chris Heilmann +2 · LIVE

2:46 min

Generating real-time website performance traces with AI

Suchitra Swain Suchitra Swain · World Congress 2026 Europe

4:28 min

Exploring artificial intelligence as a solution for web accessibility

Chris Heilmann +2 · LIVE

4:40 min

Using AI to rapidly prototype intuitive application features

Artur Ortega · A11y + AI

1:30 min

Accelerating coding workflows with AI code generation tools

Meta Atamel +1 · Coffee With Developers

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Upcoming sessions on this topic

Open session

World Congress 2026 North America

September 25, 2026 · 10:20–10:50

Stage 5

Physical AI: 5 Things You Can Build That Aren't Another Chatbot

Vini Senger

Senior Technical Evangelist for Startups

Vini Senger
Open session

World Congress 2026 North America

September 23, 2026 · 10:00–17:00

Stage 11

Building Stuff with GenAI - The Open Minded Workshop beyond OpenAI

Andreas Erben

CTO for Applied AI and Metaverse at daenet

Andreas Erben
Open session

World Congress 2026 North America

September 25, 2026 · 14:10–14:40

Stage 1

The Broken Rung: How AI is Rebuilding Software Development from the Ground Up

Tomislav Tipurić

Chief Technology Officer, Nephos

Tomislav Tipurić
Open session

World Congress 2026 North America

September 25, 2026 · 16:50–17:20

Stage 4

Engineering Moneyball: How We Benchmarked Google vs Meta

Jirka Bachel

Co-Founder & CEO

Jirka Bachel
Open session

World Congress 2026 North America

September 24, 2026 · 11:10–11:15

Outdoor Stage

Architecting the 100X SDLC: Building Production Trust into AI-Assisted Delivery

Ranjan Parthasarathy

Founder, CPTO/CEO at AXIOMSTUDIO.AI

Ranjan Parthasarathy
Open session

World Congress 2026 North America

September 25, 2026 · 11:00–11:30

Stage 3

Performance Engineering in the Age of AI

Frederic Branczyk

VP of Data Platforms at Dash0

Frederic Branczyk

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