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Callstack Engineers

@callstackio
We ship cross-platform products at AI speed. Training LLMs (Apex). React Native Core Contributors & React Foundation Members. Bringing you @AgentConf.
Wroclaw, Poland
callstack.com
Joined August 2016
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    Callstack Engineers
    @callstackio
    Aug 19
    Give agents two migration tasks: 1. Preserve native behavior 2. Refactor into idiomatic React Native A different agent reviews between passes. The team compares both apps on devices and repeats the checks after refactoring. Download the guide: clstk.com/3So6LzM
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    Callstack Engineers
    @callstackio
    Aug 19
    Last night in Cambridge, around 80 people joined us for Agentic AI in the Wild with @Qodo Dev Community, @ReactVisionXR, and Codex Community Boston. Talks covered code quality, local validation, spatial computing, and large codebase migration. Thanks to everyone who came!
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    Callstack Engineers
    @callstackio
    Aug 18
    When we say @agent_device is token-efficient, this is what we mean. 4x cheaper per task at hand. "Tasks per dollar" advances to our new favorite metric.
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    Michał Pierzchała
    @thymikee
    Aug 18
    agent-device delivers more finished work for every dollar. Benchmarked on @swmansion’s AppControlBench with GPT-5.4-mini and Haiku 4.5: → ~4× more completed tasks/$ → 94.2–98.3% task completion → 2% faster with GPT-5.4-mini; 26% slower with Haiku 4.5 than alternative
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    Callstack Engineers
    @callstackio
    Aug 18
    See you tonight in Cambridge for Agentic AI in the Wild with @Qodo Dev Community, @ReactVisionXR , and Codex Community Boston. Doors open at 5:45 PM. On the schedule: 🔶 Oliver Edis on "Prompt to Portal: How AI Makes Spatial Computing Accessible" 🔶 Nnenna Ndukwe on "How to
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