Agent Conf | Warsaw 2026

Shaping the Future of Agentic Development
Powered by @callstackio 💜

[Agent Conf | Warsaw 2026 @reactuniverse_]

Hey everyone. For live Agent Conf 2026 updates follow @AgentConf.

#agentconf

https://t.co/9HsZkMOglu

[Agent Conf | Warsaw 2026 @reactuniverse_]

Callstack's coding model is live. Follow @apex__ai for live updates.

[Callstack Engineers @callstackio]

Announcing Apex: agentic coding model for mobile and web, specialized in React.

We built Apex from a single idea: can an open-weight model deliver frontier-level performance at lower cost?

Yes. Apex is SOTA in React Native and Next.js.

Try it now: https://t.co/nKbBxcmRFX

[Callstack Engineers @callstackio]

Join Callstack, @jetbrains & @expo for From Design to Shipped: A Modern App Development Meetup on October 22, 2026 at the JetBrains Amsterdam office. You’ll here from:

🔹 Michał Pierzchała (@thymikee): “From Design to Done in One Shot With a Cheap Model”
🔹 Craig Walker & Kasper Peulen (@KasperPeulen): “Agents Didn't Kill the UI Developer Workflow - They Changed It”
🔹 Cedric van Putten (@cedric_dev) from Expo

Doors open at 5:45 PM CEST. Free entry, pizza & drinks after the talks.

Sign up now: https://t.co/nvmcu6aMc9

[Rafael Mendiola @GroundControl]

For @AgentConf, I whipped up an @expo app that lets me do on device transcription, let's me take photos while it's recording, and creates summaries with Luna. It's the conference app that I've always wanted.

[Maciej Jastrzębski @mdj_dev]

Delighted to see @kentcdodds on stage again! This time at @AgentConf

[Agent Conf | Sept 17-18, 2026 | Warsaw @AgentConf]

Day 1 in a nutshell: 500 people, 16 speakers, and hectoliters of specialty coffee.

Thank you to @grabbou, @thymikee, @kentcdodds, @nickwm, @jakubkuzimski, @davidmokos_, @dom_sipowicz, @piotrkarwatka, @anisha_malde, Kourtney Meiss, Zuzanna Skoczylas, Anjaneya Sastry Kappagantu, @artus9033, @LeSiOO, @davidbudac, and @TejasKumar_ for guiding us through the day. Awesome work.

[Michał Pierzchała @thymikee]

Got this cool little print out from a selfie from @GroundControl and @watchful_toast ❤️

[Michał Pierzchała @thymikee]

Crazy! @javierwasserman already using Apex at prod in Orchestra

[Maciej Jastrzębski @mdj_dev]

From agent prompting, to parallel loops, to software factories by @thymikee at @AgentConf

[Thiago Brezinski @thiagobrez]

@thymikee from vibe coding to agentic engineering with @agent_device

[Thiago Brezinski @thiagobrez]

Agent Conf just getting started with @grabbou !

[Thiago Brezinski @thiagobrez]

Apex providing you UNLIMITED tokens during @AgentConf

Go crazy

[Agent Conf | Warsaw 2026 @reactuniverse_]

@o_kwasniewski @TesterArmy It’s @AgentConf this time, catch up ✌️

[Lech Kalinowski @LeSiOO]

See you at Agent Conf! @AgentConf @reactuniverse_ @callstackio

[Agent Conf | Warsaw 2026 @reactuniverse_]

@GroundControl @AgentConf says hi!

[Agent Conf | Warsaw 2026 @reactuniverse_]

It’s @AgentConf this time, y’all. Lock in for live updates.

[Rafael Mendiola @GroundControl]

On my way to Warsaw! 🇵🇱 for Agent Conf! @reactuniverse_

[Agent Conf | Warsaw 2026 @reactuniverse_]

Came early, caught the last bits of summer in Warsaw 🐐

[Rafael Mendiola @GroundControl]

In Warsaw for #agentconf @reactuniverse_ , with @mat_kornacki. I'm really excited for the lineup they have.

Make sure you're paying attention to Poland 🇵🇱 during this AI boom.

[Agent Conf | Sept 17-18, 2026 | Warsaw @AgentConf]

Give your AI coding agents a foundation to build on.

@OpenMercato is an open-source framework for building CRM and ERP applications, with authentication, permissions, business modules, and specs that give agents architectural context. Explore Open Mercato.

We’re excited to welcome Open Mercato as a Partner of Agent Conf! See you in Warsaw.

[Agent Conf | Sept 17-18, 2026 | Warsaw @AgentConf]

Lech Kalinowski (@LeSiOO) from Callstack is joining Agent Conf in Warsaw as a speaker. Together with Artur Morys-Magiera (@artus9033) he’ll present a case study of Apex and look at the impact of quantization on LLM performance.

Get your ticket: https://t.co/txBNB10Ilp

[Agent Conf | Sept 17-18, 2026 | Warsaw @AgentConf]

Artur Morys-Magiera (@artus9033) from Callstack is joining Agent Conf in Warsaw as a speaker.

Together with Lech Kalinowski (@LeSiOO), he’ll present a case study of Apex and look at the impact of quantization on LLM performance.

Get your ticket: https://t.co/txBNB10avR